32 



ROYAL SOCIETY OF CANADA 



described species from the United States or elsewhere. Following the 

 faunal lists is a short bibliography containing the more important 

 references to the vertebrate species of Canada. 



Summarizing the species in their several classes we have the fol- 

 lowing result: — 



No. of 

 species. 



Agnatha 8 



Pisces 72 



Amphibia 39 (of ichicJi 21 are tracks.) 



Reptilia 35 



AvES 3 



MAMilAilA 28 



Total 185 



From this it is seen that the fishes far outnumber the other forms ; 

 the reptiles come second and the mammals third. As most of the tracks 

 were probably made by the amphibians the latter may be supposed to 

 number about eighteen. 



Or grouping the various species according to their geological age, 

 thus : — 



No. of 

 species. 



SlLUEIAN 2 



LoWEE Devonian 16 



Upper Devonian 17 



Lower Carboniferous 11 {of ivhich -i are tracks.) 



(Jaebonifeeous. Millstgne Grit — 1 Track 



Carboniferous. Coax Measures 42 {of ichich IG are tracks.) 



Triassic 1 



Cretaceous. Niobeai;a-Benton 4 



Cretaceous. Belly River 39 



Cretaceous. Nanaimo 3 



Cretaceous. Foet Pierre 2 



Cretaceous. Edmonton 1 



Mesozoic 1 



Tertiary 1 



Oligocène 25 



TERTIARY (Ï Oligocène) 2 



Pleistocene 17 



we find that the faunas of the Lower and Upper Devonian, the Upper 

 Carboniferous, the Belly Eiver and Oligocène rocks are greater, in the 

 number of their contained species, than those of the other horizons 

 (with the exception of the Pleistocene), a result partly to be accounted 

 for by the fact that special attention has been given at various times 

 to these rocks as exposed at Campbellton, Scaumenac bay, the Joggins, 



