BULIMULUS-SCUTALUS. 31 



B. OCHRACEUS (Morelet). PI. 5, fig. 58. 



Shell perforate, oblong-oval, rather solid, rudely subgranulose- 

 ^triate, buffer brownish, unicolored, rarely obscurely banded. Spire 

 conic, the apex obtuse. Suture pale-edged. Whorls 5, little con- 

 vex, the last a little exceeding the spire, rotund at base. Columella 

 obliquely receding, whitish. Aperture oval, white or reddish-brown 

 inside ; peristome simple and unexpanded, the columellar margin 

 dilated and vaultingly reflexed. Alt. 37 to 40, diam. 17 to 18 mill. 

 {Morel.'). 



Sorai and Salcantai, Peru (Angrand). 



Bulimus ochraceus MORELET., Series Conch., iii, p. 176, pi. 7, f. 

 6 (1863). PFR., Monogr., vi, p. 127. Not Bulimulus ochraceus 

 BECK, Index Moll., p. 67 (a nude name). 



This species differs from its allies principally in the obtuse form 

 of the apex, as well as in having the number of whorls reduced to 

 5 or sometimes 4?. With the exception of the first whorl of the 

 spire, on which may be seen, under the lens, a sort of rudimentary 

 granulation, the entire shell is covered with quite prominent, un- 

 equal, close longitudinal striae, granulous in some places ; and with 

 a sufficient magnification feeble concentric impressions are visible 

 here and there, but no real transverse strise. 



The B. cotopaxiensis Pfr. is the nearest species, but may be dis- 

 tinguished by one or other of the following characters : B. ochraceus 

 is generally larger, with one whorl less ; the last whorl exceeds the 

 spire in length ; the columellar dilation is more pronounced, and 

 finally the surface of the shell shows only rare, and as it were acci- 

 dental granulations, instead of being the result of a regular decussa- 

 tion of striae as in B. cotopaxiensis. (Morel.}. 



B. COTOPAXIENSIS (Pfeiffer). PL 4, figs. 50, 51. 



Shell perforate, oblong-ovate, rather solid; striate and granulate- 

 decussate by spiral lines, disappearing below the middle of the body 

 whorl. White under a tawny-yellow, often brown -streaked or in- 

 terruptedly banded, cuticle. Spire convex-conic, the apex rather 

 obtuse. Whorls 6, little convex, the last as long as the spire, ro- 

 tund at base. Columella somewhat straightly receding. Aperture 

 little oblique, oval, white inside, shining ; peristome simple, obtuse, 

 unexpanded, the right margin lightly arcuate, columellar margin 

 dilated, white, vaultingly reflexed. Alt. 34, diam. 16 mill. ; aper- 

 ture 17 mill, long, 9? wide in the middle. (Pfr.~). 



