172 ENTOMOLOGICAL NEWS. [June 



wing similai" to fore wing; costals forked only near the pterostigma 

 one to three transversals basad of radial sector. Length 9 18 inm» 

 expanse 37 mm. Phoenix, Arizona, September [Dr. Kunze]. 



Nearer to B. mmiisculus than to any other species, but easily sep- 

 arated from that by the lack of median lines on the pronotura, un- 

 marked hind femora, etc. 



<SOME NEW SPECIES OF ATHYSANUS. 



By E. D. Ball, Fort Collins, Colo. 

 Athysanus frigidus, n. sp. 



General appearance of A. exitiosa broader and shorter. As 

 broad as o&.soZe^ft.s, with a rounder vertex. Length, ? 4-4. .5mm, 

 d 3.5mm ; width, ? 1.6mm, d 1.2mm. 



Vertex two and one half times wider than long, half longer on 

 middle than against eye, the surface sloping and broadly rounding 

 to the tumid front ; ocelli distant from eyes ; front wider than long, 

 twice wider at apex than the parallel margined clypeus ; pronotum 

 half longer than vertex, lateral margins very short, humeral mar- 

 gins long, rounding; elytri slightly longer than the body in both 

 sexes, narrowing behind, venation normal, apical cells rather short. 



Color : Grayish or brownish white ; a large oval spot on either side 

 the middle of the anterior margin of the vertex, a large round one 

 between the ocelli and the eyes, sometimes three small ones on 

 the disc, forming a triangle, a pair of elongate marks on the 

 pronotum back of the anterior margin and a pair of spots on the 

 disc of the scutellum, black; elytra covered with a whitish 

 " bloom," the nervures obscure; face light, a pair of large spots be- 

 low those on the vertex, another pair, irregular in shape, near the 

 apex of front. Light colored specimens may lack some of the spots 

 on face, while darker ones — and the males as a rule have brown 

 stripes— between the light veins of the elytra. 



Genitalia : Female, ultimate ventral segment twice longer than 

 penultimate, shallowly emarginate posteriorly, with a broad, 

 slightly, I'oundingly, bilobed, median tooth : pygofers twice longer 

 than wide, equaling the ovipositor; male, ultimate ventral segment 

 long, half longer than valve, valve broad, obtusely rounding, plates 

 broad at base, regularly narrowing to the slightly divergent points, 

 scarcely twice longer than the valve. 



Described from numerous specimens collected at Fort Col- 

 lins, Colo., and back into the lower foot-hills. Found only on 

 Artemisia frigida, to which the white color and powdery 

 '' bloom" of both larvse and adults well adapt it. 

 Athysanus arctostapJiyli, n. sp. 



Shorter and stouter than A. instabilis, with shorter elytra. 



