THE CANADIAN ENTOMOLOGIST. 73 



black interrupted with yellowish : only a few costals before the pterostigma 

 forked. 



Length of body, male, 45 to 55 m.m. ; female, 33 m m. ; exp. al., 56 

 to 60 m.m. 



Hab., New Mexico, Aug.. 1S72. Mr. Yarrow ; Colorado, Manitou ; 

 Wyoming, Bridger Basin, Mr. Garman ; Salt Lake City, Sept , 1877, Mr. 

 Austin ; Farmington, July 23; Ogden, Aug. 2, O. Sacken ; Dakota, Cus- 

 ter Co., Garman. Four males and three females in alcohol, and four 

 females dry. 



7. Brachy)icmurus blandus. 



Myrmelcon blandus Hag., Syn. N. Am. Neur., 235. 22. 



Small, yellow, marked with black. Face pale yellowish, with a 

 superior trifid black spot : it is united with the vertex by a narrowed part 

 going upward between the antennae; on each side below the pale ring around 

 the antennae it reaches nearly the eyes ; the inferior margin bisinuated, 

 sending a fine black median line to the clypeus ; labrum yellow ; palpi 

 pale, maxillary with last joint cylindrical, brownish : labials scarceiy 

 longer, last joint fusiform, very pointed, brown except on base. Antennae 

 clavate, strong, about as long as head and thorax, a little shorter in the 

 female, where they are larger clavate, brown, luteous on clava, visibly 

 annulated with yellow, principally on the basal half; the two basal joints 

 black. Vertex elevated, cut straight in front, black ; above yellow with 

 two large approximate black spots, a little dilated externally. Prothorax 

 as long as broad, yellow, with two black bands, which have anteriorly an 

 external yellow incision ; the outer part of the black band reaches not the 

 transversal furrow ; beneath on each side of the prothorax a black stripe : 

 mesothorax and metathorax black marked with yellow similar to B. nigri- 

 labris ; sides below the wings black, with some yellow stripes. Abdomen 

 clothed with white hairs, yellow above, trilineated with black ; beneath 

 black ; of the male longer than the wings, slender ; appendages half the 

 length of last segment, pale with long dark hairs ; cylindrical, obtuse on 

 tip, which is bent up a little ; between them beneath a small short tri- 

 angular plate ; of the female as long as the wings ; genitals pale, the upper 

 part split with a transversal row of black spines ; below two short pale 

 cylindrical appendages. Legs yellow, sprinkled with black, with black 

 hairs ; tip of all joints of tarsi black ; spurs brown, as long as the two 

 basal joints. Wings hyaline, hairy around and on the venation, which is 

 black, interrupted by pale yellowish ; pterostigma large, pale yellow. 



