326 [December, 1843. 



I am doubtful of the geological age of the three fossils above described, as we 

 know not the group among which they occur. 



2. Soles ensiformis. Linear, slightly curved, gradually narrowed from 

 the middle to the posterior extremity, which is subcuneiform ; anterior margin 

 obliquely subtruncated. Length, three inches. 



Locality. St. Mary's river, Maryland. Miocene. 



TcHRITELLA. 



Turritella hipertlta. Turrited, thick ; suture profoundly excavated; whorls 

 flattened, divided nearly in the middle by a deeply impressed revolving line, 

 margined on each side by a fine impressed line ; inferior volutions carinated at 

 base; lines of growth oblique, meeting at an angle at the groove in the middle 

 of each volution. Length, ; width, seven-eighths of an inch. 



Locality. Vicinity of Petersburg, Virginia. Mr. Tuomey. 



This large species is very distinct from all others, and remarkable for the pro- 

 found channel between the whorls. 



ScALARIA. 



Scalaria procera. Subulate, turrited, volutions scalariform, contracted in- 

 feriorly, with obsolete revolving impressed lines : ribs thick, elevated, reflected, 

 distant, with sharp triangular reflected aculeii on the shoulder of each volution; 

 base with a revolving interrupted carina; aperture longitudinally obtusely oval. 



Length, ; width of body whorl, nearly half an inch ; three volutions 



from the base measure one inch. 



Locality. Vicinity of Petersburg. Mr. Tuomey. 



Pleurotoma. 



Pleurotoma multisecta. Turrited, with closely arranged deeply impressed 

 revolving lines, and longitudinal robust prominent ribs; superior portion of each 

 whorl destitute of ribs, with minute revolving lines, and a sharp revolving slight- 

 ly undulating carina margining the suture; aperture elliptical, rather more than 

 one-third the length of the shell. Length, one and one-eighth of an inch; greatest 

 width, three-eighths of an inch. 



Locality. Vicinity of Petersburg. Mr. Tuomey. 



BuCCINUM. 



Buccinum harpuloides. Ovate, ventricose, with alternated revolving raised 

 lines, and longitudinal slightly oblique rather distant narrow elevated ribs: spire 

 scalariform, volutions five; base of the shell with an acute oblique carina; aper- 

 ture half the length of the shell ; columella profoundly concave, with a promi- 

 nent fold or carina on the angle formed by the obliquely truncated base ; a slight 

 protuberance near the superior extremity of the aperture; margin of labrum 

 nearly straight, suddenly rounded inferiorly. Length, one inch ; width, five- 

 eighths of an inch. 



Fusus 7 



Fusus 1 cannabinus. Fusiform ; whorls six or seven, with longitudinal 

 rounded costae, and revolving prominent alternated lines finely wrinkled trans- 

 versely ; spire somewhat scalariform, elevated ; suture undulated; body whorl 



