98 Bulletin 34 130 



Texas. But the true Donax obesa d'Orbigny ( Voy. 1' 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 IcBvigata Deshaj^es, 1854. 



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

 {2ls Capsa)\ 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., i, 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, 182 1 , 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., i, p. 325, 1843, 



(as Soleii); 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, '03 : Clark, Md. Geol. Surv., p. 196, pi. 55, 



f. 9, 10, 1906. 

 tnagnode7itatus H. C. Lea, Tr. Am. Phil. See, 2d Ser. , 9, p. 



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

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



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



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



of Linnseus, 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 



