38 The Ohio Naturalist. [Vol. IV, No. 2, 



The head wide, antennae very robust, joint 2 a little longer than joint 5, 

 about equally thick, 4th joint smaller, shorter than third. 



Pronotmn rounded on the margin, surface coarsely granulate and with four 

 elevated ridges on the disk, the outer ones not reaching the anterior margin. 

 Scutellum with sides parallel at base. Klytra moderately dilated at base, not 

 reaching end of abdomen. Beak reaching middle of mesosternum. Color 

 dull fuscous or blackish, a ring near the tip of tibiae and the base of the tar- 

 sal joints slightly paler. 



Wideh' distributed over the United States but has been taken 

 in Ohio only in Columbtts and Cincinnati. Other records place it 

 in Iowa, Canada, Mass., N. J., N. Y., Md.. 111., Wis. and Minn. 



It is at once separated from other native species with thick 

 antennae b}' the dull fuscous or blackish color. 



Aradus ornatus Say. 



Aradiis oi-uattts &B.y. Heterop. Hera. (1831), p. 21. Coll. Writ. I, 352. Bergroth, Proc. Knt. 

 Soc. Wash. II, 332 and 335. 



Antennae robust, third joint largest, second longest. Rusty brow'u with 

 yellow spots. I,en,gth, male, 5 mm.; female, 6 mm. 



Head broad, the antennae much swollen, joint one short, two longest "and 

 considerabh- swollen, three about half as long as two and equalh' thick, four 

 smaller. Heak reaching to middle of prosternum. Pronotmn with lateral bor- 

 ders strongly curved, edge roughened but not dentate, disk with distinct 

 rugo.sities and three conspicuous glabrous spots on hind border. Scutellum 

 triangular. Base of elytra strongly dilated. Abdomen reddish with pale 

 margin bordered with black. Genital lobes with a transverse light yellow 

 spot. 



So far this species has been recorded from Indiana, Pennsj^va- 

 nia, and Cincinnati, Ohio. 



A handsome species, described in 1831 from Indiana, and 

 for a long time unrecognized, but Bergroth called attention to it a 

 few years ago, his specimen being credited to Pennsylvania. 

 (Montandon collection.) 



Recently Mr. Dury has collected it at Cincinnati and kindly- 

 placed three excellent specimens of males and, later, one female 

 in my hands for study. (Ohio Naturalist, IV, p. 22.) 



Aradus duzei Bergroth. 



Aiadiis duzei Bergroth. Proc. Knt. Soc. Wash. II, p. 333. 



Resembles omati/s but lacks the poli.shed spots of the hind bor- 

 der of prothorax. Fuscous with light yellowish markings. 

 Length, male, 6 mm.; female, 6.5 mm. 



Head broad, antennae robu.st but less dilated than in ornatus, joint two 

 longest, three about two-thirds of two, scarcely as thick. 



Margin of ])rothorax subangulate, the disk with four rough carinae. 



Klytra dilated at base, barely reaching tip of abdomen, suffused with yel- 

 lowish on basal third, membrane brown, veins concolorous. 



