210 MANUAL OF THE MOLLUSCA. 
Animal provided with a retractile proboscis ; eye-pedicels con - 
nate with the tentacles ; margin of the mantle prolonged into a 
siphon, by which water is conyeyed into the branchial chamber ; 
gills one or two, comb-like, placed obliquely over the back. 
Species all marine. 
FAMILY I.—STROMBIDA. Wing-shells. 
Shell with an expanded lip, deeply notched near the canal. 
Operculum claw-shaped, serrated on the outer edge. 
Animal furnished with large eyes, placed on thick pedicels; 
tentacles slender, rising from the middle of the eye-pedicels. 
Foot narrow, ill-adapted for creeping. Lingual teeth single; 
uncini, three on each side. 
The strombs are carrion feeders, and, for molluscous animals, 
very active; they progress by a sort of leaping movement, turn- 
ing their heavy shell from side to side. ‘Their eyes are more 
perfect than those of the other gasteropods, or of many fishes. 
, a ZG 
FESO SSS 
Fig. 76. 
Stromsvs, L. Stromb. 
Litymology, strombos, a top. 
Type, 8. pugilis (Pl. IV., Fig. 1). 
Shell rather yentricose, tubercular or spiny; spire short; 
aperture long, with a short canal above and truncated below; 
outer lip expanded, lobed aboye, and sinuated near the notch of 
* Fig. 76. Strombus auris- Diane, L. (after Quoy and Gaimard), Amboyna. 7p, pro- 
boscis, between the eye-pedicels ; f, foot, folded up; 0, operculum; m, border of the 
Taantle; s, respiratory siphon. 
