ZOOLOGY. MOLLUSCA. 167 



Octopus chromatus, n. sp. 

 Argonauta. 



It seems to me likely that at least two forms of the argonaut 

 are found here Argonauta hians and A. Argo. Unfortunately 

 I am compelled to rely upon my memory alone for the de- 

 termination of these forms, and possibly I may be in error. 

 The animal or parts of the animal of the argonaut have been 

 several times captured on the Bermudian shores, and Mr. Bar- 

 tram, of Stock's Point, has a beautifully preserved specimen 

 of one of the species that was caught, I believe, some forty 

 years ago, or more. 



Spirula Peronii, Lam. 



The shell of this cephalopod is very abundant, and may be 

 found largely gathered in with the strewn Gulf-wrack which 

 in most places lines the coast. The shells are also found in 

 quantities, a half dozen or more, in the tidal rock-cavities, 

 whither they had been swept by the sea. 



GASTEROPODA.* 



Murex erosus, Brod. 



La Paz, Panama. 



Murex nuceus, Morch. 



This species was originally described from the Bermudas. 

 An identical form from Marco, west coast of the peninsula of 

 Florida, is in the collections of the Academy of Natural 

 Sciences of Philadelphia. 



Purpura deltoidea, Lam. 



Fla., Bahamas. 



Purpura haemastoma, L. 



var. P. undata, Lam. 

 P. bicostalis. 



Forida, W. Indies. 



* The localities mentioned indicate in a general way the range of the species. 1 



