100 MR. W. F, KIRBY ON ORTHOPTERA FROM [Feb. 4. 



22. Heteracris bettoni, sp. n. 



Male. Long. corp. 31-40 millim. ; long. al. ant. 14-15 millini. ; 

 long. fern. post. 16-17 millim. 



Female. Long. corp. 31-40 millim.; long. al. ant. 20-34 millim. ; 

 long. fem. post. 25-33 millim. 



Chestn tit-red, lighter in the male than in the female ; vertex 

 much contracted between the eyes, with a shallow depression 

 triangularly expanded on each side beyond the contraction : this 

 is intersected by a slight carina, the continuation of the middle 

 cai'ina of the pronotum. Pronotum with the hinder lobe granu- 

 lated ; in front of this poi-tion extends a brown shade, divided by 

 the central carina, and narrowing in front, but filling up most of 

 the centre of the pronotum and vertex as far as the end of the 

 depression on the latter. Head finely punctured ; sides of the 

 pronotum more sparingly but more coarsely punctured than the 

 hinder part, and with two very large pits below the lateral 

 carina in front of the first suture, and behind these two others 

 between the two svitures in the female, but only a still larger 

 one in the male ; below this, on the middle of the central lobe of 

 the pronotuna, is an oblong yellow carina. Legs red, first and 

 second pairs shoi^t, hind legs veiy long, femora with the basal half 

 moderately thickened ; tibiae about as long as the femora, with 

 from twelve to fovxrteen spines, slightly black-tipped, and gi-adu- 

 ally increasing in lengt.h from the base to the extremity. First 

 and third joints of tarsi of about equal length, the first thickened 

 in the middle, especially beneath ; the second about three-fifths as 

 long. Tegmina brownish hyaline, with dai-k nervures and the 

 outlines of several large spots ; some of the longitudinal nervvires 

 and intermediate spaces are reddish, especially above and below 

 the central area ; in closed specimens the lower red stripe is seen 

 to be continuous with the red borders of the pronotum. Wings 

 clear hyaline, with brown and reddish nervures. 



Described from three males and one female from Baringo 

 {Johnston) ; one female from Maungu, B. E. Africa {Betton) ; one 

 female from Thika-Thika, B. E. Africa {Gregory) ; one female 

 froiai Mombasa {Dr. J. Wilson) ; one female from Atbara, 

 Abyssinia {purchased). 



The female from Baringo is smaller than any of the othei-s. 



Apparently allied to Heteracris speciosa Walk, from Sierra 

 Leone, of which the Museum at present possesses only the type, 

 an immature specimen. 



Oaloptenopsis. 



Caloptenopsis Bolivar, Jorn. Sci. Lisb. (2) i. p. 173 (188&^). 



Head with the vertex between the eyes narrowed and tri- 

 carinate, the carinee very short, and f oi-med by an oblong fovea on 

 each side of the central carina ; beyond this point the vertex 

 slopes smoothly into the broad frontal ridge, which is not 

 sulcated but sparingly punctured, and is neai-ly straight. Thorax 

 broad," trica-rinate, depressed, with the central carinaiiigher tiran 



