THE CANADIAN ENTOMOLOGIST 



the dorsal genital segment, costal margin of corium moderately 

 ampliated toward the base, veins of membrane narrowly bordered 

 with white. Female dorsal genital segment triangularly narrowing 

 toward the apex, leaving the apical lobes free and separated 'rom 

 them by a fine suture. Discal lobes of the sixth female ventral 

 segment distinctly longer than those of the fifth segment, either 

 lobe considerably longer than broad, rounded at apex, taken 

 together broader than long, first ventral genital segment about 

 half the length of the sixth ventral segment, the apical lobes con- 

 vergent, rounded at the external margin and at the apex, almost 

 twice longer than broad. Length, 9 7.3 mm. 



A. tuberculifer Kirby in Richardson, Fauna Bor. Amer. IV., 

 278, pi. VI., fig. 5 (1837). 



A. caliginosiis Walk., Cat. Hem. Hct. Brit. Mus. VII., 36 

 (1873). 



This is a Boreal species which has hitherto been recorded 

 only from Canada and even there it seems to be rare. From the 

 United States I have seen but one specimen, taken in Colorado 

 (probably in the high mountains) b}^ Morrison, and the species has 

 apparently remained unknown to Uhler and Heidemann. It is 

 closely allied to but specifically distinct from the Palearctic A. 

 crenaticollis F. Sahib. 



6. Aradiis fiinestits,r\. sp — Black, apical margin or at least 

 apical ang^e of connexival segments yellowish, corium with a more 

 or less distinct yellow costal spot before the middle. Antennae 

 thin, second and third joints slightly and gradually incrassated 

 from the base to the apex, third joint about one-third the length 

 of the second, fourth joint equal to third in length and thickness. 

 Pronotum twice broader than long in the middle, the lateral 

 margins parallel from the middle to the base. Scutellum pentagonal, 

 as long as the pronotum in the middle, the lateral margins parallel 

 from the base to the middle. Hemelytra reaching the apex of the 

 dorsal genital segment, costal margin of corium scarcely (cf) 

 or slightly (9) ampliated toward" the base. Female dorsal genital 

 segment dilated toward the very broad apex, laterally covering 

 the basal part of the apical lobes, reaching almost to their outer 

 margin, its apical margin broadly rounded. Apical lobes of the 

 genital segment seen from the ventral side at least twice longer 

 than broad. Other characters as in A. hihercnlifer. Length, cf 

 57 mm., 9 7- 7.5 mm. 



This species is common in Canada as well as in the Northern 

 U. S. from the Atlantic to the Pacific ocean, and I have also seen 

 a specimen from Colorado. In the various writings of Prof. Uhler 

 it is recorded under the name tiihercuUfer Kirby ; and under this name 

 it stands in most if not all American collections. Kirby's des- 

 cription fits both these species equally v/ell. Fortunately he had 



