882 FISHES—SALMONIDZA. 
Habitat. Lake Michigan, Lake Superior; one specimen in the National Museum from 
Lake Ontario. Said to occur in small lakes in the interior of Michigan. 
Diagnosis.—This species may be known from the Lake Herring, which 
it resembles in form, by the shortness of itslower jaw, which fits within: 
the upper, as in the White-fish, and by the pure silvery luster of the scales, 
which have none of the dusky punctulations as in the other Coregont. 
Habits.—Little is known of the habits of this Cisco. Dr. Hoy, its dis- 
coverer, writes, ‘“ This little beauty never approaches shoal water, where 
Argyrosomus clupeiformis (artedi) is only found. About 30 or 40 fathoms 
is as near shore as it has ever been captured here.” (Racine, Wisconsin.) 
Prof. Milner observes, ‘‘The Cisco of Lake Michigan, not to be con- 
founded with the Cisco of Lake Ontario, is a fish frequenting the deep 
waters. It is taken in considerable quantities at depths of from 30 to 
70 fathoms, and is the principal food of the Salmon or “ Mackinaw 
Trout.” Prof. Milner further remarks that the depth of 50 fathoms 
‘may be considered in the deeper lakes the zone of the Mackinaw Trout 
and of the Cisco throughout the spring, summer, and fall, with the ex- 
ception, in the case of the Trout, of the spawning season.” 
96. COREGONUS ARTEDI LeSueur. 
Lake Hierring; Wichigan Herring; Cisco. 
Coregonus artedi, LESUEUR, Journ, Acad. Nat. Sci. Phila, 1, 1818, 231.—JORDAN, Man.. 
Vert. 2d Ed., 274. 
Coregonus clupeiformis, DkKay, New York Fauna, Fish,, 1842, 248, pl. 60, f. 198.—Gun- 
THER, Cat. Fish. Brit. Mus., vi, 198, and of many recent authors (not Salmo clu- 
peiformis, Mitch.). 
Argyrosomus clupeiformis, MILNER, Rept. U.S. Fish Comm., 1872-3, 65, and of most rec- 
ent American writers. 
Salmo (Coregonus) lucidus, RICHARDSON, Fauna Bor.-Am., 1&36, iii, 207. 
Salmo (Coregonus) harengus, RICHARDSON, Fauna Bor.-Amer., 11i, 1836, 210. 
Argyrosomus sisco, JORDAN, Amer. Nat,, 1875, 186. (Local variety in lakes of Indiana. 
and Wisconsin. ) 
Body elongate, compressed, little elevated; head compressed, rather pointed; mouth 
rather large, the maxillary reaching about to the middle of the pupil, about 24 in head, 
the mandible 24 in head; preorbital bone long and slender; suborbital broad; supraor- 
bital nearly as long as eye, about four times as long as broad; adipose fins very small ;. 
eye 4 to 5 in head; gill-rakers very long and slender, as long as eye, 25 to 30 below the 
angle; bluish black or greenish above; sides silvery; scales with dark specks; fins 
mostly pale; pectoral and anal dusky-tinged; head 44; depth 44; D.10; A. 11; scales 
8-76-7. Length about a foot. The usual length is rather less than a foot, and the weight: 
9 to 10 ounces. The largest seen are about 19 inches long and two pounds in weight. 
Habitat, Great Lakes and northward to Alaska and Labrador ; very abundant, usually 
frequenting shallow waters. In numerous small lakes in Indiana and Wisconsin (Ge- 
neva, Tippecanoe, Oconomowee, LaBelle, etc.) is the modified var. sisco (Argyrosomus 
sisco, Jordan, Amer. Nat., 1875, 136), which lives in the deep waters, coming into shal- 
low waters to spawn in December. 
