..The fishes of Illinois . warm. Itis found throughout the state, frequently in company with the pre-ceding species of the same genus, from which it scarcely differs appre-ciably in local distribution, in habits, or in food. According to ourdata, derived from 183 collections, it is less common than annularisin creeks, and has perhaps a noticeably stronger preference for waterwith a hard bottom. We have also found it more abundant in theglacial lakes of northeastern Illinois, from some of which, indeed, wehave not taken annularis at all. Its general range carries it northward beyond the precedi
..The fishes of Illinois . warm. Itis found throughout the state, frequently in company with the pre-ceding species of the same genus, from which it scarcely differs appre-ciably in local distribution, in habits, or in food. According to ourdata, derived from 183 collections, it is less common than annularisin creeks, and has perhaps a noticeably stronger preference for waterwith a hard bottom. We have also found it more abundant in theglacial lakes of northeastern Illinois, from some of which, indeed, wehave not taken annularis at all. Its general range carries it northward beyond the precedingspecies, and it is reported from the Ottawa River, in Canada, andfrom the Lake of the Woods. Its food, according to our observations, is substantially identicalwith that of annularis, except that 11 specimens examined had takena larger percentage of both Entomostraca and of fishes, and a smallerone of aquatic insects. These differences of ratio are, however, verylikely local and seasonal. *See note on preceding S Oh< u u < CENTRARCHUS ROUND SUNFISH 241 The common names of this species most used in Illinois are blackcrappie, calico bass, and strawberry bass, the first in central Illinoisand the others in the northern part of the state. It does not reach as large a size as the white crappie, the largestspecimens taken weighing not much over \\ pounds. The species spawned in May at Havana in 1898, and specimenstaken as early as April 19 yielded eggs and milt under pressure. This crappie has been successfully introduced into France. Itshardy endurance of both heat and cold, and also of foul water, isespecially favorable to its transportation and acclimatization. Thestatistics of the catch of the black crappie from the Mississippi andthe Illinois are included under those of the preceding species. Genus CENTRARCHUS Cuvier and Valenciennes (round sunfish) Body short and deep, compressed; opercle emarginate behind; mouthlarge; maxillary with a supplemental bone; teeth
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Keywords: ., bookcentury1900, bookdecade1900, bookidcu31924, booksubjectfishes
