lo Bulletin 3 (93) 



Chioiie cancellata. 



85^11. Venus cancellata l^m.., Syst. Nat., 12th ed., 1767, vol. 

 I, p. 1,130. 



Range in depth. — From 1,550 to 2,871 feet. 



DONAX. V 



Donax carinata var. galvestonensis. 



Sj-n. D. carinata Har., 4th Ann. &c., p. 121. 



Inhabiting the western coast of Mexico and Central America 

 is another form resembling somewhat closely D. carinata and mis- 

 taken for it by Reeve — Conch. Icon. vol. 8, pi. 2, fig. 11 — but 

 which in fact is quite distinct. It is devoid of the peculiar sharp 

 carina bordering the posterior slope, has no granules on the radi- 

 ating striae of this slope, and is devoid of the broad radiating color 

 bands. 



The Galveston well specimens are not so sharply carinate as 

 carinata, but have the granulated radii of that species. Variety 

 galvestonensis is somewhat intermediate between these two living 

 species. 



Range in depth. — From 2,552 to 2,920 feet. 



Donax tuinida. 



Syn. D. t7cmida Phil., Roemer's Texas, 1849, p. 453. 

 D. tuniida Har., 4th Ann. &c., p. 121. 

 Range in depth. — From the surface to 458 feet. 



STRIGILLA. 



Strigilla galvestonensis Vl. sp. PI. i, fig. 4. 



Syn. Strigilla no-BX pisiformis Har., 4th Ann. &c., p. 121. 



Specijic characterization.-- ^his sn\2l\ Strigilla is somewhat al- 

 lied \o pisiformis I<in., but is less inflated especially about theum- 

 bones, is fuller on the anterior submargin, and its beaks are slight- 

 ly inclined to point backwards instead of forwards. 



Range i7i depth. — From 2,552 to 2,733 feet. 



ABRA. 



A bra ceqitalis. 



Syn. Amphidesma (Equalis Say, Jr. Phila. Ac. Nat. Sci. , 

 1822, p. 307. 

 Syndosmya ccqualis Har., 4th Ann. &c., p. 121. 

 Range in depth.— From the surface to 900 feet. 



