486 Mr. B. P. Uvarov— A Revision of 



fastigium ; its surface impressed below the ocellum, flat 

 above it ; margins callous. Fastigium of vertex slightly 

 sloping, somewhat impressed along the middle ; its margins 

 raised, convergent behind, or nearly so. Eyes large, strongly 

 prominent, about twice as high as long; their height 

 subequal to the subocular distance ; distance between eyes 

 distinctly less than the length of an eye. Pronotum laterally 

 compressed and more or less constricted in the prozona ; 

 its surface rugulosely punctured, and bearing small scattered 

 callous tubercles ; median keel fairly thick, tectiform, 

 convex in profile, deeply cut by transverse sulci. Prosternal 

 spine cylindrical or slightly compressed laterally, straight, or 

 feebly bent forwards, with the apex rounded. Elytra long 

 and fairly narrow, with the apex attenuate and bent back- 

 wards (fig. 6 c). Wings with the whole basal part, or with 

 but a submedian fascia, infumate. Male cerci cylindrical 

 and narrow, almost filiform, at least as long as the anal 

 plate, curved. Male subgenital plate trilobate apically. 



Though the genotype (A. agyptium) somewhat differs 

 from the two other known species in the shape of the pro- 

 notum, which in it is less constricted in the prozona and 

 more angulate behind, there is no reason to split the genus, 

 which is quite a natural one. 



Key to the Species. 



1 (2). Pronotum distinctly angulated behind. 



Prosternal spine perfectly straight and 

 vertical, not compressed laterally, with 

 tlie apex obtuse. Male cerci shorter, 

 neither reaching the apices of the lateral 

 lobes of subgenital plate nor touching 

 each other apically. (Mediterranean 

 countries.) 1. cegyptium (L.). 



2 (1). Pronotum distinctly rounded behind. Pro- 



sternal spine slightly inclined backwards, 

 compressed laterally, with the apex sub- 

 acuminate. Male cerci longer, reaching 

 to the apices of the side-lobes of sub- 

 genital plate, and touching each other 

 apically, or even with the apices crossed. 



3 (4). The fascia of the hind wings, however 



broad, never touching the hind margin ; 



base of the wings hyaline, or rosy, or 



violaceous. (Africa, south of Sahara.) 2. mcestiim (Serv.). 

 a [b). General coloration darker. The wing- 

 fascia very broad, shining black, with 

 the outer margin sharply defined ; a 

 longitudinal series of black spots be- 

 tween the anal and axillar vein, and 

 several more black confluent spots 



near the apex. (South and equatorial [(Serv.). 



Africa.) 2 a. subsp. moestum 



