9 8 



Bulletin 34 



Texas. But the true Donax obesa d'Orbigny (Voy. l'Amer. 

 Merid., p. 541, pi. 81, f. 28-30, 1846) is a west coast 

 species, living from Panama to Paita, Peru. It is not 

 identical with the Californian Donax obesa of Gould, 1851, 

 which is laevigata Deshayes, 1854. 



(Iphigenia) brasiliana Lamarck, An. s. Vert., 5, p. 553, 1818, 

 (as Cafisa); Ency. Meth., pi. 261, f. 10; Dall, Bull. 37, 

 U. S. N. M., p. 58, 1889 ; Nautilus, 5, p. 126, 1892 ; Dall 

 and Simpson, Bull. U. S. Fish Com., 1, p. 476, 1901. 

 Distribution. — Florida to Rio de Janeiro and the Antilles. Gulf 

 coast. — West Florida and Texas. 



Genus SOLEN Linnaeus 

 viridis Say, Jour. A. N. S. Phila., 2, p. 316, 1821 , Conrad, Am. 

 Mar. Conch., 2, p. 28, pi. 5, f 2, 1831 ; Dall, Bull. 37, U. 

 U. S. N. M., p. 72, 1889 ; Tr. W. I. S., 3, p. 952, 1900. 

 Distribution. — Rhode Island to Georgia. Cited by Dall, 1889, 

 from Sarasota, West Florida. 



Genus ENSIS Schumacher 

 directus Conrad, Proc. Acad. Nat. Sci. Phila., 1, p. 325, 1843, 

 (as Soleri)\ Dall, Proc. U. S. N. M., 22, p. 107, 1899 ; Tr. 

 W. I. S,, 3, p. 954, 1900 ; Vanatta, Proc. A. N. S. Phila., 

 55, P- 757> '°3 : Clark, Md. Geol. Surv., p. 196, pi. 55, 

 f. 9, 10, 1906. 



magnode?itatus H. C. Lea, Tr. Am. Phil. Soc., 2d Ser., 9, p. 



236, pi. 34, f. 8, 1845. (as Soleri). 

 ensis Conrad, Bull. Nat. Inst. 2, p. 191, 1842 ; Tuomey and 



Holmes, Pleio. Fos. S. C.,p. 101, pi. 24, f. 3, 1857 ; 



Holmes, Post-Pi. Fos. S. C, p. 53, pi. 8, f. 13, i860. Not 



of Linnaeus, Syst. Nat. 11 14. 

 americana Gould, Inv. Mass., p. 42, f. 366, '70; Ver- 



rill, Inv. An. Vineyard Sound, p. 674, pi. 32, f. 245, 1873; 



Dall, Proc. U. S. N. M., 6, p. 337, '83; Mitchell, List 



Tex. Sh., p. 3 ; Dall, Bull. 37, U. S. N. M., p. 72, pi. 53, 



f. 4, pi. 55, f. 4, 5, 1889. 

 Note. — The American species is larger and broader than the 



