154 FASCIOLAEIA. 



labiosa, fig. 348, E. splendidula. A complete illustrated Mono- 

 graph of this genus of pretty shining little shells, consisting of 

 15 known species, is given in parts 52 and 53 of the Concholo- 

 gical Illustrations by the author. PI. xv. fig. 347, 348. 



EUOMPHALUS. J. Sowerby. Fam. Scalariens, Lam.— Descr. 

 Orbicvdar, planorbular spire, with three or four volutions, im- 

 bricated above ; smooth below ; aperture of a round polygonal 

 form; umbilicus large, penetrating to the apex of the shell. — 

 Obs. This genus of fossils very nearly resembles Delphinula* 

 The main difierence appears to be that the whorls do not increase 

 so rapidly in size in the former as in the latter. Fossil, in the 

 Carboniferous Limestone. PL xvi. fig. 350. 



EUTEOPLi. Humphrey. Gray's Synopsis, PhasianeUa, La- 

 marck. 



EXOG-YEA. Say. A genus of fossil bivalves described as 

 resembling Chama in shape and Ostrsea in structure, having but 

 one muscular impression in each valve. PI. xi, fig. 183. 



EXSEETED. Standing out, protruding. 



EXTEENAL. An external shell is one which contains the animal 

 and is not covered by the mantle. 



EAECIMEN. Troschel, 1847. Pupaeform species of Ctclo- 

 STOMA. Ex. C. tortum. Thesaurus Conchyliorum, PI. xxviii. 

 fig. 181, 182 : and our figure. PI. xxv. fig. 529. 



EASCLITED. (fascia, a band.) Banded or striped. Ex. Caro- 

 colla marginata, fig. 277. 



EASCICTJLATED. (From fasciculum.) A Little bunch of hairs 

 or bristles against each end of each valve, characterizes some 

 species of the genus Chiton, which are termed fasciculated 

 species. 



EASCIOLAEIA. Lamarck, 1801. Fam. Canalifera, Lam. Sipho- 

 nostomata, Bl. — Bescr. Elongated, fusiform, ventricose ; spire 

 conical, consisting of a few rounded or angulated whorls ; aper- 

 ture wide, terminating in a long straight open canal : columella 

 lip with several oblique folds, the lower of which is larger than 

 the rest ; operculum horny, pyriform. — Obs. This genus is known 

 from Eusus by the folds on the columella ; from Turbinella, by 



