PUPA. 



239 



Fig. 413. 



Plipa californica, Rowell. — Shell rimately subperforate, elongate 

 ovate, thin, dark hom-colored; with oblique rib-like strite ; apex obtuse ; 

 deep suture ; with five to six convex whirls, the last a little com- 

 pressed at the aperture ; aperture oblique, suborbicular, armed 

 with four white denticles ; one lamelliform, strongly developed, 

 slightly twisted, on the parietal wall, one on the columella, 

 and two deeply seated within or near the base of the aper- 

 ture ; peristome slightly expanded, columellar margin some- 

 what reflected. Long. 2J, diam. 1 mill. 



Pupa californica, Newcomb, Ann. N. Y. Lye. VII, 287. — 

 Bland, Ann. N. Y. Lye. VIII, 166, f. 12 (1865). 



San Francisco, California. 



ScBGENtJS LEIJCOCHILA, Alb. & Mart. 



Shell rimate, cylindrically ovate, apex rather obtuse ; rather 

 smooth, shining, pellucid ; whirls 6-Y, rather convex, aperture 

 semioval, edentulate or narrowed by folds, among which the 

 parietal is the strongest ; peristome thickened, reflected, its 

 external margin decidedly arcuate. Tentacles very distinct. 



Pupa fallax, Say. — Shellfusiform, regularly diminishing in volume 

 from the body-whirl to the apex, smooth ; epidermis brownish horn-color ; 

 whirls six, very convex, striae of growth hardly apparent ; 

 suture well impressed ; aperture lateral, rounded oval ; peri- Fig* ^l^* 

 stome white,- rather broadly reflected, lined within with white 

 callus, its right termination strongly curved ; umbilicus per- 

 forated. Length 5^, diam. 2-2^ ; aperture If mill long. 



Cyclostoma marginata, Sat, Journ. Acad. Nat. Sci. Phila. II, 

 172 (1821) ; Bixney's ed. 22. 



Bulimns margi}iaUis, Pfeiffek, Mai. Blatt. II, 94 ; Mon. Hel. 

 Viv. IV, 414.— W. G. Binney, Terr. Moll. IV, 136. 



Bulimus fallax, GocrLD, in Terr. Moll. II, 288, pi. lii, f. 1. 



Pupa fallax, Say, Journ. Acad. Nat. Sci. Philad. V, 121 



(1825) ; Binney's ed. 28.— Godld, Invertebrata, 192, f. 123 (1841), 

 excl. syn. placida; Bost. Journ. Nat. Hist. IV, 357, pi. xvi, f. 15 

 (1843).— DeKay, N. Y. Moll. 51, pi. xxxv, f. 331 (1843).— Pfeiffek, 

 Mon. Hel. Viv. II, 309 ; III, 333 ; in Chemnitz, ed. 2, 58, pi. xii, f. 

 20, 21 (1844). 



Pupa parraiana, D'Orbignt, Moll. Cuba, 181, pi. xii, f. 9-11 (1853). 



Pupa albilabris, Adams, Vermont MoUusca, p. 158 (1842) ; Silliman'a 

 Journ. [I], XL, 271. 



