VERTEBRATES. 1 8 1 



Ch. angularis, N. and W. Coal Measvires. 

 Ch, molaris, N. and W. Sub-carboniferous. 

 Ch. frmltipUcatus, N. and W. Sub-carboniferous. 

 Ch, costatus, N. and W. Sub-carboniferous. 

 Ch. elegatis, N. and W. Sub-carboniferous. 

 Ch. lor if annus, N. and W. Sub-carboniferous. 



Family CESTBACIOIVTID^:. 



Genus ORODUS, Ag. 



0. midticarinatus, N. and W. Sub-carboniferous. 

 0. plicatus, N. and W. Sub-carboniferous. 

 O. elegantulus, N. and W. Sub-carboniferous. 

 0. ornatus, N. and W. Sub-carboniferous. 

 0. tuberculatus, N. and W. Sub-carboniferous. 

 0. mammUaris, N. and W. Sub-carboniferous. 

 0. minusculus, N. and W. Sub-carboniferous. 

 0. minutus, N. and W. Sub-carboniferous. 



Genus HELODUS, Ag. 



H. biformis, N. and W. Sub-carboniferous. 

 H. elytra, N. and W. Sub-carboniferous. 

 H. coniculus, N. and W. Sub-carboniferous. 

 H. compressus, N. and W. Sub-carboniferous. 

 H. carboitarvm, N. and -W. Coal Measures. 

 H. sulcatus, N. and W. Sub-carboniferous. 

 H. crenulatus, N. and W. Sub-carboniferous. 

 H. denticulatus, N. and W. Sub-carboniferous. 

 H. nobilis, N. and W. Sub-carboniferous. 

 H. consolidatus, N. and W. Sub-carboniferous. 

 H. politus, N. and W. Sub-carboniferous. 

 H. undulatus, N. and W. Sub-carboniferous. 

 H. Umax, N. and W. Sub-carboniferous. 



