ORTHALICUS. 191 



O. MEOBAMBENSIS (PfeifFer). 



Shell ini perforate, ovate-conic, rather solid, closely striated, and 

 somewhat granulated by spiral striae; green-whitish, with interrupted 

 black bands combined with waved streaks, and above the middle 

 with large, angular, black spots. Spire conic, obtuse ; whorls 6^, a 

 little convex, the last five-eighths the total length, ventricose, some- 

 times bearing varices. Columella compressed, white-calloused, 

 straightened and receding. 



Aperture oblique, angulate-oval, pearly within, the peristome 

 black-margined, a trifle expanded, margins connected by a blackish- 

 chestnut callus. Alt. 88, diam. 46 mill ; aperture 55 mill, long, 33 

 wide (Pfr.). 



Moyobamba, Pern (Yates, in Cuming coll.) 



Bulimus meobambensis PFR., P. Z. S., 1855, p. 96 (printed July 

 23, 1855, see P. Z. S., 1893, p. 439) Bulimus gaUinasultana 3, 

 PFR., Monogr. iii, p. 381. Orthalicns meobambensis PFR., Monogr. 

 iv, p. 586. 0. moyobambensis, MART, in Albers' Die Hel., edit. 2, 

 p. 225. 



"Differs from 0. galllnasvhana in the oblong form, 'more solid 

 texture, more convex whorls and straight columella " (Pfr}. 



Pfeiffer, in the Monographia, places O.'tridlisatus as a synonym 

 under meobambensis. From the description, translated above, I would 

 think meobambensis identical with the upper Amazonian variety of 

 0. sultana. As I am unable to decide the question, the original de- 

 scriptions are given. 



O. TRULLISATUS Shuttleworth. PI. 47, figs. 9, 10, 11. 



Shell ovate-acuminate, rather thin, very closely rugose-striate, de- 

 cussated with remote impressed spiral lines and others very close, 

 granulose and somewhat undulating (fig. 10); scarcely shining, dull 

 greenish buff, encircled with five purple-black bands articulated with 

 Avhite, with scattered narrow brown streaks, broad, ragged, blackish- 

 purple blotches, and whitish spots. Spire conic, nuclear apex 

 banded with black-brown and pitted (fig. 9j; suture moderate ; 

 whorls 6^, a little convex, the upper ones purplish, conspicuously 

 streaked, the last nearly twice the length of the spire, rounded at 

 base. Columella a little straightened, callously thickened, black- 

 brown, obliquely subtruncate at base. Aperture a little oblique, 

 oblong-oval, opaque milky inside ; peristome somewhat duplicated. 



