MUSQUAN KIVEK WHITE-FISH. 881 



94. CoEEQONus LABEADORiccs Richardson. 



musqnan River M'^hite-fish ; I^abrador IThite-fish; "Whiting" of 

 Liake W^innepiseog^ee. 



Coregonus labradoricua, Eichardson, Fauna Boreali-Amer,, iii, 1836, 206.— Gonthur, 



Cat. Fishes Brit. Mus,, vi, 176, and of authors generally. 

 Coregonus neohantordensis, Prescott, Amer. Joarn. 8oi. Arts, xi, 1851, 342, 



Description, — Body rather elongate, compressed, the back not elevated ; head rather 

 long and slender, compressed ; mouth rather small, the jaws equal, the maxillary reach- 

 ing to'the front of the pupil; maxillary bone broad, rather short, its supplementary 

 piece ovate ; tongue with aboat three series of distinct small teeth; mandible reaching 

 middle of eye; eye large, 4{ in head; supraorbital bone long and rather narrow; 

 bluish black above, silvery below ; scales with dark pnnctnlations ; fins all dusky ; dor- 

 sal fin high in front, the last rays short; gill rakers slender; head 4} in length; depth 

 4} ; D. 11 ; A. 11 ; scales 9-30-8. Length about 15 inches. 



Habitat, Great Lake Begion to the Adirondacks, White Mountains and northward, 

 in cold, clear lakes. 



Diagnosis. — This species may be known from the Common White-fish 

 by its slenderer body, larger mouth and evidently stout small teeth, the 

 form of the mouth readily separates it from the " Lake Herring " and its 

 relatives. 



Habits. — Little distinctive is recorded of the habits of this species. It 

 is very abundant in Canada and northern New England, but I have 

 seen no specimens from Lake Erie, and do not know that it occurs there. 

 It is said to rise to the fly in the Canadian Lakes. 



95. CoBEGONDS HOYi (Gill) Jordan. 



Lake moon-eye; Cisco of Lake mighigan. 



Jirgyroiomus hoyi, Gill, MSS., Hoy, Trans. Wis. Acad., 1873, 100 (name only) — Jordan, 



Amer. Nat., March, 1875, 135.— Milnkr, Eept. U. S. Fish Com'r for 1872-3, 86. 

 Coregonus hoyi, Jordan, Man. Vert., 2d Ed., 1868, 275. 



Body rather elongate, compressed, the back somewhat elevated ; head rather long, in 

 form Intermediate between Coregonus and Argyrosomut ; mouth rather large, terminal, 

 the lower jaw evidently shorter than upper, even when the month is open; tip of muz- 

 zle rather bluntly trancate ; maxillary reaching to opposite middle of pupU, about 6 in 

 head; mandible extending to posterior margin of pupil; supraorbital narrow ; suborb- 

 ital rather broad; premaxUlary on level of lower part of pupil; preorbital narrow; 

 pseudobranchise very laige ; fins low, the free margin of the dorsal very oblique ; eye 

 very large, 31 in head ; tongue with traces of teeth ; gUl-rakers slender, about 

 25 below angle, rather long, nearly as long as eye; color bluish above, sides 

 and below rich silvery, brighter than in any other of our Cortgoni, much as in Hyodon 

 and Albula; lateral line almost straight ; head4i; depth 4f; B. 10; A. 10; scales 7-75-7. 

 Length 7 or 8 inches ; weight rarely more than half a pound. 



56 



