9G THE NAUTILUS. 



rank. Nevertheless, each appears to be clearly distinct from all the 

 others, and no species occur which cannot he at once referred to one 

 or another of them. Whether they may be recognized as genera is 

 mainly a question of personal opinion, hut it seems evident to me, as 

 I have intimated in several [daces, that the extreme forms, such as 

 Pterocera and Terebellum, to which the older authors have unan- 

 imously given generic rank, are in nature more closely allied to the 

 various types gathered into the old genus Strombus than the latter 

 are to each other. One more relationship should he pointed out, 

 namely, that apparently existing between groups G, H and J. It 

 remains for the paleontologist and anatomist to verify or correct de- 

 ductions based on the recent shells alone, and I await their final 

 judgment. 



SUPPLEMENTARY NOTES. 



Strombus goliath. — Ponderous and distorted specimens of gigas are 

 sometimes mistaken for this species, probably because Tryon remarks: 

 " perhaps a variety of S. gigas.'''' Not long since, I had the good 

 fortune to find a very fine example of the true goliath lying unknown 

 and unhonored in a collection once famous but forgotten. So com- 

 pletely does it differ from all its cousins that none need ever mistake 

 it. Through the munificence of Pres. Jesup, this king of Strombs is 

 now enthroned at last in the American Museum, New York City. 



Strombus costatus inermis Mr. Frederick Stearns reports '' 1 live 



mature shell" of this species from the Loo Choo Islands. Can a form 

 so commonly reported from the West Indies be also living in Orien- 

 tal waters ? Or has an error crept in ? 



Strombus corrugatus — I have been led to separate this (above) 

 from dentatus, and to consider elegaits a variety of it, judging by the 

 material at hand. A few other forms, usually considered varieties, 

 are restored to specific rank, merely as an expression of personal 

 opinion. 



Distribution : The Strombince occupy two great areas: An Ameri- 

 can, centering in the West Indies and spreading to Senegal, Brazil, 

 and West America ; and an Oriental, apparently centering in the 

 Philippines, reaching to Natal, the Red Sea, Japan, Hawaii and the 

 South Seas, and sending a single species (granulatus) into American 

 waters. Europe has no living forms, although rich in fossil ones. 



