CATALOGUE OF TliE SHELLS OF FLORIDA CALKINS. 249 



261. P. cuNNEiFOEMis, Say. 



No. 258 is the largest and most abundant species. Both coasts. 

 Family, Teredid^. 

 Genus, TEREDO, Adanson. 



262. T. NAVALis, L. Abundant everywhere. 



Genus, XYLOTRYA, Leach. 



263. X. riMBRiATA, Jeffreys. Found on vessels and old wood at Key 

 West. 



ADDENDA. 



REMARKS. 



Having received new material since the main part of the paper was 

 written, and all within the pist few weeks, I found myself obliged to 

 make an Addenda, or omit altogether a large number of interesting 

 species, which it seemed desirable to add to the Catalogue. For a por- 

 tion of these accessions I am indebted to Dr. James Lewis, of New 

 York, who thus put into my hands, many forms collected by the late Col- 

 Jewett. I desire again to thank Mr.Tryon, who has kindly compared my 

 specimens with others in the Academy of Natural Sciences of Philadel- 

 phia, and identified for me a number of species. I also decided to 

 incorporate in the paper a number of species, which, though not strictly 

 Marine, are, however, of such an organization that tlie vicinity of the 

 sea, with its direct influences, seems necessary to their existence. Some 

 of these, on account of their rarity, are but little known. Of the entire 

 list, I have collected myself two hundred and seventy-seven species. 

 The remainder I add on the authority of others, after careful investiga- 

 tion and correspondence with a number of Conchologists, to all of whom 

 I desire to express my thanks for aid, sympathy and consideration to a 

 degree unexpected by me. 



264. Anomalocardia Floridiana, Con. West coast. 



265. Modulus corrugatus, Stm. May be a young M. lenticidaris, 

 Ch. Loc, Cedar Keys. 



266. MuRBX MESSORius, Sowerhy. [M. trilineatus, Keeve.) Loc, the 

 Keys. Rare. 



267. MuREX BREYiFRONS, Lam. Cape Sable. Abundant. 



268. Trochus euglyptus, a. Ad. A distinctly marked species, as 

 heretofore only reported from Texas. Found by Dr. Yelis among the 

 Keys. 



269. Purpura lapillus, Say. East coast. 



270. Natica pusilla. Say. East coast. 



271. LiTHODOMUS LiTHOPHAGUS, L. Found imbedded in coral at 

 Tortugas. 



