Lea. I.. 1852, Descriptions of new Species of the Family 

 Unionidae; Trans. Am. Phil. Soc. X, 253-94, PI. XII-XXIX. 

 (Anodonta Californiensis — A. cygnea impura Say. I 



— , 1864, Descriptions of twenty-four new Species of Physa 

 of the United States and Canada; Proc. Phila. Acad. Sci., 

 XVI, 114-6; New Unionidae, Melanidae, etc.; .lout-. Phila. 

 Aead. Sci. VI. 113-187, PL XXII-IV. 

 (Physa Traski^P. fontinalis acuta.) 



Lewis. J., 1875; (Anodonta dejecta nov.) ; Field and Forest, 

 I. 2(3; in Yarrow, Mon. U. S. Geog. Sur. \V. 100 Mer., V, 952. 



Orciitt. ('. R., 181)0, The Colorado Desert; Ann. Rpt. State .Min. 

 CaL, X, 899-91!). 



- 1890, The Colorado Desert; West Am. Sci. VII. 55. 



-. 1890, West American Notes, Naut, IV, 67-8. 



(Physa at Ilanlon's Ferry.) 



1901, The Colorado Desert; West Am. Sci., XII, in 



no. 102 



Pilsbry, II. A., 1896, Limnaea bulimoides Lea resisting drought; 

 Naut. X. 96. 



-, 1899, Catalogue of the Amnicolidae of the western United 



States ; Naut. XII, 121-7. 



Pilsbry, H. A., and Ferriss, J. II., 1906, Mollusea of the South- 

 western States, II; Proc. Phila. Acad. Nat, Sci., LVIII, 1906, 

 123-75, PL V-IX. 



-, 1910, the same, III, The Huachuca Mountains, Arizona; 



Proc. Phila. Acad. Nat. Sci. LXI, 405-51(1, PI. XIX-XXII. 



— , 1910, the same, IV, The Chiricahua Mountains, Arixona; 

 Proc. Phila. Acad. Nat. Sci., LXII, 44-174, PI. I-XIV. 

 (Some of the most important recent papers on the Arizona 

 region.) 



Simpson, C. T., 189:-{, A new Anodonta; Naut., VI. 134-5. 

 (A. mearnsiana : A. dejecta Lewis.) 



1894, Types of Anodonta dejecta rediscovered; Naut. 



VIII, 52-3. 



- 1897, (Unionidae) in Dall, Rpt, Moll. Int. I'.nd. Comm. 



etc.; Proc. U. S. Nat. Mus. XIX. 1897, :570-:}. 



— , 1900, Synopsis of the Naiades or Pearly Fresh-water 



Mussels; Proc. U. S. Xat. Mus. XXII, 501-1044, PI. XVIII. 

 Smith, M., 1907, Annotated List of the Mollusea found in the 



vicinity of La Jolla, San Diego Co., CaL; Naut. XXI. 55. 

 Stearns. R. F. C, 1879, Remarks on Fossil Shells from the 



Colorado Desert; Am. Nat. XIII, 141-54. 



— , 1881, Observations on Planorbis, etc; Proc. Phila. Acad. 



Xat. Sci.. 1881, 92-1K), numerous figures. 



