208 CONTKir.UTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 
broad, ivacliiii”’ Just about to the anterior margin of eye; therefore, 
aitparently longer than in the next, owing to the shortness of the snout. 
iMaxillary contained I times in the length of the head ; mandible 3 times. 
3Iouth Jnferior. Eye fij in head. Adipose tin very large, extending 
behind anal. Depth 4^ in length ; head tj. D. 11-14; A. 11; scales 
8-74 to 88-7. (lill-rakers short and thick, shorter than pupil; about 
Hi below the angle. Clear streams and lakes from the EocUy Mount- 
ains to the I’acilic; abundant in the tSierra, Nevada. An excellent 
Ibod-lish; variable. 
(Giranl, I’roc. Acad. Nat. Sci. I'liila. 185G, 133; Giiiither, vi, 187.) 
•JHJ'i. <3iiild3’i3;it4*a*:ilas Richardson. — Pilot-fmh", Menomonee White-fish ; Shad 
Wa i ter; lion n d-Jish . 
Eody elongate, not elevated nor much compressed, the back rather 
broad, the form more terete than in any of the other species. Mouth 
veiy small and narrow, inferior, the broad maxillary not reaching to 
opposite the eye, in head. Head long, the snout compressed and 
bluntly pointed, its tip not below level of eye; profile not strongly de- 
curved. Ereorbital wider than i)npil. Mandible originating under mid- 
dle of eye, in head. Adipose tin small, (lill-rakers short and stoutish, 
but rather longer than in C. u'illiamsoni. Head 5 in length ; depth 4-|. 
1). 11; A. 10; scales 0-80 to 00-S. Color dark bluish above, sih'ery 
below. Lakes of New Hampshire, Ui)per Great Lakes, northwestward 
to Alaska; abundant in cold, deep waters. 
(Richard-son, Franklin’s Jnnrn. 1823, 714; Giintlicr, vi, 17(5: Coregonus norce-anglicB 
Prescott, Aincr. Journ. Sci. Arts xi, 342, 1851: Coregonus nova’-angliw Giiuther, vi, 180.) 
■ISO. C. kOBiEiECOlti Milner, MSS. sj). nov. 
Lody oblong, elliptical, the back not greatly elevated. Head very 
short and deep, the snout bluntly deeurved and not projecting, the 
depth of the head at the nape greater than the distance from the end of 
the snout to the opercular margin. INEouth not inferior, the jaws almost 
e(pial; maxillary extremely short and broad, not quite reaching to the 
eye, its length 5i in head, its supplemental bone broad-ovate, broader 
than in dupciform is. Gill rakers as in C. quadrilateralis. Preorbital 
rather broad. Color iiale, as \n dupeiformiH. Head 5;^ in length. 1). 
11; A. 13; scales lO-hO-lO. Types Nos. 8971 and hhOO of the United 
States National iMuseum from Fort Good Hope, British America, and 
Yucon Iviver, Alaska, resi)ectiv(dy. A strongly marked species, well 
distinguished among the American forms by the very obtuse head, but 
perhaps identical with some Siberian si)ecies. 
