92 TRIASSIC FISHES AND PLANTS. 
Cycapinocarpus CHapint Newb. 
Pl. XXIV, Fig. 4. 
Fruit broad-oyoid, nearly orbicular, 15 mm. wide by 18 mm. long, 
compressed, consisting of an ovoid nucleus bordered by a wing or margin 
which is emarginate or notched above, narrowed and becoming obsolete 
below; nucleus excavated in a broad sulcus, extending from the base to the 
center of the fruit, and traversed centrally by a depressed line. 
This interesting specimen was obtained at Durham, Conn, by Rey. J. 
H. Chapin, to whose courtesy I am indebted for the opportunity of exam- 
ining it. It is plainly the fruit of a cyead, and perhaps of Ofozamites latior, 
which is quite common at the locality where it was found. It probabiy 
consisted originally of a hard, ovoid, compressed nucleus, surrounded py a 
sarcocarp covered with a leathery rind. When compressed in fossilization 
the nut is shown in relief, and the envelope forms the margin about it. The 
fruit of Cycas revoluta would present much the same appearance if subjected 
to compression in clay. A large number of cycad fruits are known, but 
there is none described with which I have been able to identify this. 
Drio6nITEs LONGIFOLIUS Emmons, sp. 
Pl. XXV, Fig. 4. : 
One specimen only of this plant has yet been found in the Trias of 
New Jersey, and that was taken from the quarries at Newark by Prof. 
C. H. Hitchcock. It apparently represents the basal portion of a frond of 
large size, the rachis being very strong. The pinnules of only one side are 
shown. These diverge at a large angle, are linear, attached by the entire 
base, and are decurrent.” Their complete length is not shown, but they 
must have been at least two inches in length. They are separated by in- 
tervals of about twice their breadth. The nervation is obscure, but appar- 
ently fine and parallel. In many cyeads the basal pinnules of the fronds 
are shorter, and in some more widely separated than those above. They 
also diverge from the rachis at a larger angle. It is almost certain that if 
we were to obtain the upper portion of the frond of which we here have the 
base we should find the pinnules more approximated and diverging ata 
more acute angle than is the case with those now before us. Hence we 
