NEW FISH FROM THE CRETACEOUS OF KANSAS. Ill 



it shows that this genus persisted into the Fort Pierre time. As 

 only the distal end of the spine is preserved, the length of the fin 

 can not be determined, but judging from the width near the middle 

 portion, it must have been larger than P. gladius Cope, which makes 

 it probably the largest member of the family Protosphyrcenidn; 

 S. Woodward. 



The spine is made up of parallel rods of bone, closely placed. 

 Near the center of the fragment there are about twenty-live of these 

 and probably more in life, as the posterior border is broken 

 away and the exact number can not be determined. These are 

 broad in the central portion, and become more narrow toward the 

 distal extremity where the spine seems to be regularly rounded on 

 the end. Toward the anterior border the rods become much thicker 

 transversely and the. border forms a rather blunt cutting edge, dif- 

 fering from P. gladius in this respect where the margin is acute. 

 This border is somewhat irregularly notched, the notches seeming 

 to be more pronounced than in the species just mentioned, and are 

 covered with a coating of enamel-like substance. 



Measurements: p. yiy^s. p. glaiUm* 



Total length of fragment 49 mm mm 



Width near middle 195 " 175 " 



Thickness: posterior, near luiddie 15 " 12 '* 



" anterior, '• " 30 " 



EMPO COPE. 



Empo lisbonensis, ep. nov. 



This species is established on tlie left premaxilla of a single in- 

 dividual, found by myself, near the type of the species described 

 above, and is in a fair state of preservation. It indicates a fish of 

 about the size ef E. nepceolica Cope. 



The premaxilla is much more depressed than in the species 

 just mentioned, but broader across the alveolar portion, thus giv- 

 ing the bone a very robust appearance when seen from below. 

 The anterior extremit}'' is probably not so acutely pointed as in the 

 other species of this genus. None of the teeth are preserved com- 

 plete, but there are alveolae present which show that there was an 

 outer row of large and an inner row of small ones. Those of the 

 outer row are reduced in size toward the distal extremity and may 

 entirely disappear before the end is reached, as there are no tooth- 

 scars on this portion. At the posterior end of the internal row 

 there is a very large tooth, back of which is a broad, shallow pit. 



♦Measurements takeu frum Cope's description. Cret. Vert.. West. p. 244 F. 



