310 [October, 1S43. 



size towards the umbilicus which is profound ; labrum with a series of minute 

 short prominent irregular lines on the inner submargin ; tooth at base of colum- 

 ella small, transverse, somewhat compressed ; beneath is a smaller pyramidal 

 tooth ; aperture round, more than half the length of the shell. Width nearly 

 half inch. 



Ecphora, (Conrad.) 



Shell fusiform, ventricose, with revolving coste ; aperture oval, suddenly con- 

 tracted towards the base or in the beak, which is reflected ; labrum united with 

 the labium above ; labium reflected ; margins of the beak so elevated as to form 

 a profound very oblique channel towards the base of the shell. 



Fusus 4-costatus, Say, Journ. A. INT. S. vol. iv. 



Kellia, 



K. mactroides. (Lepton mactroides.) Fossil shells of Tertiary formations, 

 p. 19.pl. x. fig. 5. 



K.fabagella. Amer. Marine Conch, pi. 11 fig. 3. 



ASOMIA. 



X.jugosa. Ventricose, subalated, with concentric waved lines of growth ; 

 ribs irregular, broad, rounded, distant, and some of them with remote, thick, 

 slightly prominent scales. Height one and a quarter inches. 



An Eocene species from the white limestone of S. Carolina, collected by 

 Edmund Ruffin, Esq. From Mr. Tuomey. 



ECHINODERMATA. 

 Echinus. 



E. irnprocerus. Depressed or discoidal, anus suboval; 5 v-form granulated 

 lines diverge from the anus, about 6 tubercles on each single line ; between 

 these 2 shorter tuberculated lines; interstices wide and without lines or tuber- 

 cles ; whole surface minutely granulated; periphery profoundly tuberculated, 

 the tubercles subequal ; on the base the tubercles are smaller and numerous. 

 Diameter half inch. 



Locality. James' river, near Smithfield, Virginia. 



E. philanthropus. Depressed-hemispherical, with closely arranged series of 

 mammillated radii, about 14 mammillae on each series of the larger radii ; in- 

 terstices crowded with unequal small tubercles ; at the sutures is a series of 

 unequally arranged minute pores. Diameter three quarters of an inch. 



Locality. Found with the preceding species. 



ADDENDA. 

 Venus. 

 V. cribraria. Subtrigonal, slightly ventricose, with about 25 concentric 

 elevated recurved lammelliform ribs, on the inferior side of which are elevated 

 transverse lines ; lunule cordate, laminated, suture profound; inner margin pro- 

 foundly crenulated. Length one and a quarter inch. Height one and one- 

 eighth nearly. 



