1905.] NATURAL SCIENCES OF PHILADELPHIA. 7 



Trematopygus orucifer (Morton). 



Ananchytes cruciferus Mort., Am. Jour. Sci., XVIII, 245, pi. 3, f. 8, 1830. 

 Trematopygus crucifer Clark, U. S. Geol. Sur. Bull, 97, p. 63, pi. 27, figs, 

 la-i. 



Catopygus oviformis Conrad, Jour. Acad. Nat. Sci., II, 2 ser., 30, pi. 1, f. 9. 

 Cassidulus florealis (Morton). 



Chjpedsler florealis Mort., Am. Jour. Sci., XXIII, 29-4, 1833; Synop. Org. 

 Rem., 76, pi. 3, f. 12, and pi. 10, f. 12. 



Cassidulus jiorealis Clark, U. S. Geol. Sur. Bull., 97, p. 66, pi. 28, fig.s. la-b. 



Type from the Delaware and Chesapeake Canal. The specimens 

 figured by Clark are probably from Alabama, and not from New 

 Jersey. They agree with specimens in the "Gabb collection" from 

 Uniontown, Alabama. 



Cassidulus sequoreus Morton, Syn. Org. Rem., 76, pL 3, f. 14, 1834. 



Cassidulus micrococcus Oabb, Proc. Acad. Nat. Sci., 1S60, p. 519 ; Clark, U. S. Geol. Sur. Bull., 



97, p. 69, pi. XXX, flg.s. la-i. 

 Cassidulus subquadratus Conrad, Jour. Acad. Nat. Sci., 2 ser., IV, 291, pi. 47, f. 19, 1860. 

 Cardiaster cinctus (Mortonl. 



Ananchytes cinctus Mort., Jour. Acad. Nat. Sci., VI, 200, 1830; Am. Jour. 

 Sci., XVIII, 246, pi. 3, f . 7, 1830. 



Cardiaster fimbriatus (Morton) = C. cinctus, Mort. 



Ananchytes fimhriatus Mort., Jour. Acad. Nat. Sci., VI, 200, 1830; Am. Jour. 

 Sci., XVIII, 245, pi. 3, f. 9, 1830. 



Hemiaster parastatus (Morton). 



Spatangus cor-marinum(?) Morton, Am. Jour. Sci., XVIII, 2.50, pi. 3, f. 10, 



1830. 

 Spatangus parastatus Mort., Am. Jour. Sci., XXIII, 294, 1833; Syn. Org. 



Rem., 77, pi. 3, f. 21, 1834. 



Hemiaster Stella (Morton). 



Spatangus stella Morton, Am. Jour. Sci., XVIII, 245, pi. 3, f. 11, 1830. 

 Hemiaster ungula (Morton) 



Spatangus ungula Morton, Am. Jour. Sci., XXIII, 131, pi. 10, f. 6, 1833. 

 Pygurusd) geometricus (Morton). 



Clypeaster geometricus Morton, Am. Jour. Sci., XXIII, 131, pi. 10, f. 9,'1833. 

 Pygurus{1) geometricus Clark, U. S. Geol. Sur. Bull., 97, p. 92. 



Discoidea occidentale Gabb, Jour. Acad. Nat. Sci., IV, 2 ser., 398, pi. 68, figs. 42-41, 1860. 



MOLLUSOA. 



PELECYPODA. 



NUCULID^. 



Nucula eufalensis Gabb, Jour. Acad. Nat. Sci., IV, 2 ser., 397, pi. 68, i. 35. 

 Nucula percrassa Conrad, Jour. Acad. Nat. Sci., IH, 2 ser., 327, pi. 35, f. 4. 



Also specimen figured by Whitfield (Mon. U. S. Geol. Sur., IX, 102, 

 pi. XI, figs. 4-6). 



