This case presents an excellent example of the problems confronting a pleader in a federal court of limited jurisdiction, who is accustomed to preparing pleadings in a state court of general jurisdiction.

Appellant Fifty Associates and its lessee of Arizona real estate, Mayer-Central Building Company, executed a mortgage on certain property in Phoenix, to Prudential Insurance Company of America. After Mayer defaulted in making payments due to Prudential, the ap-pellee filed a foreclosure action in federal court. Jurisdiction purportedly was based on the diversity of citizenship provisions of Title 28 U.S.C. § 1332 . Prudential named as defendants the parties set forth in the margin. 1

Within the body of the complaint Prudential alleged with respect to diversity jurisdiction:

After considering the cause without a jury, the district court entered a “Judgment and Decree of Foreclosure and Sale” in favor of Prudential titled:

The district court noted that each of the defendants had been served regularly with process, that all defendants, except Fifty Associates and the State of Arizona (Arizona State Tax Commission), failed to answer the complaint or otherwise plead, and that defaults had been entered against all defendants, except Fifty Associates and the State of Arizona, 2 according to law.

A motion for summary judgment was made and granted. After entry of the foreclosure judgment, this appeal of Fifty Associates followed.

It is clear that the district court did not have jurisdiction. “A plaintiff suing in a federal court must show in his pleading, affirmatively and distinctly, the existence of whatever is essential to federal jurisdiction, and, if he does not do so, the court, on having the defect called to its attention or on discovering the same, must dismiss the case, unless the defect be corrected by amendment.” Smith v. McCullough, 270 U.S. 456, 459 , 46 S.Ct. 338, 339 , 70 L.Ed. 682 .

*1190 Federal courts being courts of limited jurisdiction, the presumption is that it is without jurisdiction unless the contrary affirmatively appears. Grace v. American Central Ins. Co., 109 U.S. 278 , 3 S.Ct. 207 , 27 L.Ed. 932 ; Robertson v. Cease, 97 U.S. 646, 649 , 24 L.Ed. 1057 .

Failure to make proper and complete allegations of diversity jurisdiction relegates a litigant to the jurisdictional purgatory described by Chief Justice Hughes in McNutt v. General Motors Acceptance Corp. of Indiana, 298 U.S. 178, 189 , 56 S.Ct. 780, 785 , 80 L.Ed. 1135 (1935);

Measured against Federal requirements that the existence of diversity jurisdiction must be sufficient on the face of the complaint, Prudential’s allegations appear to be infirm on a number of grounds.

First, although Prudential did allege that it had its principal place of business in New Jersey, the averment that “plaintiff is and was a New Jersey corporation and a citizen of the State of New Jersey” is plainly inadequate. An allegation that an individual is a citizen of a certain state is an allegation of fact. However, a corporation is a creature of statute and its citizenship can be established only by compliance with the statutes. It follows that an allegation that a corporation is a citizen of a certain state (without more) is not an allegation of fact, but a mere conclusion of law. For the purpose of federal jurisdiction, “a corporation shall be deemed a citizen of any State by which it has been incorporated and of the State where it has its principal place of business.” ( 28 U.S.C. § 1332 [c]).

Prudential alleges its principal place of business is in New Jersey— therefore, it is “deemed” to be a “citizen” of New Jersey, but that is not sufficient to establish diversity jurisdiction because there is no affirmative allegation as to the state in which it is incorporated. It could be incorporated in the State of Arizona, and be a citizen of New Jersey and a citizen of Arizona, thus destroying diversity between it and other citizens of Arizona as well as New Jersey. Similarly, the allegation about being a “New Jersey corporation” is also defective because it is a conclusion of law. The facts must be alleged from which it may be determined of which state, or states, the corporation is “deemed” to be a citizen —i. e. the state in which it was incorporated and the state in which it has its principal place of business.

Next, we find a complete absence of any allegations about the citizenships of Consolidated Roofing, Mayer Development Corporation, Mayer-Central Building Associates, Eric D. Mayer, Francine Mayer, Lawrence D. Mayer, and Pauline Mayer.

In compounding its errors, Prudential also failed to make proper allegations about the citizenship of each of the partners constituting Mayer-Central Building Associates. The citizenship of each member of an unincorporated association must be alleged, even though the entity might be recognized at state law as having the ability to sue and the liability to be sued. Great Southern Fire Proof Hotel Co. v. Jones, 177 U.S. 449 , 20 S.Ct. 690 , 44 L.Ed. 842 (1900). See also Underwood v. Maloney, 256 F.2d 334, 338 (C.A. 3 1958); United Steelworkers of America, A.F.L.-C.I.O. v. R. H. Bouligny, Inc., 382 U.S. 145 , 86 S.Ct. 272 , 15 L.Ed.2d 217 (1965). No attempt to comply with this rule was made by Prudential.

Perhaps in the belief that these numerous errors could be corrected in the district court by the use of fictitious “John Doe” defendants, Prudential re *1191 quested in its complaint that the true names of these defendants be inserted in the complaint when discovered.

In the federal courts “John Doe” casts no magical spell on a complaint otherwise lacking in diversity jurisdiction. There is no provision in the Federal Statutes or Federal Rules of Civil Procedure for use of fictitious parties. See Craig v. United States, 413 F.2d 854 (C.A. 9 1969); Roth v. Davis, 9 Cir., 231 F.2d 681 ; Molnar v. National Broadcasting Company, 9 Cir., 231 F.2d 684 .

In Molnar, supra, a California citizen plaintiff claimed diversity of citizenship between herself and the defendants — N. B.C. and ten Does. She specifically alleged that “defendants, and each of them, are citizens and residents of the State of Delaware.” Molnar’s complaint was dismissed by the trial court because it did not affirmatively appear that none of the Does was a citizen of California.

Affirming the dismissal, this court stated:

In the case at bar Prudential alleged that the “Does” and other fictitious defendants were names of defendants “unknown to plaintiff” and that none of them were citizens of New Jersey and none of them had their principal places of business in that state. Due to the ambiguous language employed by Prudential in the complaint, we are unable to determine whether Prudential meant to say that names of the defendants were not known or that the Doe defendants themselves were unknown.

By analogy with this court’s reasoning in Molnar, supra, if the identity of the Doe defendants were known so that Prudential could state that none of them were citizens of New Jersey, or had their principal places of business there, Prudential could also have stated the names of those defendants in the complaint. Likewise, if the identities of fictitious defendants were not known, then Prudential’s negative allegations about the citizenship of those parties are “mere guesswork”. The reason why the “Doe” practice could not be applicable to federal courts of limited jurisdiction is obvious.

The proper method of adding new parties in the federal courts is found in Rule 15 of the Federal Rules of Civil Procedure, with particular attention to Rule 15(c) concerning the relation back to the original pleading.

The possible remedy of remanding this case to the district court to enable Prudential to amend its complaint by making proper allegations of diversity jurisdiction, striking all references to fictitious defendants, identifying indispensable parties, and so forth, would appear not to be available because of a cardinal error committed by Prudential in making the State of Arizona a defendant in a diversity action.

This court stated in Arctic Maid v. Territory of Alaska, 297 F.2d 28, 31 (C.A. 9 1961) that “a suit between a state and a citizen of another state is not a suit between citizens of different states, since a state is not a ‘citizen’. (Citations) ” Arctic Maid is by no means the only decision to affirm the principle that neither a state nor a state agency could be a party to a diversity action. See Postal Telegraph Cable Co. v. Alabama, 155 U.S. 482 , 15 S.Ct. 192 , 39 L.Ed. 231 (1894); State Highway Comm. v. Utah Co., 278 U.S. 194 , 49 S.Ct. 104 , 73 L.Ed. 262 (1928); Broadwater-Missouri Water Users’ Ass’n. v. Montana Power Co., 139 F.2d 998 (C.A. 9 1944); Lowe v. Manhattan Beach City School District, 222 F.2d 258 (C.A. 9 1955); Miller v. County of Los Angeles, 341 F.2d 964 (C.A. 9 1965); DeLong Corp. v. Oregon State Highway Comm., 343 F.2d 911 (C.A. 9 1965); State of Alaska v. K & L Distributors, Inc., 318 F.2d 498 (C.A. 9 1963); Harris v. Penn. *1192 Turnpike Comm., 410 F.2d 1332 (C.A. 3 1969); Dacey v. Florida Bar, Inc., 414 F.2d 195 (C.A. 5 1969); Centraal Stikstof of Verkoopkantoor N. V. v. Alabama St. Docks Dept., 415 F.2d 452 (C.A. 5 1969); State of Nevada ex rel. Beko v. Reynolds Elec. & Engineering Co., 272 F.Supp. 942 (D.C.Nev.1967); Krisel v. Duran, 258 F.Supp. 845 (S.D.N.Y.1966); Fabrizio & Martin, Inc. v. Board of Ed. Cent. Sch. Dist. No. 2, 290 F.Supp. 945 (S.D.N.Y.1968).

Under the laws of the State of Arizona, the State Tax Commission is part of the government. Campbell v. Hunt, 18 Ariz. 442 , 162 P. 882 (1917); Brooks v. Kerby, 48 Ariz. 194 , 60 P.2d 1074 (1936). There is no doubt that the district court was correct in terming the Commission “an agency and department of the State of Arizona” in its foreclosure decree.

The fact that the Tax Commission purportedly waived its Eleventh Amendment privilege not to be subject to suit cannot create diversity.

In its present posture, the case at bar seems to be infected with an incurable weakness. However, if it can be demonstrated that the Tax Commission is not an indispensable party, as defined in Shields v. Barrow, 17 U.S. (How.) 130 , 15 L.Ed. 158 (1854), 3 and can be dismissed, 4 and if amendments consistent with this opinion can be made to establish diversity jurisdiction, then Prudential could renew its motion for a summary judgment on the merits. If diversity jurisdiction cannot thus be accomplished, the district court must dismiss the case. It may then be filed in the state court of general jurisdiction where it should have been filed originally-

The judgment of the district court is vacated and this case remanded for proceedings not inconsistent with this opinion.

. “The Prudential Insurance Company of America, Plaintiff v. Fifty Associates, a Massachusetts corporation; Mayer Central Building Corporation, an Arizona corporation; Walter E. Fulford and Dick Searles, co-trustees of the Estate of Mayer Central Building Corporation; Federated Mortgage Investors, a New York investment trust; John Doe One through Ten; Jane Doe One through Ten; Brown and Smith, a partnership; Black Corporations One through Ten, Defendants.”

. The District Court also stated:

. “Persons who not only have an interest in the controversy, but an interest of such a nature that a final decree cannot be made without either affecting that interest, or leaving the controversy in such a condition that its final determination may be wholly inconsistent with equity and good conscience.”

. Girardi v. Lipsett, Inc., 275 F.2d 492 , (C.A. 3 1960); Kerr v. Compagnie de Ultramar, 250 F.2d 860 (C.A. 2 1958); Barron and Holtzoff, Federal Practice and Procedure, Volume 1 § 26, p. 154.