474 Mr. B. P. [Jvarov — A Revision of 



1. PJiyxacra renkensis (Karny). 



**1907. L[ocndn] renkensis, Karny, Sitz. Akad. Wiss. Wieii, Bd. cxvi. 

 Abt. l,p. 306, no. 58. 

 1910. C[i/rtac(uithacris'] renkensis, Kirby, Cat. iii. p. 454^ no. G9. 



It is very strange that Karny did not recognise that this 

 species belongs also to the genus Phy.vacra described by 

 liimself in the same paper, seeing that the venation of the 

 elytra and the shape of the bead and sternum show the 

 closest relationship io variolosa and cwndans. As the type is 

 the only specimen known and in very bad condition, having 

 obviously been kept some time in alcohol and having lost 

 both its hind legs, nothing can be said as to the variability 

 of species. 



Geographical distribution. The type is from Kenk, Sudan. 



3. Phyxacra strenua (Walk.). (Figs. 4C, 4D, 5 a.) 



**1870. Caloptenus sirenuus. Walk. Cat. iv. p. 699. no. 49. 

 **1877. Cuptacra variolosa, Krauss, Sitz. Akad. Wiss. Wien, Bd. Ixxvi. 

 p. 33. no. 1. 

 1893. Cyrtacanthacris scrohiculatus, Karscli, Berl. Ent. Ztschr. 



xxxviii. p. 89. no. 49. 

 1910. C\j/rtacanthacris'] scrohicidatus, Kirby, Cat. iii. p. 453. no. 67. 

 1910. P[h7/.vacra'\ variolosa, Kirby, /. c. p. 469. no. 1. 

 1910. A[cricloderes'] strenuus, Kirby, /. c. p. 470, no. 1. 



The type of variolosa differs from that of strenua in its 

 slightly larger size and in its paler coloration, but I do not 

 hesitate to regard them as being conspecific. One female 

 in the British Museum from Liberia perfectly agrees in all 

 morphological characters with the type of variolosa, but is 

 of a darker colour, with distinct oblique brownish fasciae on 

 the elytra. It is very likely that Acridium crihrifrons. 

 Walk. (Cat. v., Suppl. p. 60), represents a male of this 

 species, as its type is fiom the same locality and collector as 

 that ofstretiua, but the type of cribrifrons is lost and nothing 

 definite can be said from the description. 



Geographical distribution. The type of strenua is from 

 Gambia, that of variolosa from Senegal. In the British 

 Museum there are specimens from Liberia and Yapi, 

 N. Teriitories, Gold Coast ; Karsch described his scrobicu- 

 latus from Bismarckburg, Togo, so that the species seems to 

 be confined to West Africa. 



3. Phyxacra cosrulans, Karny. 



icra'] coerulans, Karny, Sitz. Ak; 



.bt. ],p. 308. no. 61.. 



icra] coeruleus (sic !), Kirby, Cat. iii. 



This is a more robust species than strenua, differing from 



**1907. P[hi/.vacra'] cmrulans, Karny, Sitz. Akad. Wiss. Wien, 

 Bd. cxvi. Abt. ], p. 308. no. 61.. 

 1910. Plhyxacra'] coeruleus (sic !), Kirby, Cat. iii. p. 469. no. 2. 



