66 FAMILY III. — CORIMEL^ENID/E. 



1>I>. Hind tibiae without spines on posterior dorsal face, rarely with 



minute setulae present; horny costal margin of elytra acute at 



apex. 



e. Smaller, length less than 2.7 mm.; genital plate of male wholly 



black. 32. harti. 



ee. Larger, length, 3 — 4 mm.; genital plate of male yellowish along 

 the upper margin; hind tibiae with one or two weak setulae on 

 the posterior dorsal face. 33. agrella. 



28 (29). Corimel^na anthracina Uhler, 1876, 270. 



Broadly ovate. Black, strongly shining; antennae reddish-brown; 

 legs piceous, the tarsi paler. Head rather coarsely, densely, confluently 

 punctate. Pronotum nearly twice as wide at base as long; disk rather 

 strongly convex, finely, evenly punctate, more densely so on sides; 

 nodules above hind angles smooth, the side margins reaching their 

 front. Scutellum more finely and sparsely punctate, the sides at base 

 more coarsely so. Other characters as in key. Length, 4.5 — 4.8 mm. 



Dilley, Ore., (Barber). Malloch (1919, 213) records a 

 specimen from Lake Superior in the Urbana collection. Ranges 

 from there and Nebraska west to the Pacific. 



29 (34). Corimel^ena lateralis (Fabricius), 1803, 142. 



Broadly oval, convex, but slightly narrowed behind. Black, shining; 

 costal border of elytra edged with yellowish-white, usually for nearly its 

 entire length, but often only near apex ; ends of sixth ventral and, in 

 female, of genital segment, similarly edged with ivory-white; antennae 

 reddish-brown, the apical joints darker ; beak dark reddish-brown ; tarsi 

 paler. Head triangular, one-half wider than long, apex obtuse; cheeks 

 scarcely margined, finely, densely and deeply punctate, slightly shorter 

 than tylus. Pronotum sparsely, unevenly, finely punctate on disk, the 

 sides densely and more coarsely so, the base almost smooth; humeri 

 prominent, tubercular, with a vague depression before and a deeper one 

 behind their base. Scutellum with a faint wide shallow impression behind 

 each basal angle, this and the sides rather coarsely and closely punctate, 

 disk finely, very sparsely and shallowly punctate. Corium nari-ow, finely 

 punctate, its apex acute. Abdomen finely, densely striate-punctate on 

 sides, much more sparsely punctate at middle; prothoracic pleura 

 coarsely and closely punctate. Spines of all the tibiae short and weak. 

 Basal genital plates of female as broad as long. Length, 3.5 — 4.2 mm.; 

 width, 2.7 — 3 mm. 



Marion, Jennings and Crawford counties, Ind., scarce. 

 May 6 — July 30. Occurs on weeds and tall grass in the vicinity 

 of water. Dunedin, Ft. Myers and Chokoloskee, Fla., Nov. 22 — 

 April 27; occurs in numbers throughout that State. About 

 Dunedin it is found in spring on ferns in dense hammocks and 



