TRIBE III. — CORISCINI. 265 



brane dark without fuscous spots; claspers of male twisted, not 

 curved; lateral plates of female genitalia acute at apex. 



194. EURINUS. 



bb. Head and pronotum with few if any erect hairs; basal half of pro- 

 notum brown, very finely and sparsely punctate; membrane pale 

 with vague fuscous spots; claspers of male curved, divaricate at 

 base, convergent at tip; lateral plates of female genitalia broadly 

 rounded at apex. 195. conspersus. 



««. Pronotum with humeral angles acute, the side margins calloused and 

 pale. 196. pilosulus. 



194 (323). Coriscus eurinus (Say), 1824, 324; II, 247. 



Elongate, slender, depressed above, subconvex beneath. Color above 

 variable from nearly wholly black to largely fuscous-brown, in the for- 

 mer (var. obesus Fracker) with head, pronotum, scutellum, under sur- 

 face and femora black, shining, with a bluish-bronzed tinge; elytra fus- 

 cous-black, subopaque; connexivum black, each segment with a small 

 orange-yellow spot near front angle ; antennae fuscous-brown, the basal 

 joint and tips of joints 2 and 3 darker; tibiae fuscous-brown, darker near 

 apex; tarsi black, the basal joint in great part paler; in the more com- 

 mon typical form the elytra and tibiae are brownish-yellow more or less 

 tinged with fuscous. Head finely and densely punctate ; antennae with 

 third joint a little shorter than second, the two united but little longer 

 than fourth. Pronotum with carinas of side margins distinct only on 

 basal half; disk subconvex, but little narrowed in front, in great part 

 rather coarsely, deeply and very densely punctate and with a small me- 

 dian impression on apical third; hind margin sinuate. Scutellum feebly 

 convex, coarsely, not densely punctate. Elytra finely and sparsely punc- 

 tate. Abdomen slightly dilated at middle, the connexivum rarely nar- 

 rowly exposed. Length, 11 — 15 mm.; width, 2.3 — 3 mm. 



Common throughout Indiana, more so in the northern coun- 

 ties, June 3 — Oct. 1. Taken most frequently on foliage and 

 flowers of Jersey-tea and other plants growing along the high, 

 dry sandy margins of streams and lakes. In autumn often 

 found crawling along the pathways in such places. A number 

 were once taken, June 7, from the dried skin and other remains 

 of a dead cow on a sandy hillside, and McAtee (1919, 8) also 

 mentions them as found in Virginia on carrion. Dunedin, Fla., 

 April 2, one specimen swept from weeds. Known heretofore 

 from that State only by the single record of Montandon. 



Ranges from Quebec and New England west to the Pacific 

 and south to Florida, Georgia and Texas, but apparently much 

 the more common north of latitude 38°. As noted in descrip- 

 tion, it varies much in color, the larger females often almost 

 wholly black. It is easily separated from conspersus by the char- 

 acters given in key, even by the sculpture and hairs of pro- 



