62 



POPULAR CONCHOLOGY. 



sinus, the edge of which is callous ; outer lip smooth ; co- 

 lumella rather lengthened ; aperture linear ; scarcely any 

 canal. — 1 species. 



C. striatus is described by Mr. Hinds. 



Family 5. — MUR1CEA. 



The animals of this family have mostly a small foot, 

 without appendages ; the head is generally small, at no 

 time prolonged into a snout; the tentacula are, for the 

 most part, small, bearing the eyes about the middle ; the 

 proboscis is projecting; the tongue is only armed with 

 three rows of teeth. The shells are of a variety of forms, 

 but have always a notch or canal at the base of the aper- 

 ture. Most of them have an operculum, which is horny. 

 — Marine. 



Fusus. Brug. — Shell fusiform or spindle-shaped, the 

 canal and spire being both sometimes con- 

 siderably elongated ; left lip smooth, right 

 waved or toothed; operculum horny and 

 curved. Animal ample, its head flanked by 

 rather thick subulate tentacles, bearing the 

 eyes on bulgings on their outsides not very 

 far above their thickened bases, which inter- 

 nally are separated from each other by a 

 capital lobe ; proboscis long ; tongue armed 

 with transverse rows of teeth, each row com- 

 posed of a quadrate axile loop, flanked on each 

 side by a hamate or scythe-shaped lateral ; 

 mantle even-edged, siphon not very much 

 produced beyond the canal ; branchial plumes two, un- 

 equal ; foot large, oval, subtruncated in front, obtuse be- 

 hind, bearing the operculum on a very short rounded 



