288 Bulletin Vanderbilt Marine Museum, Vol. VII 



The species discussed have the following distribution : 



Chiton marquesanus Pilsbry, Anaho Bay, Nuka Hiva Island, 

 Marquesas Islands. 



Tonicia confossus (Gould), Vita Levu, Suva, Fiji Islands. 



Liolophura gaimardi de Blainville, Falcon Island, Palm Islands, 

 Queensland. 



HcUiotis naevosa Martyn, Temukus Roads, Bali, Dutch East 

 Indies. 



Platydoris cruenta (Quoy and Gaimard), Pago-Pago, Samoa. 



Si'phonaria gigas G. B. Sowerby, Cantodora Island, Pearl 

 Islands, Panama Bay. 



Nacella aenea Martyn var. magellanica Gould, Clotilde Island, 

 Chiloe Archipelago. 



Helcioniscus argentatu^ Sowerby, Hilo, Hawaii. 



Megalatractus aruxmu^ (Linne), Falcon Island, Palm Islands, 

 Queensland, Australia. 



Cyynhium fiammeum Bolten, Southport, Australia. 



Cymatium nodiferum (Lamarck), Casa Blanca, Morocco, Med- 

 iterranean Sea. 



Area (Navicula) avellana Lamarck, Teviatoa Reef, Raiatea 

 Island, Society Islands. 



Isognomon perna (Linne), Falcon Island, Palm Islands, 

 Queensland. 



Pteria (Electroma) electrina Reeve, Pago-Pago, Samoa. 



Pinctada margaritifera (Linne), Falcon Island, Queensland, 

 also Raiatea Island. 



Pecten jacobeus (Linne) , Venice, Italy, 33 fathoms. 



Pecten zealandiae Gray, Pago-Pago, Samoa. 



SpondyViis nicobaricus Chemnitz, Falcon Island, Palm Islands, 

 Queensland. 



Lima (Limaria) fragilis (Gmelin) , Falcon Island, Palm Islands, 

 Queensland. 



