78 BUI.LETIN 34 ^^O 



1852 ; Verrill, Inv. An. Vineyard Sound, p. 682, 1873. 

 Distribution. — Massachusetts to Texas and the Bahamas. Gulf 

 coast. — Recent: St. Joseph's Bay, Calhoun Co., Fla ; 

 Corpus Christi Bay, (dredged, Singley). Pleistocene : 

 Corpus Christi, Tex., Osprey, Manatee Co., Fla. 



Genus PARASTARTE Conrad 

 triquetra Conrad, Proc. A. N. S., Phila., 3, p. 24, pi. i, f. 6, 

 1845, (as Astarte); Proc. A. N. S. Phila., p. 28, '62; 

 Dall, Proc. U. S. N. M., 6, p. 339, pi. 10, f. 1-3, '83 ; 

 Bull. 37, U. S. N. M., p. 48, pi. 49- f- 6, 7, 8, '89 ; 

 Tr. W. I. S., 3, p. 1333, 1903 ; Vanatta, Proc. A. N. S. 

 Phila., 55, 757, 1903; Vaughan, 2d Ann. Rept. Fla. 

 Surv., p. 149, 1909; Publ. 133, Carn. Inst., p. 171, 1910. 

 Distribution, — Peninsula of Florida. Genotype. Miocene 

 (Jackson's Bluff, Ocklockonnee River) to Recent. Gulf 

 coast. — Recent : St. Joseph's Bay, Crooked Isl., Cedar 

 Keys, Sarasota Bay, Tampa Ba3% (Conrad's type locality). 

 Pleistocene : Labelle, Manatee and Osprey. Pliocene : 

 Caloosahatchie and Myakka Rivers. 



Genus PETRJCOLA Lamarck 

 (Rupellftria) typica Jonas, Zeitschr. Mai., i, p. 185 ; Beitr. Moll., 

 p. I, pi. 7, f. 3, 1844, (^s Choristodon typicimi); Dall, Tr. 

 W. I. S., 3, p. 1059, 1900. 

 lithophaga Arango, 1880. Not of Retzius and Lamarck. 

 robusta Vi2X\ Bull. 37, U. S.N. M., p. 58, 1889. Not of 

 Sowerby. 

 Distribution. — Florida to Guadeloupe. Gulf coast. — West 

 Fla. Pliocene : Caloosahatchie marl. 

 (Petricolaria) pholadiformis Lamarck, An. s. Vert., p. 505, 1818 ; 

 Conrad, Am. Marine Conch., p. 37, pi. 7, f. 3, '31 ; Say, 

 Am. Conch, pi. 60, f. i, '34 ; Holmes, Post-Plio. Fos. S. 

 C, p. 38, pi. 7, f. 6, '60,; Gould, Inv. Mass., Binney!^ 

 ed., p. 90, fig. 398, '70 ; Dall, Bull. 37, U. S. N. Mus., p. 

 58, pi. 59, f. 15, '89; Singley, 4th Ann. Rept. Tex., p. 

 328, '92 ; Mitchell, List Texas Shells ; Dall, Tr. W. I. S., 



