C. B. Eastman — Upper Devonian Fish Remains. 255 



boiclal median ventral is relatively smaller, and the surface 

 ornamentation of all the plates is finer and of different pattern. 

 The appendages, too, are longer, and more tapering distally. B. 

 major has- ttie median ventral larger and more exposed than 

 in any known species, its outline being sometimes polygonal 

 or slightly rounded (fig. 3). The remaining species of Both- 



Fig. 2. — Bothriolepis major (Ag.). x f„ 



riolepis are excluded from comparison with the new form, 

 which may be known as B. coloradensis, by reason of their 

 smaller size, or nature of their superficial ornamentation. 



The ornament of B. color adensis, though by no means so 

 well preserved as one might wish in the Kockwood specimens, 

 is clearly of the tuberculate order ; here and there the tuber- 

 cles appear to be more or less confluent, bnt nowhere do they 

 fuse into vermiculating ridges, as in other American and some 

 foreign species. The center of ossification in the posterior 



