April, 1902.] North American Species of Athysanus. 243 



Color : vertex pale yellow with three transverse fuscous bands as in ardo- 

 staphyli, the posterior one broken forward on each side until it touches the 

 middle one, its median limb forming a crescent, the median line broadly 

 fuscous connecting the crescent with the band in front. In dark specimens 

 these bands become confluent and the yellow reduced to elongate spots be- 

 tween them. Pronotum thickly and irregularly marked with fuscous omit- 

 ting an elongate spot on the anterior margin. Scutellum dark, usually the 

 margins, a spot on apex, and a pair of elongate tri-lobed ones on disc, pale 

 yellow, Elytra light the inner apical cells smoky, nervures milky white, the 

 cross nervures very broadly so, nervures broadly, heavily margined with fus- 

 cous. In dark specimens often filling up all but a small milk white spot in 

 the center of each cell. Face light with the sutures, arcs on front and a spot 

 on apex of clypeus, black ; or black with small spots in the middle of the 

 facial pieces and narrow arcs light. Below dark, anterior and middle femora 

 with two pale yellow bands. 



Genitalia : resembling vaccinii, female segment slightly less arcuate, its 

 lateral margins and the pygofers pale yellow ; male valve rounding, plates tri- 

 angular, a spot on each side of the disc and stout hairs on the margin, yellow. 



Habitat : (Europe) N. Y., Mich, and Colo. Doubtless widely 

 distributed in a northern range. 



Specimens of striaiidiisixon\ Europe (Dr. Melichar) agree with 

 our specimens in every respect, except that in them the central 

 anteapical cell is often divided while in our material this is rarely 

 the case. The fact that this is variable in both series, however, 

 proves it of no value. 



This and the preceding species, while unquestionably distinct, 

 are still closely related and it is little wonder that Van Duzee con- 

 fused the two forms. He first found vaccinii and described it as 

 striatuhis f at the same time suggesting vaccinii for it if it proved 

 to be distinct, then later finding the real striahdus, but as he re- 

 garded the other as being striatulus, this he named instabilis. 



Besides the more definite black and white appearance of the 

 elytra in this species, the two pale bands on the anterior femora 

 will most readily separate it from vaccinii. 



ATHYSANUS ARCTOSTAPHYLI BALL. (Plate 16, fig. 5.) 



AlliysaiiHS aictostaphyli BaW. Ent. News, p. 173, 1S99. 



Resembling vaccinii and striatulus in form and color pattern. Shorter 

 and stouter with a more angular vertex. General color deep, testaceous brown. 

 Length, 9 nearly 4mm, $ 3.5mm ; width 1.25mm. 



Vertex slightly obtusely angulale, the apex produced, conical, twice wider 

 than long, over half longer on middle than against eye, three-fourths the 

 length of the pronotum. Front broad, convex in both diameters, wedge- 

 shaped, narrowing directly to the parallel-margined clypeus. Elytra broad 

 and short, usually flaring in the female, venation as in the three preceding 

 species the apical cells shorter and the central anteapical not as strongly 

 constricted. 



