A Revision of the Old World Ciirtacanthacrini. 473 



XLVTI. — A Revision of the Old World Cyrtacanthacrini 

 {Orthoptera, Acrid idix^). — II. Genera Pliyxacra to AVillem- 

 seaf. By B. V. Uvarov, F. E.S., Assistaut Entomo- 

 logist, Imperial Bureau of Entomology. 



[The figures referred to in this paper will be found in Part I.] 



I. Genus Phyxacra, Karny. 



1907. Phyxacra, Karny, Sitz. Akad. Wiss. Wien, Bd. cxvi. Abt. 1, 

 p. 309. 



Karny included in this genus^ besides tlie genotype, Coptaci'a 

 variolosa of Krauss, also Ph. coerulans, Karny. Later on 

 (1914j Rehn described the third species, Ph. Jiiyrispinis, 

 which, however, judging by the description, is not a 

 Phyxacra^ but an Acridoderes. On the other \\ix\\(\.y Locust a 

 rcnkensis, Karny, of which I have studied the type, is 

 undoubtedly congeneric with variolosa and coerulans, while 

 variolosa itself, as well as Cyrtacanthacris scrobiculatus., 

 Karsch, are conspecific with Caloptenus strenuus, Walk. 

 Thus, the number of the known species of Phyxacra is three: 

 strenua, coerulans^ and renkensis; as all of them are as yet very 

 insufficiently known and represented by very few specimens, 

 nothing definite can be said as to their exact relationship, 

 and the following key is necessarily very incomplete : — 



Key to the Species. 



1 (2). Fastigium of the vertex not punctured. 



Prouotum narrowed anteriorly, but 

 without any constriction ; its posterior 

 fourth reddish brown, with blackish dots 

 and streaks ; hind angle straight, not 

 rounded. Anal iield of elytra with an 

 indefinite reddish design. (Sudan.) . . 1. reyilcensis (Karny). 



2 (1). Fastigium of the vertex coarsely punctured, 



at least towards its front margin, 



3 (4). Pronotum without a constriction in the 



prozona ; its front margin not touching 

 the eyes. Wings hyahne. (Senegal, 

 Gold Coast.) 2. streyiua ("Walk.). 



4 (3). Pronotum thick, distinctly constricted in 



the prozona ; its front margin touching 

 the eyes. Wings bluish at the base. 

 (Xorthern Uganda.) 3. ccerulan^s, Karny. 



t Part I., Ann. & Mag. Nat. Hist. (9) xi. p. 130 (1023). 

 Ann. & Mag, N, Hist. Ser. 9. Vol. xi. 31 



