298 



BULLETIN OF THE BUREAU OP FISHERIES 



Page 



Species of Coregonidse in the Great 

 Lakes — Continued 

 Descriptions of the Coregonidse in the 



Great Lakes 340 



Genus Leucichthys 340 



Leucichthys johannse 348 



Lake Michigan 349 



Lake Huron 355 



Leucichthys alpense 363 



Lake Michigan 363 



Lake Huron 370 



Leucichthys zenithicus 377 



Lake Superior 378 



Lake Nipigon 385 



Lake Michigan 388 



Lake Huron 394 



Leucichthys reighardi 399 



reighardi of Lake Michigan 400 



dymondi of Lake Nipigon 406 



dymondi of Lake Superior 409 



reighardi of Lake Ontario 413 



Leucichthys nigripinnis 416 



nigripinnis of Lake Michigan 417 



nigripinnis of Lake Huron 422 



cyanopterus of Lake Superior... 425 



regalis of Lake Nipigon 430 



prognathus of Lake Ontario 433 



Leucichthys kiyi 434 



kiyi of Lake Michigan 434 



kiyi of Lake Huron 439 



kiyi of Lake Superior 442 



orientalis of Lake Ontario 445 



Leucichthys hoyi 449 



Lake Michigan 449 



Lake Huron 457 



Lake Superior 466 | 



Page 



>ecies of Coregonidse in the Great 



Lakes — Continued. 

 Descriptions of the Coregonidse in the 



Great Lakes — Continued. 

 Genus Leucichthys — Continued. 

 Leucichthys hoyi — Continued. 



Lake Nipigon 470 



Lake Ontario 472 



Leucichthys artedi 476 



artedi and albus of Lake Erie 478 



artedi of Lake Michigan 484 



artedi and artedi manitoulinus 



of Lake Huron 490 



artedi and artedi albus of Lake 



Superior 499 



Lake Nipigon 505 



artedi and artedi albus of Lake 



Ontario 507 



Leucichthys nipigon 513 



Genus Coregonus 515 



Coregonus clupeaformis 515 



Lake Michigan 516 



Lake Huron 523 



Lake Superior 529 



Lake Nipigon 533 



Lake Erie 535 



Lake Ontario 541 



Genus Prosopium 543 



Prosopium quadrilaterale 544 



Lake Michigan 544 



Lake Huron 549 



Lake Superior 553 



Lake Nipigon 555 



Lake Ontario 556 



es 557 



ography g32 



GENERAL REMARKS 



THE COREGONID FISHES 



The family Salmonidse, as formerly constituted, contains less than 100 species, 

 which are distributed in the temperate and arctic regions. In the systematic ar- 

 rangement formerly followed by ichthyologists it was divided into two subfamilies— 

 the Coregoninse and the Salmoninse. Cope (1872) thought that the differences 

 between the two types of fishes concerned were sufficiently marked to place them in 

 separate families. Accordingly, he proposed the family Coregonidse for those fish 

 of the group with united parietals and retained Salmonidse for those with parietals 

 separated by the supraoccipital. Gill (1895) believed that Cope was wrong in his 

 observation that the parietals were united in Coregonus, reduced Coregonidse to 

 subfamily rank, and combined it with Salmoninse under the Salmonidse. Regan 

 (1914) retained these subfamilies but not the characters on which Gill based them. 

 Regan's Coregoninse are Salmonidse with "parietals meeting in the middle line; 



