PLEKOCHEILUS-EURYTUS. 77 



flames of blackish ; spire acutely conic. Whorls 5, lightly convex, 

 last whorl about two-thirds the total length ; columella with a stout 

 oblique fold. Aperture oval, livid inside ; peristome thickened, 

 expanso-reflexed, the ends joined by a somewhat thick callus; colu- 

 mellar margin dilated, nearly closing the perforation. Alt. 58, 

 diam. 30 mill.; aperture, alt. 26, width inside 14 mill. (Sou'b.~). 



Bogota (coll. S. I. DaCosta). 



Bulimus (Eurytus) corticosus SOWB., Proc. Malac. Soc. London, 

 i, No. 5, p. 214, pi. 13, f. 2 (March, 1895). 



Compared with B. lamarckianus Pfr., the spire is much more con- 

 ical and the mouth smaller. The new species is further distin- 

 guished by its thickened columella fold. (Sowb.^). 



P. CARDINALIS Pfeiffer. PL 33, figs. 52, 53. 



Shell subperforate, compressed-ovate, solid, having growth-stria?, 

 and very close longitudinal, spiral and oblique impressed lines. 

 Olivaceous-chestnut, shining, with undulating reddish lines above, 

 and sparse blackish spots. Spire inflated-conic, rather obtuse; 

 whorls 4, convex, the last four-sevenths the length of shell, inflated, 

 subcompressed at base. Columella nearly vertical, subplicate above. 

 Aperture a little oblique, oval ; peristome lilac, the margins joined 

 by a moderately thick callus, right margin expanso-reflexed, col- 

 umellar margin dilated. 



Alt. 50, diam. 28; aperture measured inside, alt. 26, width 15 

 mill. (Pfr.\ 



Napo (Martinez), and Quito, Ecuador (Cuming coll.); Nanegal 

 (Orton, Wolf); Valley of Pilaton, 500-1000 meters alt. (Boetzkes). 



B. cardinalis PFR., P. Z. S., 1852, p. 58; Monogr., iii, p. 316; 

 Conchyl. Cab., p. 113, pi. 35, f. 7, 8. HIDALGO, Viaje al Pacifico, 

 p. 92. Eurytas cardinalis MILLER, Malak. BL, xxv, p. 182. 



According to Miller, this is one of the most abundant species of 

 Ecuador. It is notable for the thickness of the shell, strongly 

 thickened and recurved peristome, straight columella and heavy 

 callus. 



P. TETENSII Dunker. PI. 33, figs. 50, 51. 



Shell oblong-ovate, subglandiform, scarcely umbilicated, rather 

 thin, reddish, partly somewhat whitish, with some scattered pale 

 brown spots ; covered with a shining corneous yellowish epidermis. 



