SIMPULOPSIS.—Prate II. 
tenui, membranaced, rufescente-corned, spird convexd, 
anfractibus obliqué plicato-corrugatis, superné declivi- 
bus, versus basin subventricosis; apertura obliqua, 
lunari-ovata. 
‘THE GROOVED.Srmputopsis. Shell conically globose, 
thin, membranaceous, reddish horny, spire convex, 
whorls obliquely plicately wrinkled, sloping round the 
upper part, rather ventricose towards the base ; aper- 
ture oblique, lunar-ovate. 
Helie (Cochlohydra) sulculosa, Férussac, Prod. p. 14. 
Hist. p. lla. f. 6. 
Succinea sulculosa, Gray. 
Succinea membranacea, Michaud. 
Simpulopsis sulculosa, Beck. 
Vitrina sulculosa, Férussac. 
Hab. Brazil. 
This species, described by the elder Férussac, appears 
to have been the first known of the genus. It is of pre- 
cisely the same typical character as the large 8. Miersi of 
the same locality. 
Species 14. (Mus. Cuming.) 
SIMPULOPSIS OBTUSA. Simp. testa transverse™ ovati, 
Neriteformi, tenuissimd, flavicante-corned, valde pel- 
lucidd, subvitred, spird parva, laterali, anfractibus con- 
vevis, oblique validé creberrimé plicato-corrugatis ; 
apertura perobliqua, lunari-ovatd. 
THE oBTUSE SrtmpuLopsts. Shell transversely ovate, 
Nerite-shaped, very thin, pale yellowish-horny, very 
transparent, almost glassy, spire small, lateral, whorls 
convex, obliquely strongly very closely plicately 
wrinkled ; aperture very oblique, lunar-ovate. 
Succinea obtusa, Sowerby, Genera of Shells, No. 9. 
Helix (Cochlohydra) obtusa, Férussac. 
Helix Brasiliensis, Moricand. 
Simpulopsis obtusa, Beck. 
Vitrina obtusa, Pfeiffer. 
Vitrina Brasiliensis, Pfeiffer. 
Hab. Bahia, Brazil. 
Notwithstanding this shell is so exceedingly thin and 
transparent, it is strongly plicately wrinkled throughout. 
