PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 129 



Cumingia tellinoides Con. Gould, luv. Mass., II, p. 79, 1870. Ver., Inv. V. S., p. 

 079, 1874. 



Not found by the Fish Commission, but several dead shells were col- 

 lected on the inner beaches by Mr. J. H. Blake, of Cambridge, and Dr. 

 Crocker, of Provincetown. 



Angulus tener (Say) Adams. Ver., Inv. V. S., p. 677, 1874. Gould, Inv. Mass., II, 

 p. 97, 1870 (Tellina). 



Abundant on the shore, low water. 



Venus mercenaria Linnd. Gould, Inv. Mass., II, p. 133, 1870. Ver., Inv. V. S., p. 

 G81, 1874. 



Eare on the beaches at Provincetown, but very common farther south 

 on the inner shores of the cape, especially in the neighborhood of Well- 

 fleet, where they attain a large size and have the purple coloration of 

 the interior of the shell more than usually intense and widespread. 



Tottenia gemma (Totteu) Perkins. Ver., Inv. V. S., p. 682, 1874. 



Very, abundant on the beaches in company with SJceneaplanorbis and 

 Littorinella mrnuta, and also found amongst the eel-grass. The small 

 dark-colored shells of this species are frequently scattered over the 

 white beaches in the greatest i^rofusion, appearing like coarse grains of 

 black sand. But, being lighter than the sand, they are readily blown 

 along by the wind until they collect in large numbers in the lee of any 

 prominence that may present itself, and in the furrows of the beaches. 

 In such places as these several handfuls of pure shells, with little 

 admixture of sand, may often be scooped up. The first specimens of 

 this species obtained by General Totten, its earliest describer, were from 

 the beach at Provincetown. 



Leevicardium Mortoni (Con.) Perkins. Ver., Inv. V. S., p. 683, 1874. Gould, Inv. 

 Mass., II, p. 143, 1870 (Liocardium). 



Low water, rare. 



Cryptodon Gouldii (Phil.) Adams. Gould, Inv. Mass., II, p. 100, 1870. Ver., Inv. 

 V. S.,p.686, 1874. 



Dead shells frequently found along the beaches; probably lives in 

 shallow water close to the shore, but not dredged in Cape Cod Bay in 

 less than thirteen fathoms, at which depth it was very abundant. 



Solemya velum Say. Gould, Inv. Mass., II, p. 48, 1870.— Solenomija velum Ver., 

 Inv.V. S.,p.688,1874. 



A few dead valves only were picked up on the inner beaches. 



Astarte castanea Say. Gould, Inv. Mass., II, p. 117, 1870. Ver., Inv.V. S., p. 685, 

 1874. 



Found abundantly in Provincetown Harbor, west and north of the 

 light-house, at low-water mark (Gould). Although searched for at this 

 locality in 1879, no specimens were discovered ; a very Iom' tide is prob- 

 ably required to uncover them. Mr. J. H. Blake says they are also 

 common low down on the inner shore, near Wood End Light. 

 Proc. Nat. Mus. 80 9 July 2, 1880. 



