SIMPULOPSIS.—Puare I. 
This fine species, named in honour of its discoverer, Mr. 
Miers, the well-known naturalist and traveller in Brazil, 
may be regarded as the type of the genus. 
Species 5. (Fig. a, 6, Mus. Cuming.) 
SipuLopsis Cuminert. Simp. testd oblique oblonga, 
Neritaformi, tenue membranaced, olivaced, spird parva, 
laterali, vix emersd, anfractibus convexis, rudé irre- 
gulariter plicatis et malleatis ; apertura perobliqua, 
lunari-ovatd. 
Cumine’s Simputopsts. Shell obliquely oblong, Nerite- 
shaped, thinly membranaceous, olive, spire small, 
lateral, scarcely emerged, whorls convex, rudely irre- 
gularly plicated and malleated ; aperture very oblique, 
lunar-ovate. 
PreirFer, Pro. Zool. Soc. 1861, p. 27. pl. 3. f. 2. 
Hab. Mexico. 
Chiefly distinguished by its very oblique Nerite-like 
form; the substance of the shell being thoroughly mem- 
branaceous. 
Species 6. (Fig. a, 6, Mus. Cuming.) 
SimpuLopsts Porroricensts. Simp. testd perobliqué 
ovali, tenuissimd, flavicante-corned, spird conoided, 
modice emersd, anfractibus declivi-convenis, oblique 
confertim rudé striatis ; apertura oblongo-ovalt. 
Tue Porro Rico Simpunopsts. Shell very obliquely 
oval, very thin, pale yellowish-horny, spire conoid, 
moderately emerged, whorls slopingly convex, ob- 
liquely closely rudely striated; aperture oblong-oval. 
SHuTrLewortH, Diagn. Moll. No. 6. p. 147. 
Hab. Sierra de Luquillo, Porto Rico; Blauner. 
An extremely thin and delicately-tinted shell, very ob- 
liquely convoluted. 
Species 7. (Mus. Cuming.) 
SIMPULOPSIS HNEA. Simp. testé oblique ovatd, eneo-cor- 
ned, spird parva, apice acutd, anfractibus convexis, 
striis obliquis filiformibus minutis lineisque spiralibus 
impressis obscure decussatis ; apertura lunari-ovata. 
THE BRONZE StmruLopsis. Shell obliquely ovate, bronze 
horny, spire small, sharp at the apex, whorls convex, 
obscurely decussated with oblique minute thread- 
like strize and spiral impressed lines ; aperture lunar- 
ovate. 
Pretrrer, Pro. Zool. Soc. 1861, p. 27. 
Hab. Pavada, Mexico ; Salle. 
The sculpture of this species, which is scarcely: visible 
{o the naked eye, is composed of minute thread-like strice 
running obliquely, crossed by faintly-impressed lines run- 
ning spirally. 
