53 MoLtuscA OF THE Gulf of Mexico 21 



{Byssoarca) glomerula Dall, Bull. 37, U. S. Nat. Mus., p. 



42, pi. 8, figs. 9, 9«, 1889. 

 {Bathy area) glomerula Yi2X\., Trans. Wagner Inst, Sci., vol. 



3, pt. 4, p. 659, 1898 ; Sheldon, Palseont. Amer., vol. i, 



p. 64, pi. 16, figs. 4, 5, 1916. 

 Distribution. — Hatteras to St. Vincent, 100 to 683 fms. Gulf 



of Mexico, western Florida region. (Dall). 



(Bathyarca) pectunculoides Scacchi 



Area pectunculoides Scacchi, Not. Conch, foss. Gravina, in 



Ann. Civ. Sicil., vol. 6, p. 82, 1834. 

 pectuyiculoides var. orbiculata Dall, Bull. Mus. Comp. ZooL, 

 vol. 9, p. 121, 188 1 ; Ide7n, vol. 12, p. 240, pi. 8, fig. 5, 

 1886. 

 {Bathya?'ca) pectunculoides Dall, Trans. Wagner Inst. Sci., 

 vol. 3, pt. 4, pp. 619, 659, 189S ; Sheldon, Palseont. 

 Amer., vol. i, p. 65, pi. 16, figs. 9-11, 1916. 

 Distribution. — Norway to St. Vincent, 75 to 1568 fms. Vari- 

 ety orbiculata dredged by the Blake in Gulf of Mexico. 



Genus GLYCYMERIS Da Costa 

 pectinata Gmelin 



Area pectinata Gmelin, Syst. Nat. 6, p. 3313, 1792. 

 Pedunculus aratus Q.ovLXzA, Am. Journ. Sci., vol. 41, p. 346, 



1841 ; Fos. Med. Tert., p. 62, pi. 34, fig. 2, 1845 ; Tuomey 



and Holmes, Pleio. Fos. S. C, p. 50, pi. 17, fig. 6, 1857. 

 pectiniforrnis Orb., Moll. Cuba, vol. 2, p. 313, 1853 ; {xioXpec- 



tiniformis Lamarck) . 

 Charleston en sis Holmes, Post-Plio. Fos. S. C, p. 16, pi. 3, 



fig. 5, i860. 

 pectinatus DaJl, Bull. 37, U. S. Nat. Mus., p. 42, 1889. 

 pectinata Dall, Trans. Wag. Inst., vol. 3, pt. 4, p. 612, 1898. 

 Distribution. — Hatteras to Nicaragua, 2-175 fms. Miocene to 



Recent. Gulf Coast. — Recent : west Florida, Texas. 



Pleistocene : Knapp's No. 3 well, Terrebonne Parish, 670, 



700-780 feet ; New Orleans Gymnasium well 1200 feet. 



Pliocene : Caloosahatchie, Fla, 



