19S1] Marine Molluscan Shells of Beaufort 143 



Columhella (Anachis) ohesa C. B. Adams. S C J 



Dall, U. S. Bur. Fish. Bull., vol. 20, pt. 1, p. 404, 1900. 



Occasional, inside. 

 Columhella (Astyris) lunata Say. S C J 



Dall, U. S. Nat. Mus. Bull. 37, pi. 50, fig. 16. 



Common, inside. 

 Alectrion acuta Say. 



Figures 30 and 31. 



Two specimens, inside. 

 Alectrion (Hima) ambigua (Montagu). S J 



Figures 18, 19 and 20. 



Three specimens, inside. These specimens differ from Haitian specimens by 

 having nine instead of thirteen or fourteen ribs and in being slightly less 

 shouldered. 

 Alectrion (Hima) vibex (Say). S C O J 



Dall, U. S. Nat. Mus. Bull. 37, pi. 50, fig. 8. 



Abundant, "on the grassy sand-flats at the edges of the salt marshes, where 

 it replaces A. obsoleta, found also, but less frequently, upon exposed mud- 

 flats." Osborn. 

 Alectrion {Ilyanassa) obsoleta (Say). S C O J 



DaU, U. S. Nat. Mus. Bull. 37, pi. 50, fig. 9. 



Md. Geo. Surv., Plio.-Pleisto., pi. 49, figs. 3 and 4. 



Very abundant, inside. (See Coues and Osborn.) 



Figure 37 is a carinated form of this species. 

 Alectrion (Tritia) trivittata (Say). S C J 



Dall, U. S. Nat. Mus. Bull. 37, pi. 48, fig. 13; and pi. 50, fig. 7. 



Uncommon, inside. 

 Busycon carica (Gmelin). S C O J 



Rogers, Shell Book, p. 70, fig. 2. 



Common, especially inside on sand flats. (See Coues and Osborn.) 

 Busycon perversum (Linne) . S C J 



Rogers, Shell Book, p. 71, fig. 1. 



Occasional, chiefly outside. (See Coues.) 

 Busycon (Sycotypus) canaliculaium (Linne). S C J 



Dall, U. S. Nat. Mus. Bull. 37, pi. 13, fig. 1. 



Occasional, inside. 



Stimpson also records Busycon pyrum. 

 Fasciolaria dista^is Lam. S C O J 



Arnold, Sea-beach at Ebb-tide, p. 86, fig. 3. 



Fairly common, inside on mud flats. (See Osborn.) 

 Fasciolaria tulipa Linne. S C 



Arnold, Sea-beach at Ebb-tide, p. 86, fig. 2. 



"One mutilated specimen." Coues. 

 Fasciolaria gigantea Kiener. S C J 



Arnold, Sea-beach at Ebb-tide, p. 86, fig. 1. 



Occasional, outer beach, rarely entire. 

 Marginella apicina Menke. 



Figure 21. 



Several, inside, bluish and fossil-looking. 



