THE CANADIAN ENTOMOLOGIST. 



its basal part, mesocorium with a single oblique transverse ridge 

 behind the middle, endocorium without distinct transverse ridges, 

 membrane scarcely reticulate. Abdomen ( 9 ) one-third broader 

 than the pronotum, with the apical angles of the segments very 

 slightly obtusely prominent, those of the fifth segment more dis- 

 tinctly so and those of the sixth segment strongly prominent owing 

 to the lateral margin being deeply arcuately indented between 

 the apex of this segment and the base of the genital lobes; sixth 

 ventral segment in the middle scarcely longer than the fifth and 

 than the two genital segments combined, its apical angles reaching 

 the transverse level of the apex of the second genital segment which 

 is half the length of the first, apical margin of dorsal genital seg- 

 ment notched in the middle, genital lobes convergent, approxi- 

 mated interiorly, their inner margin strongly rounded, the outer 

 margin slightly rounded w^ith a short tooth-like process in the basal 

 half. Length, 9 8 mm. 



Colorado (Leadville, 10,000—11,000 ft.: H.F. Wickham).— 

 Coll. Schouteden. A plain-looking species, but not closely allied 

 to any described North American form. 



3. Aradiis curticollis, n. sp. — Broadly ovate (cf ), finely and 

 thickly granulated, jet-black, membrane brown, third antennal 

 joint of dirty whitish color, anterior and intermediate tibiae paler 

 in the middle. Head a little longer than broad, vertex with two 

 longitudinal impressions which are slightly divergent forwards, 

 eyes very prominent, substylated and directed a little upwards, 

 intra-ocular tubercle scarcely perceptible, antenniferous spines 

 slightly divergent, reaching beyond the middle of the first antennal 

 joint, without a tooth on their outer margin, rostrum reaching 

 fore coxae, antennae almost fusiform, incrassated in the middle 

 and equally tapering toward base and apex, as long as head and 

 pronotum together, first joint rather narrower, second joint as 

 long as the breadth of the head (with the eyes) and considerably 

 longer than the last two joints combined, cylindrically incrassate 

 from apex to beyond middle, then moderately narrowed toward 

 base, third joint cylindrical, narrower than apex of second and not 

 much more than one-third its length, suddenly narrowed at base, 

 fourth joint narrower and conspicuously shorter than third. Pro- 

 notum with entire, not crenulated lateral margins, distinctly 

 shorter than head and three times broader than long, a little narrow- 

 er than the hemelytra between their dilated subbasal part, its 

 greatest width before the middle from which point the lateral 

 margins are very strongly convergent to the apical angles and 

 moderately roundedly convergent toward the base, the two median 

 ridges parallel, reaching apical margin, the following pair at the 

 base more distant from the median ridges than these from each 

 other, a little convergent anteriorly, not reaching anterior margin, 



