NATURAL SCIENCES OF PHILADELPHIA. 147 



Fasciolaria distans, Lam. 



Common. This and young Busycons are favorite residences of 

 the larger Eiqoagurus. 



Fasciolaria gigantea, Kiener. 



Two specimens, from the beach, much worn and discolored 

 (slate), each over a foot long. 



Eanella caudata, Say, 

 Common. 



Murex spinicostata, Val. 



Not common (two or three specimens). 

 Strombus pugilis, Gm. 



Frequent. Of about a score of specimens examined, all were 

 much worn, and had evidently been transported from a distance. 



[Note. — I append to the foregoing list the names of a few air-breathers 

 that were collected. ] 



(Gasteropoda Pulmonata.) 

 Limaz, sp. 



Observed under decaying wood, &c., on Bogue Island. 



Helix albolabris, Say. 

 Helix thyroides, Say. 

 Helix multilineata, Say. 



These three species were obtained, the two first in large num- 

 bers, from the beach of Shackleford, but no one of them was seen 

 on Bogue Island. 



Helix postelliana, Bland. 



"Interesting on account of the localit3% neither this species nor 

 an}' other of the group to which it belongs having hitherto been 

 found here" (Bland, in epist). Very abundant on Bogue Island, 

 in moist grass, &c., about the edges of the marsh. 



Melampus bidentatus. 

 Melampus obliquus, Say. 



Rather common, on the beach, and dredged in shallow water 

 among marine plants. 



RADIATES. 



The few specimens that have been determined, out of a consi- 

 derable number collected, furnish the following names, mostly 



187L] 



