148 PALAEONTOLOGY OF NEW JERSEY. 



Mr. Conrad is responsible, as he gives a new name. His description of the 

 genus Goniosoma is as follows: "An equivalve bivalve with prominent 

 beaks and entire pallial line? the muscular impressions terminal, posterior 

 one round; hinge (in the cast) with two prominent cardinal teeth, and a 

 long anterior lateral tooth, parallel with the hinge margin above it in the 

 right valve." Tlie specimen does not show a ridge in the valve, but on the 

 cast, which represents a ridge on tha opposite or left valve. If any one 

 will examine a valve of Veniella Conradi they will find these features all 

 represented in the same manner. 



Formation and locality. — In the Lower Gi"een Marls at Crosswicks, New 

 Jersey. Specimens borrowed from the cabinet of the Academy of Natural 

 Sciences of Philadelphia. 



Veniella elevata. 



Plate XIX, Figs. 6 aud 7. 



Vcnilia elevata Conrad. Am. Jour. Coiicb., Vol. VI, p. 74, PI. ILT, Fig. 7. 



Oomp. Veniella (Goniosoma) inflata Con. sp. Am. J. ConcU., Vol. V, p. 44, PI. I, Fg. 10. 



Shell very small and extremely ventricose, subquadrangular in outline, 

 with large, prominent, incurved beaks, very angular umbonal ridge, almost 

 vertical postero-cardinal slope, and rounded anterior margin, which curves 

 regularly into the basal line; posterior end almost vertically truncate. 

 Surface of the shell marked by four distant, elevated, concentric lamellae, 

 which jjroject nearly at right angles to the surface of the shell from which 

 they originate, the one nearest to the beak being small and inconspicuous. 

 Internal features not seen. 



A single valve only of this species has been observed, it being the 

 typical one figured by Mr. Conrad, loc. cit, and from which in all proba- 

 bility the profile view of both valves was also made by restoration. The 

 species is almost, if not quite, identical with V. (Goniosoma) inflata of the 

 same author, but preserves the shell, while that one is described from an 

 internal cast, thus presenting difi"erent characters. This one, however, is 

 smaller, but still fully as ventricose as that one, showing it to be an adult 

 shell. They both very closely resemble and appear to be dwarfed speci- 

 mens of a form which I have considered as V. Conradi Morton, but which 



