A Preliminary Description of Seven New 
Species of Fish from the Cretaceous 
iG 
of Kansas. 
Contributions from the Paleontological Laboratory, No. 30. 
‘ 
BY ALBAN STEWART. 
With Plate XVII. 
The following are descriptions of some specimens of Cretaceous 
fishes contained in the museum of the University of Kansas, which 
I think are new to science. 
Fig. 1. Rostrum of P. recurvirostris. 
PROTOSPHYRAENA Leidy. 
Protosphyreena recurvirostris sp. nov. 
The material upon which this species is based consists of a 
complete rostrum, No. 373, with the adjoining portions of the 
vomer and parasphenoid, and differs from P. nifda in the following 
important characters. The superior distal surface is regularly 
rounded and not flat as in the species mentioned, and the cross- 
section at this point is round instead of semi-circular or. oval. 
The specimen corresponds in some respects with P. penetrans, and 
to this species it is more closely allied than to any of the other 
forms which have been described. I was inclined to call it 
P. penetrans until I found a specimen of this species, when I dis- 
covered that it differed from it in a number of points which were 
sufficiently great to be called specific. The rostrum is more slen- 
der as a whole and is contracted to a more acute point than in 
(191) KAN, UNLV. QUAR., VOL. VII, NO. 4, OCT., 1898, SERIES A, 
