282 DRYM^EUS, SOUTH AMERICAN. 



twisted in the middle ; peristome simple, unexpanded, the columellar 

 margin dilated basally, broadly spreading above. Alt. 30, diam. 

 11 mill. ; aperture 12? mill, long, 6 wide (P/V\). 



Province of Patas, Peru (Dr. Farris, in. Cuming coll.). 

 Bulimus clathratus PFR., P. Z. S., 1858, p. 258 ; Malak. Bl., 1859, 

 p. 47 ; Monogr., vi, p. 134. 



D. CONFUSUS (Keeve). PI. 45, fig. 32. 



Shell perforate, turrited-oblong, solid, longitudinally closely 

 wriukle-striate ; brown-tinted whitish. Spire long-conic, the apex a 

 little acute, marbled with corneous. Suture impressed, sub-crenu- 

 late. Whorls 5J, rapidly increasing, the upper ones rather flat, 

 last, whorl shorter than the spire, attenuated at base. Columella 

 receding, subplicate above. Aperture oval-oblong, dull fleshy 

 within ; peristome simple, thin, acute, the margins subparallel, col- 

 umellar margin dilated above, reflexed, overhanging. Alt. 28, 

 diam. 11 mill. ; aperture 13 mill, long (Pfr.}. 



Peru. 



Bulimus confusus REEVE, Conch. Icon., pi. 48, f. 316 (Nov. 

 1848). PFR., Mouogr., iii, p. 426 ; Conchyl. Cab., p. 220, pi. 61, f. 

 5, 6. (? Bulimus culmineus REEVE, Conch. Icon., pi. 54, f. 360, 

 according to Pfr.) 



Compared by Reeve with B. torallyi Orb. 

 D. MONACHUS (Pfeiffer). PL 51, figs. 22, 23. 



Shell narrowly perforate, oblong turrited, thin, striatulate, dia- 

 phanous, dull corneous. Spire convex-turrited, the apex rather 

 acute. Whorls 7%, scarcely convex, the last about three-sevenths 

 the total alt., the base little attenuated, rotund. Columella receding. 

 Aperture oblique, oblong-oval ; peristome simple, unexpanded, col- 

 umellar margin dilated and reflexed above. Alt. 31, diam. 11 2, 

 alt. of aperture 14J mill. (Pfr.). 



Moyobamba, Peru (Gueinzius). 



Bulimus monachus PFR., P. Z. S., 1856, p. 333 ; Monogr., iv, p. 

 504 ; Novit. Conch., p. 493, pi. 106, f. 9, 10. 



D. CANARIUS (' Philippi ' Pfeiffer). PI. 48, figs. 36, 37, 38. 



Shell subcompressed-umbilicate, subfusiform-elongate, rather solid, 

 very lightly striated, a little shining, whitish and streakedly varie- 

 gated with fleshy ; spire turrited, the apex acute ; suture shallow, 

 whitish. Whorls 8, a trifle convex, the last about two-fifths the 



