NATURAL SCIENCES OP PHILADELPHIA. 211 



EUMESOGRAMMUS SUB-BIFURCATUS GUI ex St. 



Pholis sub-bifurcatus Storer, Rep. 63 ; Syn. 118. 



Stichseus sub-bifurcatus Gill, Cat. 45. (Storer, Putnam, &c.j 



Hah. Massachusetts, Maine, Nova Scotia, &c, and Newfoundland. 



Especially distinguished from E. prsecisus by the absence of the abdominal 

 lines, and the continuance of the median lateral one to the base of the 

 caudal fin. 



Notes on SHELLS, with descriptions of new fossil Genera and Species. 



BY T. A. CONRAD. 



NOETIA, Gray. 



N. ponderosa, Say, occurs abundantly in the Post-Pliocene of the Southern 

 States, and lives on the southern coast of Florida. Specimens have lately 

 been received from Pensacola, and are in the cabinet of the Academy. It is 

 unknown in the Mioeene, the shell I referred to as a variety being a dis- 

 tinct species. 



TURRITELLA, Lam. 



T. prjECincta. Turrited, broad at base ; sides straight, a profoundly ele- 

 vated, thick, angular carina revolves at the summit of each volution, gradu- 

 ally disappearing at the fourth whorl ; carina slightly channelled above, and 

 having a single revolving line beneath near its junction with the whorls, 

 which have each three revolving lines, the inferior one most prominent. 

 Length 3| inches ; width of body whorl, independent of carina, inch. 



Locality. Dallas Co. ? Alabama. Eocene. 



This large species differs from T. Mortoni in having a larger and more ab- 

 ruptly elevated carina, larger and fewer revolving striae, &c. It is allied to 

 T. ro'ifera, Lam. The specimen described was loaned for the purpose by Mr. 

 R. P. Whitfield. Other specimens are in Barnum's Museum, N. Y. 



PROTOCARDIA, Beyrich. 



P. virginiana. Cordate, subtriangular, inequilateral, ventricose, thin ; ra- 

 diating lines minute ; anterior upper margin very oblique, slightly emarginate, 

 posterior side slightly produced, the margin obliquely truncated ; post-um- 

 bonal area densely tuberculated on closely arranged striae ; posterior cardinal 

 tooth small, tubercular. Height Ik inch ; length 1 2-5ths inch. 



Locality. Pamunkey River, Virginia. Mr. Ruffin. 



This species is smaller and proportionally longer than P. Nicolleti, with a 

 smaller umbo, &c. This is the third Eocene species of Protocardia found in 

 the United States. There are two species in the American Cretaceous rocks. 

 The genus did not survive the Eocene fauna. 



Ecphora 4-costata, Say. 

 Lister's figure 1059, fig. 2, represents a rare variety of this species, without 

 umbilicus. I found one such specimen. Dillwyn erroneously refers Lister's 

 figure to a variety of Buccinum scala. The shell is very peculiar in substance, 

 resembling horn. The umbilicus, though generally enormously large, is 

 sometimes moderate. The range of this species is from New Jersey to South 

 Carolina, inclusive. 



FASCIOLARIA, Lam. 

 F. subtenta. Fusiform ; volutions 7 ; body whorl ventricose, penultimate 

 subangulated, the others angular below the middle, tuberculato-costate ; 

 surface rugoso-striate ; lines alternate on the spire, irregular on the body 

 whorl, many of them thick and prominent ; minute, rugose, longitudinal lines 

 ornament the whorls; outer lip ribbed within, the ribs divided towards the 



1864.] 



