214 SIMPDLOPSIS. 



face dull, lusterless or with a somewhat silken sheen, nearly smooth, 

 but with some low and irregular wrinkles or folds, but more regularly 

 and more closely plicate on the penultimate whorl. Spire small and 

 short; whorls 3J, the last extremely large and inflated, well-rounded 

 throughout. Aperture very oblique, large, rounded, ovate ; peri- 

 stome thin and sharp, the outer lip usually with a cuticular and more 

 or less distorted edge ; columella long, concave, thin. 



Alt. 15, diam. 15, longest axis of aperture 14^; width 10J mill. 



Portas, Prov. Bahia, Brazil, on palms (Blanche!) ; Bahia (Acad. 

 coll.) 



Helix ( Cochlohydra] atrovirens MORIC., Mem. Soc. Phys. et d'Hist. 

 Nat. de Geneve, vii, p. 416, pi. 2, p. 1 (1835 or 1836). Vitrina 

 atrovirens JAY, Catal., 1839, p. 43. PFR. Monogr. ii, p, 511 

 Simpulopsis atrovirens Mor., BECK, Index Moll., p. 100 PFR., 

 Conchyl. Cab., p. 30, pi. 3, f. 5, 6 ; Monogr. iii, p. 7 ; v, p. 22. 



In general appearance this species resembles the corrugated forms, 

 but the folds are almost obsolete. A number of specimens before 

 me, including two from Moricand, show very little variation in 

 sculpture, and the species seems well founded. 



S. SULCULOSA (Ferussac). PI. 64, figs. 81, 82, 83. 



Shell globose-conic, higher than wide, excessively thin, pale 

 greenish-yellow, transparent, surface glossy, showing under a lens 

 numerous revolving dull and lustreless bands about as broad as the 

 glossy intervals ; irregularly sulcate or wrinkled, the wrinkles rather 

 widely and unevenly spaced, subobsolete on the spire. Spire conic 

 and elevated. Whorls ahout 4^, the last globose. Aperture ovate, 

 moderately oblique ; outer lip thin and acute; columellar lip thin, 

 concave. 



Alt. 11, diam. 9^, longest axis of aperture 8.3, width 6 mill. 



Prov. Sao Paulo, Brazil, at Itapetininga (v. Ihering) and Taguara 

 (v. Ihering, teste Clessin); Botafogo, near Rio Janeiro, among plants 

 in moist places (Paz and Martinez). 



Helix (Cochlohydra,} sulculosa FER., Prodr., p. 27; Hist., pi. 11 A, 

 f. 6 Succinea sulculosa Gray, Ann. of Philos., ix, 1825, p. 415 

 Vitrina sulculosa PFR., Symbolae, iii, p. 45 : Monogr., ii, p. 512. 

 Simpulopsis sulculosa BECK, Index, p. 100. CLESSIN, Mai. Bl. 



(n. F.), x, p. 168 PFR., Conchyl. Cab., p. 31, pi. 3, f. 7, 8 



HEYNEMANN, Malak. Blatt., xv, 1868, p. 110, pi. 5, f. 10 (dentition). 



