GASTEROPODA. 2395 
FAMILY J.—NATICIDA. 
Shell globular, few-whorled; spire, small, obtuse; aperture 
semi-lunar; lip acute; pillar often callous. 
Fig. 94. Natica monilifera (Wilton). 
Animal with a long retractile proboscis ; lingual ribbon linear ; 
rachis 1 toothed; wncint 3 (as in Fig. 94); foot very large ; 
mantle-lobes largely developed, hiding more or less of the shell. 
Species all marine. 
NAticA (Adans.), Lamarck. 
Synonym, Mamilla, Schm. Cepatia, Gray. Nacca, Risso. 
Type, N. canrena, Pl. VIII, Fig. 1. 
Shell thick, smooth; inner lip callous; umbilicus large, with 
a spiral callus; epidermis thin, polished; operculum sub-spiral. 
Animal blind; tentacles connate 
with a head veil; front of the large 
foot provided with a fold (mentum), 
reflected uponand protecting the head; 
operculigerous lobe large, covering 
part of the shell ; jaws horny; lingual Fig. 95. Natica.* 
ribbon short; branchial plume single. 
The coloured markings of the naticee are very indestructible ; 
they are frequently preserved on fossils. The natice frequent 
sandy and gravelly bottoms, ranging from low water to 90 
fathoms (Forbes). They are carnivorous, feeding on the smaller 
bivalves (Gould), and are themselves devoured by the cod and 
haddock. Their eggs are agglutinated into a broad and short 
spiral band, very slightly attached, and resting free on the 
sands. 
Distribution, 197 species. Arctic seas, Britain, Mediterranean, 
Caspian, India, Australia, China, Panama, West Indies. 
Fossil, 260 species. Deyonfan—. South America, North 
America, Europe, India. ; 
Sub-genera. Naticopsis, M‘Coy. N. Phillipsii. Shell imper- 
forate; inner lip very thick, spreading; operculum shelly 
(British Museum). Carb. limestone, 7 species. 
* Fig. 95. Natica Alderi, Forbes, From an original drawing, communicated by 
Joshua Alder, Esq 
