264 PALEONIOLOGY OF NEW JERSEY. 
Formation and locality: One of the specimens, the one figured, came 
from the deep cut of the Chesapeake and Delaware Canal, and is from a 
highly ferruginous, siliceous sand, which belongs to the Lower Marl Beds 
of New Jersey. As it is so near the limits of the State, it will no doubt 
be found, if it has not already been found within the State. The smaller 
individual is of similar character, but of a finer material, with a large pro- 
portion of iron, which gives it a reddish brown color. Both specimens are 
from the collection of the Acad. Nat. Sci., Phila. 
SCAPHITES RENIFORMIS. 
Plate xLiv, Fig. 3. 
Scaphites reniformis Morton : Synopsis, p. 42, Pl. 11, Fig. 6. 
Scaphites hippocrepis (Mort.), young specimen, Gabb, Synopsis, p. 33. 
Scaphites subreniformis D’Orbigny: Prodrome Paléont., vol. 2, p. 214, No. 56, not 
S. reniformis Brug. 
Dr. Morton describes this species as “‘ventricose in the middle, tapering 
rapidly at each end; with numerous costae that bifurcate laterally.” He 
gives the size as “less than [an] inch in length,” and states that only a sol- 
itary imperfect cast was found. Mr. Gabb, in his Synopsis, p. 33, appears 
to consider it a young specimen of S. hippocrepis De Kay, and so cites it. 
I do not know if Mr. Gabb saw the original specimen used and figured by 
Dr. Morton. The specimen is not now to be found, but in place of it there 
comes to me from the Academy’s collection a fragment of a Scaphites the 
figured type of S. iris Conrad, from Tippah, Mississippi, in the tray which 
should, according to the label in it, contain the type specimen. ‘The spec- 
imen used by Dr. Morton may have been one of S. hippocrepis, but I can 
hardly think so; as if so, it would not have presented so large an umbilicus, 
that of S. hippocrepis being very small. 1 have before me some fragments 
of very small specimens of that species which are as finely annulated as that 
shown in Dr. Morton’s figure, but without more exaggeration or careless 
delineation than has been permitted in the great majority of his figures no 
such drawing could ever have been made from it. And after seeing the 
accuracy of most of Dr. Morton’s figures and determinations, and carefully 
studying the matter, I am most strongly inclined to the belief that S. reni- 
formis was a distinct form from S. hippocrepis and a valid species. 
