BULIMULUS-SCUTALUS. 29 



the succeeding 1? roseate, unicolored, antepenultimate and penulti- 

 mate whorls with two interrupted chestnut bands ; the last whorl 

 about as long as spire (17 : 18), interruptedly four-banded. 



Aperture oblong-ovate, livid whitish inside ; peristome white, 

 the coluraellar margin nearly straight, dilated, nearly covering the 

 perforation, basal and outer margins somewhat thickened, not re- 

 flexed. Alt. 35, diam. 17 mill. ; aperture 17 mill, long, 9 wide. 

 (Crosse). 



Peru. 



Bulimus promethus CROSSE, Journ. de Conch., 1869, p. 423 ; 1871,. 

 p. 63, pi. 2, f. 3. 



This species seems to be allied to B. polymorphic Orb. 



B. FERRUGINEUS (Reeve). PI. 9, fig. 37. 



Shell perforate, ovate-conic, a little solid, rather smooth, striatu- 

 late ; white, ornamented with irregular rufous streaks and 3 or 4 

 interrupted basal bands. Spire conic, acute ; whorls 62, a little 

 convex, the last rounded, slightly shorter than the spire ; columella 

 very slightly arcuate. Aperture little oblique, oval ; peristome 

 simple, unexpanded, the right margin arcuate, columellar margin 

 vaultingly reflexed above, spreading. Alt. 19, diam. 9 mill. ; aper- 

 ture 9* mill, long, 6 wide. (P/V.). 



Peru (Cuming Coll.). 



Bulimus ferrugineus RYE., Conch. Icon., pi. 62, f. 424. PFR., 

 Monogr., iii, p. 416. 



B. PERISTOMATUS (Doering). Unfigured. 



Shell perforated, ovate-oblong, subfusiform, rather thin, densely 

 and irregularly rugose-striate, dull whitish. Spire oblong-conic, 

 suture frequently subcrenulate-margined. Whorls 6, slightly con- 

 vex, the first rugulose-striate, brownish, the last longer than the 

 spire, effuse in front. Columella obsoletely folded. Aperture sub- 

 vertical, ovate, yellow inside, shining ; peristome simple, expanded 

 throughout, the basal margin arcuate, columellar margin dilated, 

 terminations converging, joined by a thin callus. Alt. 27-29, diam. 

 11-13* mill. ; aperture, alt. 15-16, width 9-10 mill. (Doer.*). 



Sierra de Pocho, Argentina. 



Scutalus peristomatus DOER., Bol. Acad. Nac. Cien. Rep. Argent., 

 iii, p. 66 (1879). 



Smaller than B. stehneri, oblong, the peristome expanded 

 throughout and with converging terminations. Jaw with 8-10 rib- 

 lets. 



