42 STROPHOCHEILUS-DRYPTUS. 



Bulimus venezuelensis NYST, Bull, de 1'Acad. Roy. de Bruxelles, 

 xii, (1), p. 227, pi., figs, la, 16. (" B. venetiolensis " on plate), 1845. 



This species has been considered a synonym of marmoratus by 

 various authors, but having a good series of both species before me 

 I have satisfied myself that they are distinct. The microscopic 

 granulation of the surface is wholly irregular in this species, while 

 in marmoratus it shows more or less obvious arrangement into a 

 zigzag pattern. In the form, coarser sculpture, strong columellar 

 fold, etc., the two species are practically identical. 



The body-whorl is often almost free from Achatina-like striping, 

 and though usually of a rich reddish chestnut color, this is occasion- 

 ally replaced by a peculiarly pleasing olive-green. 



S. STUBELI Martens. PI. 20, figs. 42, 43, 44. 



Shell perforate, ovate-oblong, closely subgranulose, rugose-striate ; 

 pale chestnut, unicolored. Spire subconoid, apex worn ; whorls 4- 

 5, but little convex, the upper smooth, the last slightly more ventri- 

 cose. 



Aperture slightly over half the shell's length, subovate, livid in- 

 side : peristome thickened, narrowly reflexed, pale orange ; the ends 

 joined by a shining callus; outer margin lightly arcuate, columellar 

 margin rather widened, free, passing inward in a moderately distinct 

 fold. Alt. 60, diam. 32 ; aperture, alt. 34, width 24 including per- 

 istome ; measured inside, 29 x 18z mill. (Martens). 



Fusagasuga, New Granada, about 1700 meters alt. (Stiibel). 



Bulimus (Dryptus) stubeli MTS., Conch. Mittheil. ii, p. 172, pi. 

 32, f. 6, 7, 8. 



The striae are coarse, somewhat oblique and wrinkle-like, and 

 more or less distinctly, finely granulated, especially on the last 

 whorl. It is uniform yellowish-brown. The apex is lost in the unique 

 type, so that the number of whorls is not known exactly, but there 

 must be at least 4, and apparently a half or whole whorl more. The 

 upper one preserved is smooth, and evidently this is not entirely on 

 account of erosion ; there is none of the special sculpture visible on 

 it, such as is so characteristic of most Boms species. There are 2 

 or 3 granules in the distance across each wrinkle (see fig. 43). 



S. FUNCKI Nyst. PI. 18, figs. 34, 35. 



Shell oblong, solid, umbilicate or perforate ; uniform dark chest- 

 nut-brown or olive-brown, the spire reddish and often with some 



