142 



Mr. B. P. Uvarov — A Revision of 



the base, densely hirsute between the 

 spines (fig-. 7, d). Male subgenital plate 

 elongate-cordiform. Elytra very long 

 and narrow. Wings with the base 

 infuraate. (Africa: genotype, Acri- [Karsch. 



dium hmnilicrus, Karsch.) 12. Orthacanthacris, 



27 (20). Fastigium not impressed, sloping and 

 forming a broad bow with the frontal 

 ridge ; the latter subobliterated below 

 the ocellum. Wings completely in- 

 fiimate. Male cerci short, somewhat 

 compressed laterally, triangular ; sub- 

 genital plate conical. Pronotum with 

 the median keel very low, linear. 



(New Guinea : genotype, Orthacantha- [gen. nov. 



cris bimaculata, Will.) 13. Willemsea *, 



Fig. 7. 



a, Falanf;/a m(/ricoi'ms (Hiirm.) ; b, Patam/a succinctn (Ij.)- c, Chondraci't's 

 asperata (Bol.) ; d, Orthacanthacris hmnilicrus (Karsch). X 2. 



28 (13). Frontal ridge not at all dilated above the 



ocellus, with its margins parallel 

 throughout or feebly divergent down- 

 wards (tigs. 2, c, d). 



29 (34). Hind femora short and broad, with the 



apical part hardly attenuate (iig. 7, a). 



30 (31). Median keel of pronotum high or, when 



low, always quite distinct and regular, 

 not interrupted or obliterated between 

 the sulci. Male cerci strongly laterally 

 compressed, with the apex attenuate 



* Dedicated to Dr. 0. Willemse, an ardent student of Indo-31alayau 

 and Australasian Orthoptera. 



