240 MARINE SHELLS 



An inhabitant of our estuaries of the middle and 

 southern states. I have found them on the Eastern 

 shore of Maryland, and upon the coast of Carolina, 

 Georgia and Florida; and my brother obtained a 

 specimen on the coast of New Jersey, of the length 

 of one inch and one-tenth nearly. Mr. Cuvier would 

 place this shell in the genus Paludiua. 



2. T. *canaliculatus. Shell thin globular, with 

 about four volutions ; body whirl with four profound 

 striated grooves, and several smaller ones near the 

 base and suture ; suture profoundly indented ; colour 

 pale reddish-brown, immaculate. 



Length about one-tenth of an inch. 



Inhabits the southern coast. 



Animal— -foot shorter than the shell, oval ; tenta- 

 cula rather robust, filiform, half as long as the foot ; 

 eyes at the external base of the tentacula. 



I have obtained but a single individual of this spe- 

 cies. If it is only an immature specimen, we know 

 nothing of the parent of it. 



3. T. *palliatus. Shell suboval, not remarkably 

 thickened ; whirls four or five, wrinkled transverse- 

 ly ; spire short, convex, obtuse, much shorter than 

 the aperture ; suture moderately indented. 



Length about one-third of an inch. 

 Greatest breadth about the same. 

 Inhabits the shores of the New England states. 

 Cabinets of Mr. Aaron Stone, Mr. Wm. Hyde 

 and my own. 



