244 The Ohio Naturalist. [Vol. II, No. 6, 



Color : vertex tawny yellow, a line between the fulvous ocelli broken for- 

 ward in the middle, a transverse band between the anterior portion of the 

 eyes and a spot in each basal angle usually connected by a bracket-shaped 

 mark hung from the middle of the band in front, fuscous. Pronotum irreg- 

 ularly fuscous marked, usually a fairly definite band of spots on the anterior 

 submargin. Elytral nervures pale testaceous, margined with fuscous, the 

 cross nervures broader and lighter. Face with the sutures, arcs on front and 

 a spot on apex of clypeus fuscous. Below dark ; legs dark or sometimes 

 annulate with pale. 



Genitalia : female segment half longer than the penultimate, posterior 

 margin weakly produced in the middle and at the lateral angles ; male valve 

 semicircular, plates triangular, two and one-half times as long as the valve, 

 the margins with coarse hairs. 



Habitat : mountains of Colorado and Mt. Washington, N. H. 

 This and the three preceding species form a little grotip of closely 

 related forms in which the genitalia are of little value. In fact, 

 this and the five preceding species are much alike in genital char- 

 acters and it is only on the shape of the head, elytra and color 

 pattern that they are readily separated. The shorter and more 

 compact form, longer head and deep chestnut color will readily 

 distinguish this species. 



ATHYSANUS DENTATUS OSB. AND BALL. (Plate 17, fig. 5.) 

 AlhysiDius di'iitafiii Osb and Ball. Proc. Dav. Acad. Nat. Sci. VII, p. 95, 1898. 



Smaller and lighter colored than ardostaphyli, which it somewhat resem- 

 bles. Pale testaceous, faint lines or spots on front margin of vertex and a 

 wavy line on the disc forming an X-shaped figure. Length, 3mm ; width, 

 I mm or le.ss. 



Vertex narrow, but little wider than long, roundingly angled before, nearly 

 flat, the apex but very slightly conically produced. Face narrow, but almost 

 parallel-margined. Elytra about as long as the body, inclined to be flaring, 

 venation often indistinct, as in ardostapliyli, the central anteapical cell not 

 as strongly constricted. 



Color : vertex pale yellow, six indistinct spots on the anterior margin some- 

 times united into an irregular broken line ; the posterior disc with a median 

 pale X-shaped figure and a pale spot on either side at the base, the whole 

 margined with a continuous brown line. Pronotum brownish or olive, the 

 anterior margin yellowish, set off by a row of fuscous spots of which the 

 median pair are the most distinct. Scutellum dirty yellow with a pair of 

 brown spots on di.sc in line with those on pronotum and vertex. Elytra pale 

 testaceous subhyaline, the nervures slightly lighter, sometimes a cross nervure 

 on clavus and the one between the sectors are distinctly lighter and set ofT by 

 a fuscous spot. Front testaceous with short, light arcs and a light spot below, 

 rest of face pale yellow with sutures and spots on the apices of lorae and 

 clypeus brownish fuscous. 



Genitalia : female segment abruptly narrowed one-third the distance from 

 the base, exposing a pair of light colored membranes, the lateral angles of 



