BULIMULUS-SOUTH AMERICAN. 69^ 



a trifle expanded, with more or less general expansion basally; 

 columella oblique, nearly straight, the columellar lip very broadly 

 revolute around the capacious umbilical cavity, and faintly flesh- 

 tiuted. 



Ait. 24*, diam. 12; alt. of aperture Hi mill. 



Alt. 23f, diam. 10* ; alt. of aperture 11 mill. 



Corumba, Prov. Matto Grosso, Brazil (H. H. Smith). 



Bulimus amcenus Bonnet, Rev. et Mag. de Zool., 1864, p. 70, pi. 

 6, f. 2. Not Bulimus amcenus Pfr. Bulimulus connnbaensis PILS- 

 BRY, Proc. Acad. Nat. Sci. Phila., 1897, p. 19 (Feb. 23). 



The locality given by Bonnet for this species is incorrect, like 

 most of those recorded for the species described in his paper. It 

 occurs at Corumba, where Mr. Herbert H. Smith found it common 

 on walls, etc. B. corumbaensis is closely allied to the typical form 

 of B. sporadicus Orb., but it is a less elongated shell, solid, with 

 distinctly expanded peristome and very widely dilated columellar 

 lip, the umbilicus much larger than in sporadicus. The striped 

 color-pattern is a conspicuous but variable character. Bonnet's 

 figures are copied on pi. 14, figs. 7, 8. 



B. VESICALIS (Pfeiffer). PI. 12, figs. 42, 42. 



Shell subperforate, ventricose ovate, tapering toward each end, 

 thin, pellucid, striatulate; pale corneous above. Spire somewhat 

 concavely conic, the apex rather acute, whorls 62, a little convex, 

 the last whitish, as long as the spire, more swollen, columella 

 slightly receding. Aperture little oblique, oblong-oval, pearly 

 within ; peristome simple, unexpanded, acute, the columellar margin 

 vitreous, vaulted, reflexed. Alt. 25, diam. 13 mill. ; aperture 14 

 mill, long, 7 wide. (Pfr.). 



Brazil (Coll. Gruner). 



Bulimia vesicalis PFR., Zeitschr. f. Mai., March, 1853, p. 58; 

 Conchyl. Cab. p. 261, pi. 70, f. 23, 24; Monographia iii, p. 654; 

 viii, p. 146. Not B. vesicalis Gld., Oct. 1853. 



Var. uruguayamts Pilsbry, n. var. PI. 12, figs. 38, 39. 



Shell perforate, ovate or oblong with rather short, conic spire ; 

 thin but moderately solid, corneous-brown or dirty white, adults 

 being usually denuded of the thin cuticle. Surface shining in the 

 young, but nearly lusterless when adult, having irregular growth- 

 wrinkles often quite prominent on the back of last whorl. Spire 



