345 Dominican Fossils— Maury 



mana, Bowden and Gatun. 



Localities. — (Exp'd '16) Bluffs i and 2, Cercado de Mao; 

 Zones B and F, Rio Gurabo at Los Quemados; Samba Hills, ap- 

 proximate altitude 540 feet; trail Hato Viejo to Potrero, Rio 



Amina. 



Glycimeris jamaicensis Dall 

 Plate 26, Figure 13, 

 Pectunculus pennaceus Guppy, Quart. Jour. Geol. Soc. London, vol. 22, 



p. 293, 1866. Not of Lamarck. 

 Axinea pennacea Gabb, Trans. Amer. Phil. Soc, vol. 15, p. 255, 1873. 

 Pectunculus decussatus Guppy, Quart. Jour. Geol. Soc, vol. 32, p. 532, 



1873. Not of Hanley. 

 G/ycymeris jamaicensis Dall, Trans. Wagner Inst., vol. 3, pt. 4, p. 608, 

 1898: pt. 6, p. 1586, 1903. 



We found this a rarer species than the preceding. It ap- 

 pears to be the ancestor of the Miocene- Recent G. pennacea La- 

 marck, which it closely resembles. The Bowden shell was differ- 

 entiated from the recent by Dr. Dall whose description applies to 

 our Dominican shells. The Gatun analogue is G. carbasina B. 

 and Pils. 



Localities. — (Exp'd '16) Zone I, Rio Cana at Caimito; 

 Zone G, Rio Gurabo at Dos Quemados. 



Genus Pteria Scopoli 



Pteria inornata Gabb 

 Plate 26, Figure 14 



Avicula inornata Gabb, Trans. Amer. Phil. Soc., vol. 15, p. 253, 1873. 

 Pteria inornata Dall, Trans. Wagner Inst. Sci., vol. 3, pt. 4, p. 669, 

 1898. 



We have a large series of all ages and sizes of a Pteria which 

 answers to Gabb's description of this unfigured species. Con- 

 siderable variation is shown in ^the size of the ears, the anterior 

 in some shells being unusually large. The outer layer of the 

 shell is generally worn off, leaving the nacreous under layer ex- 

 posed; but sometimes the outer remains and is prettily orna- 



