614 CATALOGUE OF 



abdomen basi pallide testaceum ; femora poslica extus albido vittata; 

 tibiae poslicce pallide trstacece; alee anlicce pallide cinerea, corpore 

 longiores, gutlis subcoslalibus nigris, plagis qnatuor slrigisque dvabus 

 obliquis discoidalibus cinereis piceo venosis, slriyis duabus basulibus 

 e venis nigris. 



Female. Tawny. Prothorax and hind part of the head with two 

 broad blackish snipes which do not extend to the hind border of the former. 

 Head smooth ; three blackish streaks on each side between the eye and the 

 mouth; tip of the vertex depressed, hexagonal; front thinly punctured, 

 with four distinct keels, which are bordered with blackish on both sides and 

 diverge slightly towards the face. Eyes elongate-elliptical, not oblique, 

 with many brown lines. Palpi pale testaceous. Antennae luteous. Pro- 

 thorax smooth, with a well-defined keel which is slightly interrupted by the 

 transverse impressed lines; two broad blackish exterior stripes, which, like 

 the inner stripes before mentioned, include some minute testaceous 

 pustules ; space between the outer and inner stripe partly testaceous; hind 

 part scabrous; fore border rounded; sides very slightly rounded; hind 

 border much rounded. Prosternal spine pale testaceous, thick, oblique, 

 curved, acute, extending to the mesosternum. Abdomen pale testaceous 

 towards the base. Hind femora with a whitish stripe on each side, a little 

 longer than the abdomen ; hind tibiae pale testaceous, very little shorter 

 than the hind femora, their spines with black tips. Fore wings pale 

 cinereous, longer than the body, with some black dots along the costa and 

 with some cinereous piceous-veined marks in the disk, and with two lanceo- 

 late streaks which proceed from the base and are formed by piceous or 

 black veins; the marks consist of four large spots and of two exterior broad 

 oblique streaks, of which the outer one is very irregular. Hind wings 

 pellucid ; veins black, bright pale yellow towards the base and along the 

 interior border. Length of the body 24 lines; expansion of the fore wings 

 60 lines. 

 Souakin, Africa. In Mr. Lord's collection. 



Asia. 



A. Prothorax wiih a high keel. 



a. Hind wings red at the base. . - - flavicornis. 



b. Hind wings not red at the base. - - lulescens. 



These two species may form a new genus, which is as much allied to 

 the group of Tropidacris, Titanacris and Lophacris, as it is to Cyrta- 

 canthacris and to Acridium. 



B. Prothorax with a low keel. 



a. Keel rather slight. 



* Fore wings with markings. 



f Prothorax striped. - - ranacea. 



J-f Prothorax not striped. - - subliturata. 



** Fore wings without markings. - - robusta. 



b. Keel very slight. 



* Hind tibiae not red. 



f Hind tarsi tawny, - - fusilinea. 



ff Hind tarsi white. - - - inficita. 



** Hind tibiae bright red. - ... rufitibia. 



