48 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY—II 
Size much less than that of S. vitreum.’ The largest specimens seen 
by me were about fourteen inches in length. The accompanying figure 
represents the stomach and pyloric ceca of one of these. 
Habitat.—Lake Erie, Ohio River, and southward to Georgia. 
32. STIZOSTETHIUM (CYNOPERCA) CANADENSE, (C. H. Smith) 
Jordan. 
Sauger—Gray Pike—Sand Pike. 
? Lucioperca canadensis, C. H. Smiry, MSS. (1834).—Grirriry’s Cuvier’s Animal King. 
dom, X, 275.—RICHARDSON (1836), Fauna Bor.-Am. Fishes, iii, 17—DkE Kay 
(1842), N. Y. Fauna, Fishes, 19.—SToRER (1846), Synopsis, 276.—GUNTHER 
(1859), Cat. Fishes, i, 75.—JORDAN (1877), Klippart’s Report, 225. 
? Stizostedium canadense, JORDAN (1876), Man. Vert. 225.—JorDAN & COPELAND 
(1876), Check List, 136. 
Lucioperca grisea, De Kay (1842), N. Y. Fauna, Fishes, 19.—SToreEr (1846), Synopsis, 
276.—GUNTHER (1859), Cat. Fishes, i, 76.—JORDAN (1874), Ind. Geol. Sury. 212. 
Stizostedium griseum, MILNER (1875), Rept. U. S. Fish Com. 1872-3.—JoRDAN 
(1876), Man. Vert. 225.—NELSON (1876), Bull. Ills. Mus. Nat. Hist. 36.—Jor- 
DAN & COPELAND (1876), Check List, 136. 
Lucioperca borea, GRD. (1857), Proce. Acad. Nat. Sci. Phila. Nov. (not Okow or Horn Fish 
of Richardson, which is 8S. vitreuwn). 
Stizostedion boreus, GRD. (1858), Pac. R. R. Survey, x, 31. / 
Stizostedium boreum, JORDAN & COPELAND (1876), Check List, 156. 
I have never seen a specimen of the Sauger with the opercular spines 
exactly as represented in Smith’s figure of his canadensis. I find, how- 
ever, much variation in this respect, and I have seen specimens with 1, 
2, 3, and 4 spines ; and also specimens with the two sides unlike. Until 
it is known that there is a second species of Sauger in our waters differ- 
ing from grisewm by the constant presence of four opercular spines, it is 
safest to-unite griseum and canadense. 
The types of Stizostedion boreus Girard are preserved in the United 
States National Museum, and seem to be the common “Sauger”, S. 
canadense. Part of Dr. Girard’s description of this species is borrowed 
from Richardson, and applies to S. vitrewm. 
Body most elongated, more terete than in Stizostethiwm proper, with 
the back scarcely compressed, so broad that the lateral line may be 
seen in a view from above, the back somewhat angulated as it de- 
scends to the sides, the depth of the body 44 to 5 in length. 
Head quite pointed, about,3$ in length, the slope of the profile greater 
than in Stizostethium. Eye smaller, 5 to 5} in head in adult; mouth 
rather smaller, the lower jaw included ; maxillary reaching to opposite 
posterior margin of eye. 
