268 TRANSACTIONS OF THE WAGNER FREE 



chie, Myakka River and Shell Creek beds of Florida; Post- Pliocene of the 

 Eastern United States and the Gulf coast; living from New Bedford, Mass., 

 southward to Jamaica, West Indies, eastward to Samana Bay, Santo Domingo, 

 and westward to San Antonio Bay, Texas. 



The variety attamata Dall has nearly the same distribution as the type, 

 except in the extreme North, and is found in the Chipola beds. It differs from 

 the type only in its smaller size and slightly more cylindrical form. The 

 differences which led H. C. Lea to separate his C. clavtdus from the recent 

 form are proper only to the young, and may be found in the young of the re- 

 cent specimens. 5. constricta, according to Meyer's observations, while other- 

 wise similar, has a different nucleus from the later forms. In the Eocene 

 fossil it is long and axially sculptured. In the 5. Adamsii it is smooth, flat- 

 sided and rather acute-conical ; in the closely allied 6". trilineata Phil, of the 

 Sicilian Pliocene, also recent in the Mediterranean, the nucleus is shorter and 

 more swollen and irregular than that of the S. Adamsii, while in the form 

 named trilineata from the Coralline Crag of Britain the nucleus is very short 

 and swollen and has but two whorls, the first smooth, the second axially 

 ribbed. It would appear, therefore, that we have to do with at least three 

 closely related but probably distinct forms from the Miocene and later, while 

 the Eocene form is quite distinct. Cerithiopsis quadristriaris Meyer and Al- 

 drich from the Eocene of Newton, Mississippi, seems to me distinct from 5. 

 constricta, though somewhat similar in sculpture. It has four threads, of 

 which the inner pair are smaller, and give the whorl a constricted look not 

 seen in Meyer's figure. It is also less cylindrical than S. Adamsii. 



There is no question as to the identity of 5". annulatum Emmons with 

 the recent S. Adamsii. Adams, when he found his specific name terebrale had 

 been preoccupied, suggested terebelbim, which was adopted by Stimpson and 

 Sowerby, but H. C. Lea's Adamsii is earlier by two years, his paper in the 

 Trans. Am. Phil. Society having (as we have discovered after much search) 

 been published early in 1845, though read in 1843. 



Genus CERITHIOPSIS Forbes and Hanley. 



Subgenus Eumeta Morcb. 

 Cerithiopsis (Eumeta) subulata Montagu. 

 Murex subulatiis Mont., Test. Brit. Suppl., p. 115, pi. xxx. fig. 6, 1808. 

 Cerith'mm puHC latum Philippi, non Linn6. 

 Cerithium Emersonii C. B. Adams, Bost. Journ. N. Hist. ii. p. 2S4, pi. iv. fig. 10, 1S38 ; 



Gould, Inv. Mass., p. 275, fig. 180, 1S41. 

 Cerithium bicostata Emmons, Geol. Rep. N. Car., p. 270, fig. 162, 1S58. 

 Triforis bicostatus Conrad, Cat. Mioc. Sb., Proc. Acad. Nat. Sci. Phila. 1863, p. 567. 

 Cerithiopsis subiitata Dall, Blake, Gastr., p. 252, pi. xx. fig. 4, 1889; Bull. U. S. Nat. Mus. 

 No. 37, p. 140, pi. 52, fig. I, 1889. 



Newer Miocene of North Carolina, Emmons ; Pliocene of the Caloosahat- 



