150 PALAEONTOLOGY OF NEW JEESEY. 



what less triangular form, with a broader posterior end and not quite such 

 ventricose valves. This species represents very well some of the more 

 ventricose forms, which are usually referred to F. Conradi, from Alabama 

 and Texas, and which, although usually more or less marked with strong 

 varices externally, do not retain them on the internal casts. In this respect 

 they differ very materially from the New Jersey forms of that species, which 

 have the three or more very strong undulations of the exterior equally well 

 marked on the casts, while these specimens are entirely destitute of this 

 feature, for which reason I am inclined to think they really represent, with 

 the southern forms above mentioned, an entirely distinct species from F. 

 Conradi. Dr. Morton included both forms under the one designation, but 

 his figured specimens I believe were from New Jersey, although the types 

 themselves are not now to be found. 



Formation and locality. — The type specimen is given by Mr. Gabb as 

 from Boonton, New Jersey. The second specimen mentioned above is 

 marked on the label as from Monmouth County. I have seen other frag- 

 ments from Freehold. 



Veniella subovalis, Con. 

 Plate XIX, Figs. 1 and 2. 

 Venilia subovalis Conrad, on label in collection of the Acad. Nat. Sol., Philadelphia. 



Shell below a medium size, transversely subovate or subtrapezoidal in 

 outline, about once and a half as long as high, with subparallel dorsal and 

 basal margins. Beaks rather strong, but not very prominent, not project- 

 ing much above the cardinal line, directed anteriorly and closely approxi- 

 mate, situated at about the anterior third of the length of the shell. Ante- 

 rior end of the shell pointedly rounded, and the posterior end somewhat 

 squarely truncate or very broadly rounded, almost direct. Disk of the 

 valves ventricose and sharply angular along the umbonal ridge, leaving a 

 decided angulation on the cast, most distinctly so in the upper part. Sur- 

 face of the shell unknown. Interior of the right valve, as obtained on a 

 gutta-percha imprint taken from the cast figured, with a rather broad hinge- 

 plate and strongly marked muscular imprints of proportionally large size. 



