Cope.] 4o0 [i;ov. 15, 



Panttlcs coicODUs, sp. nov. 



An injured anterior half of a cranium represents this species. The right 

 dental series is tolerably well preserved, so that the forms of the dental 

 crowns can be determined. The left dental series is partially preserved. 

 The superior surface of the muzzle has been destroyed, so that the forms 

 and positions of the orbits and nares cannot be distinguished. 



The right dental series includes eleven teeth, which are of subequal 

 dimensions. The crowns are robust and somewhat swollen at the middle, 

 and with a small median subacute apex. The matrix covering the palate 

 is rather hard, and in removing it only three internal teeth were detected. 

 Two of these are near themaxillaries, and just within the last and the pen- 

 ultimate respoclively. The third is opposite the antepenultimate maxillary 

 and is as far interior to it as the length of the last three maxillaries. This 

 and the posterior palatine teeth are as large as the maxillaries, the other 

 is smaller. The crowns have the same form as those of the maxillary 

 series. 



This species is of about the dimensions of the P. cordaius, but the pala- 

 tine teeth are less numerous, and less closely placed. The inequality in 

 size of the maxillary teeth characteristic of the P. cordatus is not seen in 

 the P. Co'icodus, and the form of the crown, in the two species is distinct. 

 Those of the P. cordatus are obtuse, and without the little apex of the 

 new species. In the latter the dental crowns have nearly the form of the 

 seeds of the grass, Coix lachryma. 



Accompanying the specimen above described is a fragment of appar- 

 ently a dentary bone, which supports eight leeth and parts of teeth. The 

 crowns stand on shanks which rise above the external parapet of the jaw, 

 but have a deeper attachment on the inner side, being thus partially 

 pleurodont. The crowns are swollen at the base as in the maxillary teeth, 

 but the apices are more produced, being regularly conic. The apices 

 are all lost. These teeth belong to a rather larger animal than the one 

 above described, and perhaps to another species. 



Measurementa. 

 Length of a series of eleven maxillary teeth 37 



Diameters of the crown of a maxillary tooth \ ° " " * „ 



c transverse 3 



Distance from ninth tooth to anterior palatine 6 



Htpopnous Cope, gen. nov. 



Nostrils on the inferior aspect of the muzzle. Mouth posterior. Teeth 

 few, with compressed crowns. Cranial bones sculptured. Frontal bone 

 bounding the orbit above. 



This genus displays in this family the character found in Lepidosternum 

 and other genera among the AmphisbaMiidie. The large superiorly placed 

 orbits and inferior posterior mouth indicate that the animal lived in some 

 locality where upward vision was important, while its food was below it. 



