117 MoivLUSCA OF THE Gui.F OF MEXICO 85 



Isla de Cuba, 2, 1846; Dall, Proc. U. S. N. M., 23, p. 



296, 1901. 

 Distribution. — Gulf of Mexico to the Antilles. Dredged at 60 



fms. between Cedar Ke^^s and the Mississippi delta. 

 (Scissuia) similis Sowerby, British Miscellany, 1806 ; Dall, Proc. 



U. S. N. M., 23, p. 296, 1901. 

 decora Saj^, Jour. A. N. S. Phila., 5, 1827 ; Hanley, Thes- 

 aurus, pi. 56, f. 27 (only), 1846; Dall, Bull. 37, U. S. N. 



M., p. 60, 1889. 

 Distribution. — Florida to Venezuela. Gulf coast. — West Fla. 

 (Scissiila) iris Say, Proc. A. N. S. Phila., 2, p. 302, 1822 ; Dall, 



Bull. 37, U. S. N. M., p. 60, 1889 ; Proc. U. S. N. M., 23, 



p. 297, 1901. 

 caribcea d'Orbignj^, In de la Sagra's Hist. Isla de Cuba, 2, 



1846. 

 Distribution. — North Carolina to Guadeloupe Isl. Gulf coast. 



St. Mark's, Cedar Keys, Ft. Barranca, Fla. ; Cameron, 



Da. Pleistocene : New Orleans pumping station No. 7, 



(last identification doubtful). 

 Note. — As its name implies, this lovely shell is remarkable for 



the play of rainbow colors on the valves. 



Genus STRIGILLA Turton 

 carnaria Dinnseus, Sj^st. Nat., ed. X, p. 676, 1758; Dithyra 

 Britanica, p. 117, pi. 7, f. 15, 1822 ; Dall, Proc. U. S. N. 

 M., 23, p. 297, igoi ; Dall and Simpson, Bull. U. S. Fish 

 Com., I, p. 482, pi. 58, f. 3, 1901 ; Dall, in Matson, U. S. 

 G. S., Prof. Paper 98-L, p. 177, 1916. 

 carneosum Da Costa, 1778, (as Cardium). 

 areolata Menke, Zeitschr, Mai., 1847. 

 Distribution. — North Carolina to Brazil. Apparentlj' not re- 

 ported from the Recent Gulf fauna, but cited b}" Dr. Dall 

 from the Gulf Pleistocene in a well at Ft. Morgan, Ala., 

 at 100-112 and 169-175 feet. 

 flexuosa Say, Jour. A. N. S. Phila., 2, p. 303, 1822, (as 

 Tellina; Holmes, Post-PL Fos. S. C, p, 44, pi. 7, f. 14, 

 i860 ; Hilgard, Rept. Chief of Engineers to Sec. of War, 



