1903.] Hay, North American Cretaceous Fishes. 83 



wards Cope identified as belonging to the same species much 

 more satisfactory materials. One lot of these, No. 1736 of 

 this Museum, was figured on plate lii, fig. i, of his large work 

 of 1875. Another, No. 1735, furnished figures 3-5 of plate 

 liii of the same work. From these more complete materials 

 many additional characters of the species were determined. 

 In the paper in which E. nepaholica was described, Cope pro- 

 posed also the new species CimoUchthys sulcatus, which he 

 afterwards made a synonym of E. nepaholica. The type of 

 this. No. 1882, is the left dentary, showing thirteen large 

 teeth. The distal end of this dentary afterwards furnished 

 figure 8 of plate 1 of the monograph of 1875. 



The type of CimoUchthys semianceps consists of vertebrae, a 

 palatine, portions of the dentaries with teeth, and some other 

 parts. The vomer mentioned by Cope has not been recog- 

 nized. The number of this type is 1989. In the monograph 

 just mentioned Cope figured other specimens which he had 

 identified as belonging to this species. One of these, now 

 No. 1740, furnished figures i and la of plate liii; another, 

 No. 1 741, furnished figure 2 of the same plate; while No. 

 1742 was represented by figures 6-9. 



Einpo merrillii was based on fragments now included under 

 the number 1737. There are present nearly the whole left 

 palatine, of which figure 11 of plate liii of Cope's monograph 

 represents the anterior end; a considerable part of the right 

 palatine, one fragment of which is shown by figure 12; a 

 flat bone, represented by figure 10, and which is probably the 

 entopterygoid ; and the vomer, represented by figure 1 3 . 



Entpo contracta is likewise founded on fragments of jaws. 

 There are present the right palatine, except its anterior ex- 

 tremity; the anterior extremity of the left palatine; the 

 vomer; and the anterior portion of the left dentary. Most of 

 these parts are represented on plate liii of Cope's work. The 

 Museum number of this lot is 1738. 



It may be said that the figures which Cope has published 

 represent the originals adequately, and that nothing would be 

 gained by refiguring them. If the figures are in some cases 

 unsatisfactory the fault lies in the materials. 



