NATURAL SCIENCES OF PHILADELPHIA. 149 



described and illustrated many species in the Journal of the Academy in 1858 

 and I860. It may also be observed, by reference to the valuable memoir pub- 

 lished by Prof. Hall and Mr. Meek in the Memoirs of the American Academy 

 of Arts and Sciences, June, 1854, that the same geological masses exist in 

 Nebraska, some of the species being identical. A fine suite of specimens of these 

 having been sent to the Academy by the kindness of that energetic naturalist 

 Dr. Spillman, the comparison may be easily made. 



Cqrbula Foulkei. Testa land, triangulari, inflata, postice acute angulata, 

 antice oblique rotundata, aequilaterali. inferne paulisper striata ; valvulis cras- 

 siusculis ; natibus prominentibus, acuminatis, incurvatis, fere mediis. 



Cabinet of the Academy of Natural Sciences. 



Length -22, breadth -33 of an inch. 



Remarks. A single specimen only of this species was found at Haddonfield. 

 It was accompanied by two other species described by Mr. Gabb, viz. : C. sul- 

 compressa, from Tennessee, and C. crassiplicata, on the Mississippi and Tennes- 

 see State line.* It is very distinct from the latter, but is closely allied to the 

 former. It may, however, at once be distinguished from it by the posterior 

 angle being more acute, and in having the basal margin less rounded. I have 

 great pleasure in naming this species after our fellow member, W. Parker 

 Foulke, Esq., who so liberally and intelligently opened this locality of Green 

 Sand Formation with the view of making discoveries in these deposits of fos- 

 sil bones, &c, in which he was so eminently successful, as I have formerly 

 stated, (Proc. Acad. Nat. Sci. 1858, p. 218.) 



Modiola Juli.e. Testa transverse striata, subrhomboidea, subinflata, pos- 

 tice oblique truncata, inferne emargiuata, ; valvulis fragillissimis ; natibus 

 prominulis, fere terminalibus. 



My Cabinet and Cabinet of the Academy of Natural Sciences. 



Length -23, breadth -36 of an inch. 



Remarks. A single specimen only was found, and this consisted of an im- 

 perfect left valve. Being exceedingly thin and friable, it is impossible to re- 

 move it from the matrix of clay, where it exhibits only the interior, showing, 

 however, the transverse strias of the exterior. Roemer, in his " Kreide von 

 Texas," describes three species, but this species I believe is the first which 

 has been found in our Green Sand masses of New Jersey. Mr. Gabb has de- 

 scribed a species (ovata) from the Yellow Limestone of Timber Creek, N. Jersey, 

 and one (Saffordi) from the Ripley Group, in Tennessee, (Journ. Acad. Nat. Sci. 

 v. iv., n. s., p. 395). The species above described is nearest to Sufordi, being 

 nearly of the same size, but the outline is quite different, Julice being subrhom- 

 boidal, and Saffordl being gibbons. I name this species in honor of Mrs. W. 

 Parker Foulke, who took great interest, with her husband, in the develop- 

 ment of this interesting locality near to their country residence. 



Dosinia Haddonfieldensis. Testa subrotunda, lentiformi, compressa, sub- 

 sequilaterali, excelissime concentrice striata ; valvulis tenuibus; natibus promi- 

 nentibus, acuminatis, fere mediis. 



My Cabinet and Cabinet of the Academy of Natural Sciences. 



Length -40, breadth -46 of an inch. 



Remarks. Two imperfect specimens were obtained. Both with the two 

 valves, but neither perfect. The close, minute, impressed, concentric lines 

 are well preserved, but like all the mollusca found at this locality, the valves 

 are much fractured, while the juxtaposition of the pairs are maintained. It 

 is nearly of the same outline of D. depressa. Con., from Eufaula, Alabama, but 

 is more angular above and is not so large. 



* Jour. Acad. Nat. Sci., new series, v. iv., p. 394. 



1861.] 



