Transactions of the Wisconsin Academy of Sciences, Arts and Letters
volume V (1877-1881)
Bundy, Will F.
A list of the crustacea of Wisconsin, pp. -184 PDF (2.0 MB)
182 Misconsin Academy of Sciences, Arts, and Lctters. culate; costate and punctate above, outer one hairy at base; third segment of third thoracic legs hooked; first abdominal legs of male long, bifid, nearly straight, outer ramus longer, recurved, inner ramus more abruptly curved near apex, not enlarged near apex as in C. wisconsinensis; tubercle or inner basal angle small. C. yracidlis (Bundy). Bulletin No. 1, Ill. Mus. Nat. list., 1876. Rostrum short, wide, depressed, toothless, concave above, nearly right-angled in front; cephalothorax laterally compressed, smooth above, granulate on sides; areola wanting; cephalic carinma prominent, ending behind in callosities; antennal plates small and narrow; eyes small; antennae short and slender; toma rounded in front; third maxillipedes hairy on inner lower aspects ; hands large, smooth below, punctate above, stroi toothed on inner margins; fingers slender, gaping at base, pressed, contiguous margins irregularly tuberculate, outer incurved, wide at base, movable one longer, tuberculate on o margin near base; carpus with one large and several small t on inner margin; braehium with two rows of sharp teeth on Ic margin; third joint of third thoracic legs of male hooked; first dorninal legs of male truncate, with several small apical teeth, inner one longest, slender and directed obliquely outward; b of these legs narrow and inserted into deep sinuses in the first dominal segment; interpedal space long, narrow, reaching half from small basal tubercle to apex of legs. The second form male has shorter, less gaping fingers, sm: hooks on third thoracic legs and articulated first abdominal I The annulus of the female is movable, small and round, consists of two half-rings, each of which embraces one end of other. Two tubercules on the anterior border are separated a slight furrow that widens behind, covering the posterior bor It occurs on the prairies in the vicinity of Racine, where it found by Dr. P. R. IHoy, to whose kindness I am indebted specimens. It is also found abundantly along water courses in early sp at Normal, Ill. (Prof. 13orbes).
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