4iB ENTOMOLOGICAL NEWS. [Feb., *02 



or slightly convex from about its middle to near the apex ; the outer 

 edge straighter than mfraternus, particularly at base, not angulate ; 



(3). in profile upper edge convex ; 



(4). the lower edge tapering to the apex in its apical fourth or fifth, a 

 small tubercle (larger than in fraternus or crassus) where the tapering 

 begins, at which point the appendage is hardly thicker than elsewhere in 

 its post-basal portion ; between this tubercle and the apex the edge is 

 concave without a convexity as \n fratermis ; 



(5). viewed obliquely from above at 45° with the horizontal plane the 

 appendage shows no tubercle basally to the one seen in profile. 



(6). Branches of inferior appendage with the apices barely outside of or 

 just at the outer edge of the superior appendages ; 



(7). undivided portion when viewed from below with the edge be- 

 tween the branches forming an undulating curve, less than a semicircle, 

 or with a short portion at the middle straight, in either case a distinct con- 

 cavity before the apex of each branch. 



(8). Vulvar lamina less than half as long as the sternum of the ninth 

 segment, widened at its base as m fraternus ; from this widened portion 

 the sides extend parallel to the apices of the two contiguous branches, 

 the incision between which has usually an angle of almost 90°, with the 

 sides straight or slightly convex. 



(9), Third femora of female without external yellow stripe. 



(10). Dark stripe on first lateral suture in both sexes not interrupted. 



(11). Vertex of female with a brown or whitish spine at either end of 

 the transverse ridge. 



(12) In both sexes tibiae black, the superior surface with a pale yellow 

 stripe, usually extending from the base to about the middle, rarely to the 

 apex, and rarely reduced to a basal spot or streak. 



(13). Dorsal spot on seventh abdominal segment of male one-half to 

 three-fifths as long as the segment. 



(14). Second femora of female beneath dull brownish, obscure green 

 towards apex. 



(15). In both sexes the tenth abdominal segment is obscure brown, 

 paler than segments eight and nine, with a round, yellow, median, dorsal 

 spot, which may be so obscured as to be almost invisible. 



(16 and 17). Segments seven, eight, nine and ten are obscurely marked 

 and shaded with black, brown and yellow, their general color being 

 lighter than the segments before them, ten being the palest one; the 

 color pattern on these segments is not as sharply defined as in related 

 species, being in general, like fraternus. 



(18). Margin of occiput similar in outline in both sexes ; slightly 

 higher in the female, high, uniformly convex or, more rarely, with the 

 sides straightened or very slightly concave, 



(19, 3oand 3i) See (16 and 17) above. 



Suture between nasus and frons obscure, slightly darker than the ad- 

 jsicent parts, best shown in very teiieral individuals which also show 



