62 PALEONTOLOGY OF NEW JERSEY. 



sniMlk'i- and (lefptn- than in tlii' It-t't valve. 'Vhy muscular imprints are pro- 

 portioniiUy laru'i', narrow, and elongated, imicli resembling those of Lueina; 

 the posterior imprint l)cing also the largest 



The two valvi's t'roni whieh the al)ove tV-atures are taken appear to 

 belong together, although the}' were st-parated when they came into my 

 hands, and the right one only in fragments, with parts missing-. The hinge 

 portions, however, are present, although fractured. As they fit each other, 

 the features as given from them may be considered as rehable for the species. 

 Local it 11 : Mr. Conrad's type specimen, which is the largest, is labeled 

 ' in his own handwriting as "Shiloh, N. J.," and is from the cabinet of the 

 Academy of Natm-al Sciences, Philadelphia. Tlie others are from Bridge- 

 ton, N. J., near ShHoh, and belong to the Natroual Museum at Wash- 

 ington, D. C. 



Family I.UCINin.^. 

 Genus LUCINA Bmg. 



LUCINA ACCLINIS? « • 



Fliitc X, figs. 5 and 0. 



Litetnaacclinis Conrad; Foss. Tert. Form. N. A., p. 21, PI. vi, fig. 3. 

 Mysia Americana Conrad; (not Defr.) Miocene Foss., p. 30, PI. xvi, fig. 2. 

 Lucina Americana Conrad; (7iot Defr.) D'Orb., Piod., vol. o, p. 117, No. 2191. 

 Mysia rtcf//».s Conrad; Proc. Acad. Nat. Sci., Phil., 1802, p. 577. Meek, Check List, 

 p. 8. 



Mr. Conrad describes his Mysia Americana in Miocene P'os.sils, p. 30, 

 as follows: "Shell suborbicular or lentiform, a little oblique, with strong 

 lines of gi'owth; hinge with two diverging teeth in each valve; posterior 

 tooth of the right valve bitid; anterior muscular impression not profoundly 

 elongated." 



I have seen only one fragment, about half of a left valve, of the shell 

 which I suppose to be identical with this species; but 1 can feel little hesita- 

 tion about its identification. The only point of difference between it and 

 Mr. Conrad's figure, is the lack of a posterior sulcus in the figure, wdiile 

 there is a faintly marked sulcus on the specimen. The hinge plate, as far 

 as seen, con-esponds, as do all the features which are visible on the speci- 



