387 Dominican Fossils — Maury 223 



Tellina maoica, n. sp. 

 Plate 38, Figure 5 



We collected four right valves of a Tellina distinguished from 

 the others of equal size by its very smooth surface marked only 

 by fine, irregularly spaced growth-lines ; in certain lights the 

 faintest radial striations can be detected ; instead of a sulcus the 

 posterior dorsal slope has a low fold extending to the umbonal 

 ridge ; interior of valve concealed by the matrix ; left valve un- 

 known. Length of right valve 44, altitude 25, semidiameter 

 4 mm. 



This, like our other larger Tellince , is quite unlike any spe- 

 cies described from Bowden ; while T. minuta Gabb is the only 

 member of the genus heretofore described from the Santo Do- 

 mingo Tertiary beds. 



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



Tellina cibaoica, n. sp. 

 Plate 38, Figure 10 



Shell rather small, thin, very highly polished ; shallowly sul- 

 cate posteriorly ; valves similar except that the right is slightly 

 more sharply lined and has the two strong lateral teeth which are 

 lacking in the left, as is characteristic of the section Bury tellina. 

 Surface of the valves marked only by fine, microscopic, impressed 

 lines obsolete posteriorly ; traces of very faint, close radial striae 

 can be seen in certain lights under a lens. Length 25, altitude 

 15.5, diameter 6 mm. 



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

 (Rare). 



Tellina (Merisca) crystallina Chemnitz 



Plate 38, Figure 4 



Tellina crystallina Chemnitz, vol. 11, p. 210, figs. 1947, 1948. 

 Tellidora crystallina Gabb, Trans. Amer. Phil. Soc., vol. 15, p. 249, 



1873- 

 This striking and exquisitely sculptured shell is the type of 

 the section Merisca. We obtained quite a quantity of specimens 



