..The fishes of Illinois . kish; belly satiny whitish; a dusky vertical bar behindopercle; males with a dark cross-bar through middle of dorsal and analand a vertical bar at base of caudal, especially conspicuous in spring,when the rest of each fin is fiery red and the snout and sometimes almostthe entire body covered with tubercles; females sometimes with a faintdusky cross-bar on dorsal, the anal and caudal plain; young with more orless pinkish to purplish on body. Head subconic, little compressed, 4 in length, its width in its length to 2 ; interorbital space very littleconvex, 2.
..The fishes of Illinois . kish; belly satiny whitish; a dusky vertical bar behindopercle; males with a dark cross-bar through middle of dorsal and analand a vertical bar at base of caudal, especially conspicuous in spring,when the rest of each fin is fiery red and the snout and sometimes almostthe entire body covered with tubercles; females sometimes with a faintdusky cross-bar on dorsal, the anal and caudal plain; young with more orless pinkish to purplish on body. Head subconic, little compressed, 4 in length, its width in its length to 2 ; interorbital space very littleconvex, to in head, usually less than 3; eve small, circular, in head, situated forward of middle of head and nearer its upper thanunder surface; nose to , the muzzle moderately decurved, over-hanging the rather large and horizontal mouth; maxillary to inhead, reaching scarcely back of vertical from posterior nostril; lower jawWholly included; upper lip quite fleshy; breadth of isthmus to lid. § dw o °r <A OHto CAMPOSTOMA STONE-ROLLERS 111 times diameter of orbit. Teeth 4-4 or 1, 4-4, 0, with oblique grindingsurface without terminal hooks, or with only a slight one on one or twoteeth; intestine 5 to times length of head and body; peritoneum fin with 8 rays, set slightly behind ventrals and nearly midwaybetween muzzle and base of caudal; longest dorsal ray to in head;anal rays 7 ; pectorals about §,to ventrals, to in head, ventrals fall-ing quite short of vent in males, reaching or almost reaching it in rather small, 6-8, 46-53, 6--8, more or less crowded forward, thecrowding scarcely noticeable in females but very evident and often con-spicuous in old males; scales on breast very small, about 15 transverseseries between pectorals; scales before dorsal 15 to 26; lateral line complete. This is a species of wide distribution occurring in the Great Lakeregion, along the south Atlantic slope to the
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Keywords: ., bookcentury1900, bookdecade1900, bookidcu31924, booksubjectfishes
