43 MOLI.USCA OF THE GuLF OF MEXICO II 



Distrib'.ition. — Norway to Yucatan, 85 to 1095 fnis. Gulf of 

 Mexico, Yucatan Strait, 640 fms. (.S". ,5". Blake) 



minuta Phili',)i)i 



Pectuncnlus inmutiis Philippi, En. Moll. Sic, vol. i, p. 63, 



Tab. 5. fig. 3, vol. 2, p. 45. 

 miymta Dall, Bull. Mus. Com]j, Zool., vol, g, p. 119, 1881 ; 

 Idem, vol. 12, p. 236, 1886 ; Bull. 37, U. S. Nat. Mus., p. 

 42, 1889. 

 Distribution. — Norway to Barbados, 30 to 2221 fms. Miocene 

 to Recent. Gulf of Mexico west of Florida, 30 fms. 

 tenella Jeffreys, Ann. Mag. Nat. Hist., p. 433, 1876. 



tenclla Dall, B. M. C. Z., vol. 9, p. 118, 1881 ; Idem, vol. 

 12, p. 236, 1886: Bull. 37, U. S. Nat. Mus., p. 42, 1889. 

 Distribution. — North Atlantic to Cuba, 197 to 2033 fms. Gulf 

 of Mexico west of Florida {S. S. Blake'). 



Genus ARCA Linnaeus 



OCCidentalis Philippi, Abbild. u. Beschr., vol. 3, p. 14, pi. 17 b, 



figs. 4 a-c, 1847. 

 zebra, Swainson, (in part), Zool. 111., No. 26, pi. 118, 1831. 

 no^ DaW, Bull. 37, U. S. Nat. Mus., p. 40, 1889. Not A. 



nocE Linnaeus of the Mediterranean fauna. 

 occideyitalis^i^Ci^X^ow, Palaeont. Americana, vol. i, p. 8, pi. i, 



figs. 8 to II, 1 91 6. 

 occidentalis Maury, Bull. Amer. Pal., No. 29, p. 163, pi. 29, 



fig- 3. 19.17- 

 Distribution. — Hatteras to Yucatan, i to 20 fms. Miocene to 



Recent. 

 Gulf Coast. — Living on west coast Florida. Pliocene: Caloos- 

 ahatchie marls, Fla. 

 umbonata Lamarck, An, s. Vert., vol. 6, p. 37, 1819. 



imbricata Dall, Bull. 37, U. S. Nat. Mus., p. 40, 1889 ; 

 Mitchell, List Texas Shells, Not A. imbricata of Bru- 

 s:uiere. 



