229 



small notches in the posterior border, the styles are beset with 

 minute spines, the right is a little shorter than the left. Cerci 

 slender. Body beneath and legs rufo-testaceous. Front femora with 

 long spines succeeded distally by shorter. Total length 27 mill. ; 

 length of body 11 (?) — 12 ((j") mill. ; length of tegmina 13 mill. ; 

 pronotum 3,1 mill. X 4,6 mill. 



Cameroons, Mukonje Farm (H. Rohde) 1 ^f, 2 5?- 

 This belongs to the group including /, cirmanioinea, Gerst., 

 /. punctifrons Gerst. etc. but is distinguished by the form of the 

 supra-anal lamina in the (^f ; the nearest ally of the species appears 

 to /. biniaculata. Gerst. 



ISGHNOPTERA GRURALIS sp n. 



(j" and 2. Piceous, nitid. AntenucC bright rufous except at base. 

 Pronotum barely covering vertex of head, posteriorly rounded, 

 sides detlexed, a pair of shallow oblique impressions. Tegmina 

 considerably exceeding apex of abdomen, 14—1(3 costals, radial 

 vein bifurcate in posterior third, 9 longitudinal discoidal sectors, 

 anterior ulnar tri-ramose, 5-7 costals, ulnar vein with 10 rami, 

 4 being incomplete. Opening of scent-gland (,^) on 1''* abdominal 

 tergite ; supra-anal lamina ((^f) produced, sub-quadrate, posterior 

 angles rounded, (2) narrow, trigonal. Abdomen beneath with the 

 apex rufescent, apex piceous ; sub-genital lamina, (^f ) produced, 

 asymmetrical, the apex pointed and together with the single (left) 

 style clothed with stout bristles, (9) ample, semiorbicular. Cerci 

 orange. Legs piceous, the tibiae, except at base and apex, orange, 

 front femora with a complete row of spines on anterior margin 

 beneath, the more distal the shorter. 



(^ Total length 21,5 mill. ; length of tegmina 17,2 mill.; length of 

 body 17 mill. ; pronotum 4,7 mill. X 5 mill. 



$ Total length 27,5 mill. ; length of tegmina 22,1 mill. ; length of 

 body 20,5 mill. ; pronotum (3,1 mill, x 7,2 mill. 



Cameroons. (^ Type in Brussels Museum. $ Type in Oxford 

 Museum. 



The is quite different from ail the known African species of 

 IscJinoptera and is more closely allied to some of the larger 

 Oriental species. 



The African species of Isclinoptera can be distinguished as far as 

 the males are concerned by the following key. The females resemble 

 each other very closely and present practically no characters of 

 importance in specific diagnoses, it is consequently impossible to 

 draw up a really reliable key to their identification especially as 



