..The fishes of Illinois . Rio Grande. It is everywhere commonest inponds and lowland streams. Dr. C. C. Abbott, of New Jersey, foundit in shallow weedy streams, in water scarcely two inches deep,and caught examples with a baited hook, which, in spite of theirsmall size, they seized with the quickness and voracity of a pike. Three specimens of this species from southern Illinois had fed,like the darters generally, on larva; of gnats and May-flies, abouttwo thirds of the latter to one third of the former. Females containing full-sized eggs were taken by us April 28. MICROPERCA 317 Genus MICROPE
..The fishes of Illinois . Rio Grande. It is everywhere commonest inponds and lowland streams. Dr. C. C. Abbott, of New Jersey, foundit in shallow weedy streams, in water scarcely two inches deep,and caught examples with a baited hook, which, in spite of theirsmall size, they seized with the quickness and voracity of a pike. Three specimens of this species from southern Illinois had fed,like the darters generally, on larva; of gnats and May-flies, abouttwo thirds of the latter to one third of the former. Females containing full-sized eggs were taken by us April 28. MICROPERCA 317 Genus MICROPERCA Putnam Body short and stout; mouth small, slightly oblique; premaxillariesnot protractile; vertebrae (M. punctulata) 30 (16+20); differing fromEtheostoma only in the almost or complete absence of the lateral line;the vertebra? and fin rays fewer than in other darters, and the scaleslarger than in most species. Size extremely small, the smallest of thedarters; coloration plain; species few, or perhaps not more than Fig. 76MICROPERCA PUNCTULATA Putnam(least darter) Putnam, 1863, Bull. Mus. Comp. Zool., I, 4. J. & G., 523; M. V., 134 (Etheostoma microperca); B., I, 87 (Etheostoma micro-perca); J. & E., I, 1104; N., 34; J., 43; F., 64; F. F., I. 3, 24; L., 29. Length 1 to 1^ inches; body not much elongate, compressed, theback moderately arched; depth to ; greatest width about \ ofgreatest depth; depth caudal peduncle to Coloration oliva-ceous, the sides closely speckled and with vague bars and zigzag mark-ings ; second dorsal and caudal barred; dark streaks radiating from eye;a dark humeral spot (Jordan and Evermann):. Head bluntly rounded,3 . 6 to 4; width of head 1. 9 to 2 .2 in its length; interorbital space ;eye to ; nose to ; mouth terminal, oblique, maxillary tomiddle of orbit, cleft 3 . 5 to 4 in head; jaws equal; gill-membranes scarcelyconnected. Dorsal VI, 9; spinous and soft dorsals separated by a spaceabout equal to pupil; anal
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Keywords: ., bookcentury1900, bookdecade1900, bookidcu31924, booksubjectfishes
