THE FISHES OF GEORGIAN BAY 

 SESSIONAL PAPER No. 39b 



ANALYSIS OF THE SPECIES. 



The total number of species here recognized is 48, representing 37 genera 

 and 20 families. The number of species reported from Canadian localities, and 

 including only fresh water forms, has been estimated by Evermann and Golds- 

 borough ('07) at 145, representing 67 genera and 25 families. Probably more 

 than one-third of the total number for Canada will be found either in Georgian 

 Bay or in the streams entering it. 



The majority of the families are represented by single species, the largest 

 number of species belonging to a single family being 10 (CyprinidcB) . The com- 

 plete list of families with the number of species representing them is as follows : — 



Petromyzontidce 2 



Polyodontidce 1 



Acipenseridoe 1 



Lepisosteidce 1 " 



Amiidce 1 



Siluridce 2 



CatostomidcB 3 



Cyprinidce 10 



AnguillidcB 1 



Salmonidce 7 



UmbridcB 1 



Luciidce 2 



PoeciliidoB 1 



Gasterosteidcc 1 



Percopsidce 1 



Atherinidce 1 



Centrarchidce 4 



Percidce 5 



Cottidce 2 



Gadidce 1 



Family Petromyzontid^.* 



(Lampreys) 



Representing the lower order of fish-like vertebrates (Marsipohranchii) , animals 

 with discoidal mouth, parasitic on other fishes. There appear to be two species 

 represented in Georgian Bay, of which one has been collected, while the other 

 is recognized from the evidence cited below. 



Ichthyomyzon concolor, Kirtland. 



(Silver lamprey) 

 (Plate l,fig. 5) 



A number of specimens taken on pike and garpike in running water below 

 the first falls on the Go Home River. Specimens taken during July and August 

 are from 4 to 5 inches in length, a single specimen of 6^ inches. The length of this 



* The classification here employed follows the plan of Jordan and Evermann ('96), but 

 is restricted to the family divisions, ordinal reference being for the most part omitted. 



