OP CONCHOLOGY. 



261 



DACTYLID^. 

 DACTYLUS, Kleiu. 

 D. IDONEUS, Conrad. — PI. 22, fig. 1. 



Amer. Jour, of Arts and Science, vol. xli., p. 344. Proceed. 

 Acad. Nat. Science, 1863, p. 



Locality. — National Well, Dauphin Co., N. C. 



A beautiful species of Dactylus lives in great abundance in 

 Tampa Bay, Florida, very closely allied to the Miocene fossil 

 D. ca7-oUnenses, Conrad. There is no other large recent species 

 on the Atlantic or Florida coasts, but there are in all four 

 Miocene species over IJ inches in length. 



D. EBOREUS, Conrad. — PL 21, fig, 11. 



iS. eborea. — Proc. Acad. Nat. Science, 1862, p. 287. 

 Locality. — Virginia. 



PLEUROTOMID^. 



BELLASPIRA, Conrad. 



Description. — Subfusiform, longitudinally ribbed ; canal very 

 short, labrum obsoletely and widely notched, curved outwards, 

 simple ; labium reflexed, entire ; columella straight. 



C. VIRGINIANA. — PI. 21, fig. 12. 



Mangelia virginiana, Conrad. — Proceed. Acad. Nat. Science, 

 1862, p. 286. 



Locality. — Yorktown, Va. 



Observation. — This shell does not agree in characters with 

 any of the genera or subgenera of PleurotomidiTS. It is a beau- 

 tiful and graceful shell with distant ribs and very minute, 

 close revolving lines, which become gradually more distinct on 

 the body whorl. The labium is slightly callous near the upper 

 extremity. 



Family BUCCINID^E. 



Subfamily MASSING. 



PTYCHOSALPTNX, Gill* 



Dr. Gill has published the diagnosis of a group of Miocene 

 fossil" shells which he observes is related to Buecinum, but it 

 obviously comes within the subfamily NassinjB, and is much 

 more nearly related to JSfassa or Tritia. The general thickness 



*Jour. Concb., iii., p. 153, 1867. 



