240 MANUAL OF THE MOLLUSCA. 
EuLIMA, Risso, 1826. 5s 
Etymology, eulimia, ravenous hunger 
Synonym, Pasithea, Lea. 
Type, HK. polita. Pl. VIIL, Fig. 14. 
Shell small, white, and polished; slender, elongated with 
numerous level whorls; obscurely marked on one side by a 
series of periodic mouths, which form prominent ribs internally ; 
apex acute; aperture oval, pointed above; outer lip thickened 
internally ; inner lip reflected over the pillar; operculum 
horny, sub-spiral. 
Animal tentacles subulate, close, with the eyes immersed at 
their posterior bases; proboscis long, retractile; foot truncated 
in front, mentum bilobed; operculum lobe winged on each 
side; branchial plume single; mantle with a rudimentary 
siphonal fold. 
The eulimee creep with the foot much in advance of the head, 
which is usually concealed within the aperture, the tentacles 
only protruding. (Forbes.) 
Distribution, 49 species. Britain, Mediterranean, India, 
Australia, Pacific. In 5—90 fathoms water. 
Fossil, 40 species. Carb.?—. Britain, France, &c. 
Sub-genus. Niso, Risso (= Bonellia, Deshayes). N. tere- 
bellatus, Lam. species. Axis perforated. 
Fossil, 3 species. Hocene—. Paris. 
Distribution, 5 species. China, West America. (Cuming.) 
MoNopPrTicMA, Lea. 
Synonyms, Melanioides, Lea = M. striata, Gray (name only). 
Shell like Chemnitzia, rather fusiform, spirally grooved ; 
columella slightly folded, with a sinus at the base. 
Distribution, 12 species. Indo-Pacific. 
Menestho, Moller (Turbo albulus, Fabr. Greenland) y. 
Chemnitzia. 
Acuis, Lovén. 
EL ymology, A, without, kleis, a projection. 
Synonym, Alyania, Leach (not Risso). 
Type, A. supranitida. Wood. A. ascaris, Turt. Pl. IX., 
Fig. 4. 
Shell minute, like turritella ; spirally striated ; aperture oval ; 
outer lip prominent; axis slightly rimate; operculate; apex 
sinistral. 
