130 Journal of the Mitchell Society [February 



exception to this is the rock breakwaters at the inlet and at Cape 

 Lookout. The sound fauna may be much divided and classified as 

 to depth, salinity, character of bottom, plant association and current. 

 This would form an interesting study once the shell fauna is better 

 known. See also Coues. 



The following list is a composite of the above mentioned lists 

 and my collecting. The initials (S C O A J) following the name of 

 the species refer to the names of those reporting the presence of that 

 species. The reference below the name of the species is to a good 

 illustration or description. Some of the material collected may be 

 fossil, as indicated. Some of these fossil looking shells are greenish 

 to bluish-black and of a dead to chalky appearance. This may be 

 due to having lived in mud of that color. Shells are similarly dis- 

 colored from Massachusetts southward, especially such species as 

 Anomia simplex, Pecten gihbus, Ostrea virginica, etc. The smaller 

 Gastropods recorded as fossil (not discolored) were thrown on the 

 beaches by a channel dredge which dumped excavated material on 

 the sand bars and grassy flats. 



AMPHINEURA 

 Chaetopleura apiculata Say. S C O J 



Dall, U. S. Nat. Mus. Bull. 37, pi. .51, fig. 10. 

 Uncommon, inside, about break-waters. 



PELECYPODA 



Solemya velum Say. S C O A J 



Dall, U. S. Nat. Mus. Bull. 37, pi. 37, fig. 3. 



Locally abundant, sand flats. Town Marsh behind draw. (See Aller.) 

 Nucula proxima proxima Say. S C A J 



Md. Geo. Sur., Plio.-Pleistocene, pi. 65, figs. 1-4. 



Fairly common, in the channels. 

 Leda acuta (Conrad). S C J 



Md. Geo. Sur., Plio.-Pleistocene, pi. 65, figs. 5-8. 



Fairly common, sand flats. Bird Island. 

 Yoldia limatula (Say). S C J 



Dall, U. S. Nat. Mus. Bull. 37, pi. 49, fig. 5 and pi. 56, fig. 1. 



Uncommon, sand, dredged (Coues); only fragments found. 

 Glycymeris americana (Def ranee). S? J 



Outline regular, ribs radially striate. 



Occasional outside, much worn. 

 Glycymeris peclinata (Gmelin). S C J 



Figure 45. 



Uncommon to rare, outside, my specimens all fossil-looking. 

 Area occidentalis Philippi. S C J 



Figures 48 and 17646. 



