371 Dominican Fossils — Maury 207 



Genus Divaricella von Martens 



Divaricella prevaricata, Guppy 

 Plate 35, Figure 10 

 Divaricella prevaricata Guppy, Proc. U. S. Nat. Museum, vol. 19, no. 



mo, p. 327, pi. 30, fig. 4, i8q6. 

 Divaricella prevaricata Dall, Trans. Wagner Inst. Sci., vol. 3, pt. 6, 

 pp. 1389, 1587, 1903. 



Shell resembling D. quadrisulcata d'Orbigny, but smaller. 

 Our largest is exactly the length of Guppy's Jamaican type, i. e. 

 8 mm., and measures 7 in altitude and 3 in semidiameter. This 

 shell is probably what Gabb referred to Lncina dentata Wood. 



Localities. — (Exp'd '16) Bluff 3, Cercado de Mao ; Zone I, 

 Rio Cana at Caimito ; Zone G, Rio Gurabo at Los Quemados. 

 (Rather abundant). 



Genus Diplodonta Brown 



Diplodonta capuloides Gabb 

 Plate 39, Figure 1 



Mysia capuloides Gabb, Trans. Amer. Phil. Soc, vol. 15, p. 252, 1873. 

 Diplodonta capuloides Dall, Trans. Wagner Inst. Sci., vol. 3, pt. 5, pp. 

 1182, 1183, 1900. 



Shell thin, globose, of the same type as the Eocene D. tur- 

 gida ; beaks small ; umbones enormous. Largest shell 4.50 in 

 length, altitude 4.50, semidiameter 2.25 mm. Our species ap- 

 pears identical with Gabb's unfigured D. capuloides, described 

 from Santo Domingo and also found at Bowdeu. 



Locality — (Exp'd '16) Bluff 3, Cercado de Mao. 



Diplodonta, pwicturella Dall 



Diplodonta ( Phlyctiderma ) puncturella Dall, Trans. Wagner Inst Sci. , 

 vol. 3, pt. 5, p. 1183, pi. 45, fig. 26. 1900. 



Our specimens are precisely like Dr. Dall 's beautifully drawn 

 figure of this Bowden species, agreeing in the minutest details of 

 the hinge. Length of largest shell 6.25, altitude 6, semidiameter 

 2 mm. The majority are smaller. Species still living. 



Gabb's Dominican D. subquadrata 1873, was preoccupied by 



