DRYM^US, SOUTH AMERICAN. 275 



ate, showing traces of minute spiral impressed stria; in places. Alt 

 30*, diam. 12* ; alt. of aperture 14 mill. 



Peru : Truxillo, with B. pulchellus (Cuming) ; Chocquequirao 

 (Augrand). 



Bulinus varians BROD., P. Z. 8., 1832, p. 107. SOWB., Conch. 

 Illustr., f. 20, 20.* Bulimus varians ORB., Voy. Amer. Merid., p. 

 284. DESH. in Lam., An. s. Vert., viii, p. 266. REEVE, Conch. 

 Icon., pi. 18, f. 1046. MOREL., Ser. Conch., iii, p. 208. 



Differs strikingly from D. vexillumiu coloration, but is considered 

 by Pfeiffer to be a variety of that species. 



Var. RUBELLUS (Broderip). PI. 48, fig. 35. 



Shell thin, diaphanous, somewhat pyramidal, pale red, obscurely 

 maculose with whitish ; whorls 7, longitudinally striated ; umbilicus 

 inoderate. Alt. 11, diam. T 5 z inch. (Brod.}. 



Tnixillo, Peru (Cuming). 



Bulinus rubellus BROD., P. Z. S., 1832, p. 124. SOWB.> Conch. 

 Illustr., f. 32. Bulimus rubellus DH. in Lam., viii, p. 268. Bul- 

 imus varians REEVE, C. Icon., pi. 18, f. 104a. 



There is often a chestnut band around the perforation, as in the 

 other forms of the species. A specimen before me is longitudinally 

 streaked with faint scarlet and white, and measures, alt. 29, diam. 11, 

 alt. of aperture 13 mill., being more slender than the types. 



D. TIGRIS (Broderip). PI. 48, fig. 30. 



Shell subperforate, ovate-fusiform, thin, shining, longitudinally 

 plicatulate; tawny-white, narrowly and closely streaked with chest- 

 nut. Spire turrited, the apex acute, pale ; whorls 7, flattened, the 

 last about three-sevenths the length, tapering at base; columella 

 nearly straight. Aperture oval-oblong ; peristome acute, the right 

 margin unexpanded, columellar margin dilated above, triangular, 

 subappressed. Alt. 37, diam. 13 mill. ; aperture 19 mill. long. 



Cflfr.). 



Truxillo, Peru (Cuming). 



Bulimus tigru BROD., P. Z. S., 1832, p. 107.-- SOWB., Conch. Illustr. 

 f. 21. Bulimus trigris PFR., Monogr., ii, p. 204 ; iii, p. 427 ; iv, p. 489; 

 vi, p. 136. REEVE, Conch. Icon., pi. 18, f. 107. 



" Though approximating very closely, to the B. varians, there is a 

 sufficient variation in the form of this species to render it distinct. 



