112 Bulletin 34 144 



Note. — This is the larger and more fragile descendant of the 

 Miocene species arcuata Conrad. Popularly named the 

 angel's wing. Mitchell has studied its habits on the Tex- 

 an coast. 



truncata Sa}^, Jour. Acad. Nat. Sci, Phila., 2, p. 321, 1822 ; Sow- 

 erby, Thes. Conch., i, p. 488, pi. 104, f. 29, 30, '49 ; 

 DeKay, Zool, N. Y., Moll., p. 248, pi. 34, f. 323 a-b, '43 ; 

 Holmes, Post-Pl. Fos. S. C, p. 57, pi. 9, f. 4, '60 • 

 Gould, Inv. Mass., Binney'sed., p. 38, f. 364, 1870 ; Dall, 

 Bull. 37, U. S. N. M., p. 72, pi. 59, f. 12, 1889 ; Singley, 

 4th Ann. Rept. Tex., p. 331, '92; Mitchell, List Texas 

 Shells, p. 2 ; Dall, Tr. W. I. S., 3, p. 816, '98 ; Johnson, 

 Occ. Pa. B. S. N. H., 7, p. 79, 1915. 



Distribution. — Maine to Texas. Pleistocene to Recent. Gulf 

 coast. — West Florida ; Corpus Christi, Matagorda and Es- 

 piritu Santo Bays, Texas. 

 maritima (d'Orbigny) Dall, Bull. 37, U. S. N. M., p. 72, 1889. 

 Distribution.— Cited by Dr. Dall from West Fla. and Texas. 



Genus MARTESIA Leach 



cuneiformis Say, Jour. A. M. S. Phila., 2, p. 322, 1822, (as 

 Pholas); Gibbes, Tuomey's Geol. S. C, app., p. 22 ; 

 DeKay, Zool. New York, Moll., p. 248, '43; Holmes, 

 Post-Pl. Fos. S. C, p. 59, pi. 9, f. 3, '60; Tryon, Mon. 

 Pholadacea, p. 91, '62 ; Dall, Proc. U. S. N. M., 4, p. 337, 

 '83; Bull. 37, U. S. N. M., p. 72, '89; Mitchell, List 

 Tex. Sh. ; Dall, Tr. W. I. S., 3, p. 820, '98; Johnson, 

 Nautilus, 18, p. loi, f. 2, 1904; Occ. Pa., B. S. N. H., 7, 

 p. 80, 1915. 



Distribution. — Connecticut to Trinidad. Miocene (of Va.) to 

 Recent. Gulf coast. — Cedar Keys, Fla. ; Texas. 

 striata Linnseus, Sj-st. Nat., ed. XII, p. iiii, 1767, {diS Pholas); 

 Tryon, Mon. Pholadacea, p. 92, 1862 ; Fischer, Man. de 

 Conch., p. 1136, pi. 23, f. 21, '87 ; Dall, Bull. 37, U. S. N. 

 M., p. 72, '89; Johnson, Nautilus, 18, p. 100, f. i, 1904. 



