53 MOLLUSCA OK THE GULF OF MEXICO 21 



{Bj'ssoarca) glomerula Uall, Bull. 37, U. S. Nat. Mu.s., p. 



42, pi. 8, figs. 9, 9 a, 1889. 

 {Bathyarca) glomerula Y)'3\\, Trans. Wagner Inst, Sci., vol. 



3, ])t. 4, p. 659, 1.S98 ; Sheldon, Palseont. Amer. , vol. i, 



p. 64, pi. 16, figs. 4, 5, 1 9 16. 

 Distribution. — Hatteras to St. Vincent, 100 to 6S3 fms. Otilf 



of Mexico, w^estern Florida region. (Dall). 



(;^Bathyarca) pectunculoides Scacchi 



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

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



pedunailoides var. orbiadata Dall, Bull. Mus. Comp. Zool., 

 vol. 9, p. 121, 188 1 ; Idem, vol. 12, p. 240, pi. 8, fig. 3, 

 18S6. 



{Bathyarca) pectuncidoides Dall, Trans. Wagner Inst. Sci., 

 vol. 3, pt. 4, pp. 619, 659, 1898 ; Sheldon, Palseont. 

 Anier., 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. 

 Pectuncidus aratus QonxzA, 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. 

 pectiniformis Orb., Moll. Cuba, vol. 2, j). 313, 1853 ; iyxoxpec- 



tmiformis Lamarck). 

 charlestonensis Holmes, Post-Plio. Fos. S. C, p. 16, pi. 3, 



fig. 5, i860. 

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

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

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



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



Plei-stocene : Knapp's No. 3 well, Terrebonne Parish, 670. 



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



Pliocene : Caloosahatchie, Fla, 



