DRYM.EUS, SOUTH AMERICAN. 253 



Helix polygramma MORIC., Mem. Soc. Phys. Hist. Nat. Geneve, 

 vii, p. 436, pi. 2, f. 12-14 (1836). Bulimus polygrammus DH. in 

 Lam., An. s. Vert., viii, p. 243. PFK., Monogr., ii, 106; iii, 424; 

 iv, 485 ; vi, 132. Bulimulus polygrammus BECK, Index, p. 64. 



A much reduced member of the D. papyraceus group, easily dis- 

 tinguished by its diminutive size, coarse whitish stride, with light 

 basal band and dark umbilicus, and the rather stout spire. The 

 apical sculpture is typical for Drymceus, but so minute that only a 

 high magnification reveals it. One specimen before me wants the 

 brown streaks and white basal zone, the opaque whitish stride stand- 

 ing on a corneous ground. The only figures published, those of 

 Moricand, are decidedly poor. 



D. CUTICULA (Pfeiffer). 



Shell perforate, ovate-fusiform, membranaceous, striatulate, 

 scarcely shining, diaphanous ; very pale corneous, dot-streaked with 

 brownish, and dotted with snow-white. Spire conic, rather obtuse; 

 suture minutely crenulated. Whorls 4J, a trifle convex, the last 

 forming three-fifths the total length, encircled below the middle by a 

 pale band, edged above with brown ; the base tapering. Columella 

 subplicate, receding; aperture little oblique, acuminate-oblong; 

 peristome simple, unexpanded, the columellar margin shining, re- 

 flexed. Alt. 28, diam. 13 mill.; aperture 19 mill, long, S wide 



Rio, Brazil (Cuming coll.). 



Bulimus cuticala PFR., P. Z. S., 1855, p. 95 ; Monogr., iv, p. 450 ; 

 Nomenclator Heliceorum Viventium, p. 232 (1878). 



Known to me by the above description only. Pfeiffer places it in 

 Plectostylus. 



D. MAGUS (Wagner). PI. 51, figs. 7, 8. 



Shell ovate conic, subventricose, thin but solid, shining, longitudi- 

 nally striated. Whorls 6, a little convex ; spire elevated, acute, 

 as long as the last whorl. Aperture ovate; lip simple, the left mar- 

 gin subreflexed, forming an extremely narrow umbilical chink ; 

 color buff, with wide, irregular, longitudinal brown streaks, the apex 

 pale flesh colored. Aperture white, painted with brown streaks. 

 Length 20, diam. 10 mill. (Spix- Wagner). 



Provinces Piauliy and Maragnan [Maranhao?] Brazil, in woods. 



Bulimus ivflatus SPIX, MS., not of Lamarck. Bulimus. magus 

 WAGNER, Testacea Fluv. Bras., p. 6, pi. 7, f. 1 (1827), 



