June-Sept., 1919.] D.WIS : ClCADAS. 217 



Head about as broad as the front margin of the pronotum ; front more 

 protruding than in most species of the genus ; median sulcus well denned. 

 Pronotum with the humeral angles rounded and the anterior angles promi- 

 nent. Last ventral segment constricted at the sides, then broadened out to 

 the extremity, which has the outer angles rounded and a sinus centrally. 

 Uncus when viewed in profile hooked at the end ; when viewed from behind, 

 the book is seen to be notched. The last ventral segment in the female 

 allotype is ratherly deeply notched. Venation of the fore wings testaceous, 

 darker beyond the transverse fold. Costal margin of fore wing yellow to end 

 radial cell, darker beyond ; subcostal vein black, or nearly so in some of the 

 paratypes ; basal cell clouded, in some of the paratypes blackened ; the vein 

 (C2) on the inner side of the eighth marginal cell is usually light in color. 

 Both pairs of wings variegated with black at base, with the membranes orange- 

 red. Dorsum partly clothed with short silvery hairs, which are rather long in 

 the cavities about the mesonotal X ; in striatipes the hairs are short about 

 the X and more golden in color. Beneath the vestiture is abundant, but the 

 hairs are not long. Head black with the grooves and supra-antennal plates 

 testaceous ; beneath with the median sulcus orange ; the transverse rugae 

 black ; rostrum black, orange at base. Pronotum black, the grooves testa- 

 ceous ; bordered all around with orange, but more narrowly on the anterior 

 margin. Mesonotum black, with the hind margin orange ; the elevated X 

 orange, variegated with black, and four orange spots arranged in a semi- 

 circle in front of the X. Metanotum black, posteriorly margined with orange. 

 Tergum black the eighth and ninth segments margined posteriorly with 

 orange. Uncus black ; in some of the paratypes there is a dorsal pale stripe. 

 Beneath, black, the legs pale striped with black, and each abdominal segment 

 edged posteriorly and on the sides with orange. In the allotype and some of 

 the paratypes the black is reduced to an interrupted stripe on the central part 

 of the abdomen, with a black spot each side on the segments. Valve pale 

 variegated with black. 



Measurements is Millimeters. 



Male Type. Female Allotype. 



Length of body 24.5 24 



Width of head across eyes 8 8 



Expanse of fore wings 60 64 



Length of valve 3 



In addition to the type and allotype the following specimens have 

 been examined, and unless otherwise stated, they are in the writer's 

 collection. 



Utah. — Logan, Cache Co., June 28, 1904, male, and male. July 13. 

 1907, collection Dr. E. D. Ball. Hyrum. Cache Co., July 2~. 1904, 

 two males, collection Dr. E. D. Ball. Wellsville, Cache Co.. Utah. 



