78 PALEONTOLOGY OF NEW JEliSEY. 



A few imperfect shells of this species have been observed among the 

 collections from within the State. They are so extremely delicate and fragile 

 that they are usually broken in the sandy marl before they can be removed, 

 so that only a single valve has been obtained in a condition to serve the pur- 

 pose of illustration. The form is irregularly ovate, the anterior portion 

 forming three-fifths of the whole length, and the end rounded; posterior 

 extremity rather sharply pointed and the cardinal line abruptly and obliquely 

 sloping from the beak. Surface marked with very fine lines of growth, and 

 an indistinct furrow along the umbonal portion. In the interior the sinus 

 is very large and deep and muscular imprints very faint. 



Formation and locality: In the gray sandy marls at Shiloh, N. J. In 

 the collection of the Academy of Natural Sciences. 



Tellina (Peron^eoderma) pkoducta. 



Plate xiv, figs. 1-3. 



Tellina producta Conrad: Mioc. Foss., p. 36, PI. xix, fig. 5. 



Tellina (Peronceoderma) producta Con.: Proc. Acad. Nat. Sci. Phil., 1862, p. 573; 



Meek, Check List Miocene Foss., p. 10. 

 Tellina declivis (Con.) Heilprin: Proc. Acad. Nat. Sci. Phil., 1887, p. 403. 



" Shell narrow-elliptical, compressed; posterior side pointed, extremity 

 obtuse; fold submarginal, obscure; basal margin straight opposite the beak; 

 lateral teeth none." (Conrad.) 



The shells of this species are small, very fragile, and have a polished 

 surface; the form is elongate, triangularly elliptical, the anterior end being 

 about once and a half as long as the posterior, rounded at the end and along 

 the basal line; the posterior end is more pointed and the dorsal margin rap- 

 idly sloping; beaks minute; hinge very slender; teeth small; pit small 

 and triangular; lateral tooth on the anterior side very slender, not very 

 remote from the beaks. 



Formation and locality: The specimens are from the well-boring at 

 Atlantic City, N. J., and are in the cabinet of the Academy of Natural 

 Sciences at Philadelphia. 



