FAUNA OF ORTHAULAX PUGNAX ZONE. 141 



Family LEPTONIDAE. 



Genus ERYCINA (Lamarck) Recluz. 



Erycina (part) Lamarck, Aun. du Museum, vol. 6, p. 413, 1806 (heteroge^ 



neous assembly). Not Erycina Fabricius, 1808. 

 Erycina Recluz, Revue Zool., vol. 7, pp. 291, 325, 1844. Type, E. pellucida 



Lamarck. Not Erycina Philippi, 1836, (,=Ahra) nor Erycina Brown, 



1833, (=Atactodea). 

 'Neaeromya Gabb, Trans. Amer. Philos. Soc, vol. 15, p. 247, 1873; Proc. 



Acad. Nat. Sci. Phila. for 1872, p. 274, 1873. Type, iV. quadrata Gabb, 



Trans. Amer. Philos. Soc, vol. 15, pi. 10, figs. 4, 4», 4^ 

 Erycina Dall, Trans. Wagner Inst., vol. 3, pt. 5, p. 1140, 1900. 



ERYCINA? INDECISA, new species. 

 Plate 21, figs. 3, 8. 



Shell small, smooth, inflated, somewhat recalling Lasea rubra in 

 form but more elongate behind; anterior end shorter and more in- 

 flated than the longer portion behind the prominent beaks; interior 

 obscured by matrix. Length 4, height 3, maximum diameter 2 mm. 



Tampa silex beds at Ballast Point, Tampa Bay, Florida, one speci- 

 men. U. S. Nat. Mus. No. 165197. 



This has the aspect of an Erycina^ but from the fact that the in- 

 terior and the hinge are unknown, its true relations must remain in 

 doubt pending the receipt of more material. 



Genus BORNIA Philippi. 



Bornia Philippi, Moll. Sicil., vol. 1, p. 13, 1836. Type, Bornia corhuloides 

 (Bivona) Philippi. 



BORNIA TAMPAE, new species. 



Plate 38, fig. 6. 



Shell small, rounded-quadrate, with low, nearly central umbones; 

 the base gently arcuate, the ends subequally rounded, surface smooth, 

 valves rather compressed, the interior inaccessible. Length of shell 

 6, height 5, maximum diameter 3 mm. 



Tampa silex beds, one specimen. U. S. Nat. Mus. No. 166112. 



This species recalls B. triangula (Lea) Dall, but is more rounded 

 and has more prominent beaks. 



Family CAKDIIDAE. 



Genus CARDIUM (Linnaeus) Bruguiere. 



Cardium Linnaeus, Syst. Nat., ed. 10, p. 678, 1758; Mus. Lud. Ulricae, p. 

 483, 1764. No type selected. 



PectuncuUis Huddesford. in Lister, Conch. Index, Anat., p. 5, exiDl. pi. 13, 

 fig. 1, 1770. Sole example, Cardium edule Linnaeus (=Cardium Lin- 

 naeus). 



