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POPULAR CONCHOLOOY. 



Eulima. Risso. — Shell small, beautifully polished, and 

 white ; slender in form, with many whorls, all level ; apex 

 acute, often twisted ; aperture oval, acute above ; 

 outer lip thickened internally, inner lip spread 

 out over the pillar ; operculum horny, spiral. 

 Animal, foot truncated in front; proboscis long, 

 retractile ; tentacula awl-shaped, close together, with 

 the eyes at the base. — 15 species (Sow.) ; also fossil. 



Beautiful little shells, generally white and po- 

 lished ; found on the shores of Britain, India, Aus- 

 tralia, and in the Mediterranean Sea. Forbes mentions 

 four as British; two are white, the others ornamented 

 with spiral brown lines ; he adds, " all the animals of this 

 genus creep, with the foot greatly in advance of the head, 

 which is almost concealed beneath the edges of the aper- 

 ture of the shell, the tentacula only protruding." 



Subulites. Conrad. — Shell awl-shaped; the whorls 

 broad; the suture oblique; the aperture unknown, pro- 

 bably like Terebra. — 1 species, fossil. 



Aclis. Loven. — Shell minute, like Turritella, striated 

 or smooth, spirally twisted; aperture oval, or 

 round ; outer lip prominent, inner without folds ; 

 an operculum. Animal, foot truncated in front ; 

 proboscis long and retractile ; tongue probably 

 unarmed; eyes at the base of the tentacula, 

 which are slightly swollen at the tips. — 4 

 species*; a few fossil, 



Very small shells, found on the shores of 

 England and Norway. 



Bjssoella. Gray. — Shell lengthened, oval, smooth, 

 and in appearance not differing from Bissoa, but the 



* Forbes' s British Moll. 



