242 DRYM^US, SOUTH AMERICAN. 



Group of D. koppeli. 



D. KOPPELI (Sowerby). Vol. XII, PI. 6, figs. 1, 2, 3, 4. 



Shell imperforate, ovate-conic, thin, shining ; fleshy-whitish or 

 buff straw-colored, generally with small black-brown spots promis- 

 cuously scattered over the surface ; the apex flesh colored. Spire 

 acutely conic ; whorls 6, a little convex, very lightly, irregularly 

 striated ; suture lightly impressed ; the last whorl rather swollen, 

 nearly half the length of shell, rounded at base. Aperture suboval, 

 slightly oblique, rather wide, whitish inside, showing the external 

 spots through ; peristome thin, rose-edged ; the lip terminations 

 joined by a very thin callus. Alt. 25, diam: 15 mill. (Sowb.). 



Bogota. 



Bulimulus koppeli SOWB., P. Z. S., 1892, p. 297, pi. 23, f. 9-12. 

 PACE, Proc. Malac. Soc. Lond., i, p. 230, f. viii, ix (genitalia), x 

 (teeth). 



Seems to be allied to D. gabbi Angas and D. tripictus Albers, of 

 Costa Rica. The anatomy is typical for the genus. Mr. Sowerby 

 writes : A pretty little shell, varying considerably in form and color, 

 but the lip appears to be always thin and prettily edged with red. 

 Of the two specimens lent me for description by Mr. DaCosta, one 

 is nearly white, profusely sprinkled with small brown spots, while 

 the other is of a yellowish straw color (more decided yellow towards 

 the apex), with only a few pale spots. I have as yet only seen very 

 few specimens, but these exhibit considerable variation in their 

 proportions. One apparently abnormally inflated specimen meas- 

 ures nearly 15 millimetres in width and only about 20 in length ; 

 while the narrowest specimen measures scarcely more than 11 milli- 

 metres in width to 21 in height. (Sowerby). 



Group of D. bivittatus. 



D. BIVITTATUS (Sowerby). PI. 28, figs. 11, 12. 



Shell pyramidally ovate, oblique towards the base, umbilicated ; 

 whorls 8 in number, smooth, peculiarly crenulated at the sutures. 

 Aperture obliquely ovate; lip and columella broadly reflected and 

 effused. White, last whorl faintly two-banded with chestnut (Rve.). 

 Alt. 29, diam. 16, alt. of aperture 15 mill, (from fig.). 



Brazil. 



