28 BULIMULUS-SCUTALUS. 



This species is more elongated than B. cequatoriuts Pfr., with 

 smaller aperture. It is quite variable in degree of elongation and 

 in coloration, besides the five-banded form specimens occur of a uni- 

 form reddish tint, and others are buff with inconspicuous, narrow 

 brown streaks. Morelet describes a variety from Huanta which is 

 smaller, alt. 24, diam. 11 mill., buff, with five bands, the shell thin- 

 ner. Some small, thin, bandless examples are also before me. .The 

 dentition is normal for Bulimulus. 



B. BADIUS (Sowerby). PI. 4, fig. 49. 



Shell perforate, ovate-acute, rather solid, rugulose-striate ; tawny, 

 variegated with rufous interrupted bands and series of dots. Spire 

 conic, acute ; whorls 5, somewhat convex, the last about three- 

 fifths the entire alt. Columella nearly straight. Aperture oval, 

 whitish inside; peristome simple, acute, the columellar margin 

 dilated, vaulted, reflexed, half covering the perforation. 



Alt. 26, diam. 13 mill. ; aperture 15 mill, long, 8 wide. (P/r.). 

 Prov. Xagua, Peru (Matthews) ; Tarma (Jelski). 



Bulinus badius SOWB., P. Z. S., 1834, p. 141. Bulimus badius 

 PFR., Monogr., ii, p. 189. KEEVE, C. Icon., pi. 39, f. 235. LUB- 

 OMIRSKI, P. Z. S., 1879, p. 724.? Bulimus polymorphus var. A. 

 ORB., Voy., p. 289, pi. 41, f. 1, 2. 



The ventricose variety of d'Orbigny's B. polymorphus may prove 

 to be a badius, as Pfeiffer holds. It is figured on pi. 4, f. 48. 



B. POLYMORPHUS (d'Orbigny). PI. 5, figs. 46, 47. 



Shell oval or oblong, thick, substriate, subumbilicated. Gray- 

 white, with four interrupted purple-brown zones; spire subconic, 

 the apex obtuse; suture crenulated, nearly flat. Aperture oval; 

 lip thickened, whitish. Alt. 25, diam. 10 mill. (Orb.}. 



On the coast?, Peru (Fontaine). 



Helix polymorpha D'ORB., Mag. de Zool., 1835, p. 20. Bulimus 

 polymorphus D'ORB., Voy., p. 289, pi. 41, f. 3, 4, 5. 



The ventricose form mentioned and figured by d'Orbigny is 

 probably referable to B. badius. See pi. 4, f. 48. 



B. PROMETHUS (Crosse). PL 4, figs. 55, 56. 



Shell perforate, oblong-acute, rather thin, rugose-striate, dull 

 rose-white, encircled by interrupted chestnut bands. Spire conic, 

 the apex somewhat obtuse ; suture irregularly impressed, dentate. 

 Whorls 6, slightly convex, the embryonal 1? smooth, rose-whitish, 



