PACIFIC COA.ST SPECIES. 



157 



Fig. 140. 



A species of tbe California Region; California, near Oakland, Mon- 

 terey, San Bernardino, El Dorado County. 

 Animal unobserved. 



Pupa Californica, Rowell. 

 Shell rimately subperforate, elongate-ovate, thin, dark horn-colored; 

 with oblique rib-like striae; apex obtuse; deep suture; with 5 

 to G convex whorls, the last a little compressed at the aper- 

 ture; aperture oblique, suborbicular, armed with 4 white den- 

 ticles, 1 lamelliform, strongly developed, slightly twisted, on 

 the parietal wall, 1 on the columella, and 2 deeply seated within 

 or near the base of the aperture; peristome slightly expanded, 

 columellar margin somewhat reflected. Longitude, 2^;""" di- 

 ameter, 1""". 



Pwpa Californica, Newcomb, Ann. N. Y. Lyc.,vii, 287. — Blaxd, Auu. N. Y. Lyc.,viii, 

 166, fig. 12 (1865).— W. G. Bixney, L. & Fr.-W. Sh., i, 239, lig. 413(1869); 

 Terr. Moll., v, 262. 



Papilla Californica, Tryox, Aiuer. Jourii. Couch., iii, 304 (1868). 



San Francisco, Cal., and at Catalina Island, in the California Region. 

 It is also quoted from Colorado by Ingersoll, but I greatly doubt the 

 identity of his specimens. 



Animal unobserved. 



Family SUCCINID^. 



SUCCII\EA. (See below.) 

 Succiiiea Silliiiiani, Blais^d. 

 Shell oblong-ovate, thin, coarsely striate, shining, whitish (f ) ; spire 

 short, acute; whorls 3, convex; suture imjiressed; aperture oblique, 

 elongate-oval, angular above, effuse at the base; col- 

 umella slightly arcuate, with a thread-like thickening 

 above. Length 20, diameter 8i'""'; aperture, 13"'« 

 long, C™'" broad in middle. 



Fig. 141. 



S. SiUimaui. 



Succinea Sillimani, Bland, Ann. N. Y. Lye, viii, 167, fig. 13 

 (1865).— Tkyox, Am. Journ. Couch., ii, 236(1866).— W. G. 

 BiNNEY, Terr. Moll., v, 416. 



Humboldt Lake, Nevada, in Central Province; in the Pacific Prov- 

 ince at Stockton, Antioch, Mount Diablo, and iu San Benito Counly, 

 in California. 



The original description and figure are given above. 



Jaw as usual ; no anterior ribs. 



The lingual membrane (Terr. Moll., V, Plate X, Fig. I) has 24-1-24 

 teeth, of the type usual to the genus, 



