ETSSOA. 265* 



sisting of species of Contts, having a rhomboidal or quadrilateral 

 form and a coronated spire. Ex. Conus nocturnus, fig. 459. 



EICINULA. Lamarck, 1812. '' Sistrum," Montfort, 1810, has 

 the priority. (Eesembling the seed-vessel of the Ricinus.) Fam.. 

 Piirpnrifera, Lam. Entomostomata, Bl. — Bescr. Sub-ovate, thick, 

 tuberculated ; spire short ; aperture narrow, terminating ante- 

 riorly in a short canal ; outer lip thickened, denticulated within, 

 digitated without ; columellar lip spread over a portion of the 

 body whorl, and granulated, — Obs. This interesting genus is 

 composed of some neat little shells allied to Purpura, from which 

 they are distiuguished by the finger-like branching of the outer 

 lip, and the granulations of the columella. More than 50 species 

 are described ia Eeeve's Monograph. R. Horrida, PI. xix. fig. 

 413. 



EiaHT. See Dexteal. 



EIMULA. Couthoy. Cemoeia, Leach. 



EIMULAEIA. Defrance. A genus consisting of a minute species 

 of Emarqinula, Auct. which has a fissure near the margin, but 

 not reaching it. E. Blainvihi, fig. 243. 



EIMTTLINA. D'Orbigny. A genus of microscopic Eoraminifera. 



EINGrlCULA. Deshayes. A genus founded on Auricula riugens 

 of Lamarck and several small fossils, resembling in some respects 

 Pedipes of Adanson ; they would belong to Tornatella, were it 

 not for the lips being thickened and marginated. PI. xxv. fig. 

 ^540, 541. A. ringens. 



EISELLA. Grray, 1840. Small, vertically depressed species of 

 TrochidsB, with flat undersides. Tr. Melanostomus. 



EISSOA. Ereminville. i^am. EUipsostomata, Bl. Melaniana, Lam. 

 — Bescr. Oblong, turrited, acuminated ; spire long, consisting 

 of numerous whorls ; aperture round or oval, pointed posteriorly, 

 dilated anteriorly; outer lip slightly thickened, emarginated, 

 operculum horny. — Obs. The Eissose are small white, marine 

 shells, considered by some authors as resembling Melanise, but 

 placed by Sowerby near the Scalariae. They are principally from 

 the shores of the Mediterranean, and are also very abundant on 



