182 PALEONTOLOGY OF NEW JERSEY. 



form of a notch for the reception of the tooth, as it leaves the tooth entirely 

 free and uncovered, while in the left valve the hinge-fold is entirely straight 

 on the face. The folds or plates for the reception of the ligament I a.ve 

 been quite large and distinct. Considering the above features I have con- 

 cluded to place the species back under Panopea^ where Mr. Conrad origi- 

 nally placed it, as the evidence seems to be more in favor of that reference 

 than to Glycimeris, Dr. Stoliczka also considers it as not belonging to the 

 genus Glycimeris, judging only from Mr. Conrad's figure. 



Formation and locality. — In the Lower Grreen Marls at Holland, Mon- 

 mouth County, and near Burlington and elsewhere in New Jersey. 



SOLENID^. 



Genus SOLYMA Conrad. 1871. 



(Am. Jour. Conch., Vol. VI, p. 75.) 



Solyma Uiieolata. 

 Plate XXV, Figs. 11-13. 



Solyma Uneolatus Conrad. Am. Jour. Conch., Vol. YI, p. 75, PI. Ill, Fig. 9. Gabb, Proc. 

 A. K Sci., 1876, p. 305. 



Shell transversely elongate-elliptical, about twice as long as high, with 

 subparallel dorsal and basal margins, the anterior end rounded and the pos- 

 terior end subtruncate, a little longer above than below. Valves convex, 

 with a very slight angulation along each umbonal slope ; beaks large, prom- 

 inent, nearly centrally situated and projecting somewhat strongly above the 

 cardinal line. Surface of the shell marked only by fine concentric lines of 

 growth. Hinge-plate very narrow and teeth short. Muscular scars, the 

 anterior only seen, small, obscure, and somewhat elongate. 



The shell resembles in its general expression a species of Solecurtus^ 

 with which genus Dr. Stoliczka feels inclined to associate it. There is but 

 a single imperfect right valve in the collection, and this appears to be the 

 only one Mr. Conrad used in formulating his genus. The pallial line is not 

 visible nor is the posterior muscular impression, and the hinge characters 

 are all that are given as generic characters. I know of no other New Jer- 

 sey Cre^ceous shell with which it can be confounded. 



