PSEUDOPEAS. 115 



West Africa and Congo Valley: P. saxatile, plebeium, 

 egens, pulchellum, scalariforme. 



Abyssinia: P. isseli. 



Comoro Is. : P. pusillum. 



Subgenus EREMOPEAS Pils., nov. Shell long, of 7 to 9 

 whorls, densely and evenly striate; protoeonch sculptured 

 with rather coarse, low, weakly nodose spirals. Viviparous, 

 bringing forth young of an oblong shape with about 2y 2 

 whorls. Type P. interior-is (Tate), Central Australia. 



N. E. Australia : P. tuckeri. 



1. P. CROSSEI (Girard). PI. 15, figs. 60, 61. 



Shell conic-turriculate, subperforate, thin, transparent, 

 somewhat shining, yellowish, ornamented with small, slightly 

 curved riblets, quite separated and regularly spaced. Spire 

 composed of 6 very convex whorls of regular increase, parted 

 by a deep suture; the embryonic 1^ whorls smooth, summit 

 obtuse. Last whorl rounded, slightly less than one-third the 

 total length. Aperture oval-rounded, slightly oblique; peris- 

 tome simple, acute, the margins joined by a very weak callus ; 

 columellar margin straight, reflexed, forming a very indis- 

 tinct angle with the basal margin; outer margin noticeably 

 arched forward. Length 4.5, diam. 2, aperture 1.5 x .8 mm. 

 (Girard}. 



Prince Island, que S. Joao at an elevation of 200 meters, 

 (F. Newton). 



Opeas crossei GIRARD, Jornal Sci. Math. Phys. e Nat. Acad. 

 Real Sci. Lisboa iii, 1893, p. 105, pi. 1, f. 13. 



Differs from Opeas pauper in shape and ornamentation. 

 The small number of whorls, deep sutures and ornamentation 

 cause me to refer this species to Pseudopeas, in the belief 

 that Girard overlooked the extremely minute sculpture of 

 the protoeonch. 



2. P. SAXATILE (Morelet). PI. 25, figs. 1, 2, 3, 4. 



"Shell perforate, turrited, finely costulate-striate, opaque, 

 a little shining, covered with a brownish-green epidermis. 

 Whorls 7, a trifle convex, the last slightly exceeding one-third 



