Dr. M. Burr — Soles on the ForticuKiria. 43 



Head smooth, sutures tlistlnct, deep red, sliaded with 

 black. 



Pronotum smooth, briii:ht orange-yellow anteriorly, nearly 

 black posteriorly ; .sliL;-litly broader than long, and slightly 

 widened posteriorly, all sides straight. 



Meso- and metanota smooth, black. 



Sternum orange-yellow, the plates as in A. hristenseni. 



Legs orange-yellow. 



Abdomen moderately dilated, almost black, bat with a 

 distinct red tinge ; sides of fifth to ninth segments in ^ acute 

 and rugnlose. 



Last dorsal segment $ transverse, rectangular, nearly 

 smooth, with a median depression. 



Penultimate ventral segment ^ broadly rounded, the apex 

 truncate ; in ? obtusangular. 



Parameres narrow. 



Forceps with the branches in the S remote, stout, tri- 

 gonal in basid halt", gradually attenuate ajjically, asymmetri- 

 cally but gradually arciiale, the inner margin finely denticu- 

 late ; in the ? contiguous, straight, denticulate on the inner 

 margin. 



Abyssinia : Harrarand River Errer, 9 (5* , G ? {Staudinger 

 and Kristensen, c. m. and Coll. Petersen) ; Gara Mulata, 

 1 (J , 1 $ (^Erlanger and jS^eumann, in 2Ius. Berlin). 



This species is closely related to A. felix and A. kristen- 

 seni ; irom the former it dififers in the absence of the rectan- 

 gular dilatation of the right branch of the forceps in the male 

 and also in the yellow pronotum. 



From A. hristenseni it differs in its smaller size, weaker 

 build, and in coloration ; in that species the abdomen is jet- 

 black above, iu this it is a very deep red-black, the red tinge 

 being quite distinct; the head usually has an indistinct black 

 patch above, and the pronotum is clear orange-yellow iu the 

 anterior portion. 



The sculpture of the abdomen is different, being a fine 

 punctulation in this species. The forceps are much less 

 abruptly attenuate and more regularly arcuate ; in the female 

 the branches are contiguous and straight. 



It answers well to the description of Gelotolahis hurri, 

 Zacher, from north-eastern Africa, but the apical segment of 

 the parameres is much narrower and less pointed apically 

 than apjjears to be the case in that species, judging from 

 Zacher's figure. 



