DRYM^US, SOUTH AMERICAN. 251 



Helix (Coclilogena) lita FER., Prodr., p. 54, no. 403 (name only); 

 Voy. autour du Monde, execute sur les Corvettes de S. M. 1'Uranie 

 et la Physicienne, par M. Louis de Freycinet, Zool., p. 473, pi. 67, 

 f. 10, 11 (1824). ORB., Mag. de Zool., 1835, p. \\.-Bulimu8 lita 

 DESK, in Lara. An. s. Vert., viii, p. 247 ; in Fer., Histoire, p. 89, pi. 

 139, f. 6, 7. POT. & MICH., Galerie, i, p. 159, pi. 15, f. 23, 24. 

 ORB., Voy. Amer. Merid., p. 268. REEVE, Conch. Icon., pi. 39, f. 

 236. Not B. lita TROSCHEL, Archiv fur Naturg., 1849, i, p. 230, 

 pi. 4, f. 3 (jaw and teeth), and in Schomburgk, Reisen in Britisch 

 Guiana, iii, p. 547. 



Buliunis lituratus SPIX, Testacea Fluv. Bras., p. 7, pi. 7, f. 3. 



Bulimulus papyraceas var. latior Martens, STREBEL, Beitr. Mex. 

 Land- und Siissw.-Conch., v, p. 81, pi. 13, f. 7 ; pi. 14, f. 7 a-e ; pi. 

 16, f. 9, 10 (anatomy). 



Au abundant and variable species. The type locality of papyra- 

 ceus is Rio Janeiro. Figs. 1 , 3, are drawn from specimens collected 

 there (in the suburb San Domingo) by A. D. Brown. 



The locality of Ferussac's original Helix lita is not known. The 

 first description is of specimens collected at or near Rio Janeiro by 

 the naturalists of the Uraiiie and Physicienne ; and these are typical 

 papyraceus. 



B. lituratus Spix (pi. 51, fig. 2) from the Northern Provinces of 

 Brazil, is somewhat more boldly marked than the typical form, but 

 has the same slender contour, with narrow, straight columella. 



The locality Guiana, given by Drouet and Troschel, is based 

 upon specimens collected by Schomburgk. In my opinion, these 

 shells were either wrongly identified or else they did not really come 

 from Guiana. I have elsewhere commented upon the obvious over- 

 loading of the Guiana snail fauna for which Drouet is responsible. 



Von Martens briefly describes a variety, c, as larger, lengthened, 

 reminding one of B.prcetextus and effeminatus Rve., but more acu- 

 minate. Length 40, diam. 19, length of aperture 20 mill. It is 

 from Costa da Serra. 



According to Hidalgo, Paz obtained specimens at Rio Janeiro 

 corresponding with Reeve's figure o?"B. litus" (pi. 51, fig. 6). At 

 Bahia, Paz and Martinez collected specimens agreeing with Reeve's 

 figure of papyraceus (similar to pi. 51, fig. 3). 



Orbigny writes . This species divides into two quite distinct varie- 

 ties. The first [typical papyraceus], which is constantly elongated 



