Call, E. E., 1884, On the Quaternary and Recent Mollusca of 

 the Great Basin; Bull. U. S. Geol. Sur. 11, 66 pp., 6P1. 



Conrad, T. A., 1855, Description of a new Species of Melania; 

 Proc. Phila. Acad. Nat. Sci. VII, 269. 

 (M. exigua=P. protea Gld.) 



Cooper, J. G., 1870, The West Coast Freshwater Univalves, 

 No. 1; Proc. Cal. Acad. Sci. (1) IV, 93-101. 



-1871, On Shells of the West Slope or North America, No. 

 1 ; loc. cit., 150-6. 



, 1872, the same, No. 11 ; loc. cit. 171-5. 



-, 1873, the same, No. Ill ; Proc. Cal. Acad. Sci., VI, 11-27. 



1892, Catalogue of the Land and Fresh-Water Mollusca 



of Lower California; Zoe, 111, 12-25. 

 (Scattered records from the collections of Cooper, Hemp- 

 hill, and others in each of these.) 



Dall, W. II., 1897, Report on the Molluscs collected by the 

 International Boundary Commission, etc.; Proc. U. S. Nat. 

 Mus. XIX, No. 1111, 3*33-379, PL XXXI-XXXIII. 

 (A number of records chiefly from east of the Cuyamaca 

 Mountains. I 



— ■ — , 1905, Land and Freshwater Mollusks of Alaska and ad- 

 joining Regions; Harriman Alaska Expedition, XIII, 171 pp., 

 2 PL, and numerous figures. 



(Contains one of the best general treatments of the North 

 American freshwater molluscs.") 



1908, Notes on Gonidea angulata Lea, a fresh-water 



Bivalve with Description of a new Variety; Smith. Misc. 

 Coll., L, 499-500. 



Gould, A. A., 1855, Descriptions of (American Shells) ; Proc. 

 Bos. Soc. Nat. Hist. V, 126-30 ; 228 ; Otia Conchologica, 1862, 

 215ff. 



(Preliminary notices of the new species collected by the 

 Pacific R.R, Survey.) 



, 1856, Catalogue of recent Shells with Descriptions of the 



new Species; Rpt. Pac. R.R. Sur., V. 330-6, PI. XL 

 (The above descriptions repeated with figures.) 



Hanks, LI. G., 1882, Mud-volcanoes and the Colorado Desert; 

 Ann. Rpt, State Min. Cal., II, p. 227-40. 



Hannibal, H., 1910, Shells of Lakes and Streams; in Keep, W. 

 Coast Shells, (2 ed.) ; Dec 1910, 229-318, 3 PL 

 (Includes figures of most of the southern California forms.) 



Henderson, J., 1910, (Lymnaea bulimoides techella in San Ber- 

 nardino County, California) ; Naut, XXIII, 144. 



Keep, J., 1888, West Coast Shells, 230 pp. 1 PL 



, 1904, West American Shells, 360 pp. 1P1. 



(Familiar descriptions of several southern California species, 

 in some instances the names have been subsequently 

 changed.) 



44 



