igiS-] M. Burr: Dermaptera. 141 



dorsal segment in cf smooth, transverse, gently raised just before 

 the posterior margin into a transverse, smooth, simple crest, 

 which slopes abruptly in the apical side down to the margin 

 itself : in the 2 simple : penultimate ventral segment & ample, 

 nearly square : pygidium cf tumid, gently narrowed, with a minute 

 spinule at each angle, the apex gently concave : forceps with the 

 branches & remote, rather stout, elongate and arcuate : in the 

 basal third, on inner margin, underneath, there is a prominent, 

 laminated, acute tooth, and in the middle third, the inner margin 

 is feebl}' laminated : in the 5 the branches are simple and con- 

 tiguous, 



Rotung. 1400 ft., 23-xii-ii — 2-i-i2, II (f cS' and 8 $ $ , 

 brachypterous. Nos. "^f . ^f, ^', ^. ^f, 52|i. 



222 3 2230 2134 2132 2137 2139 2140 2226 2215 2219 2224 



19 ' 19 ' 19 ' 19 ' 19 ' ig ' ig ' ig ' 19 ' ^ ' 19 ' 



2228 2252 1 ^ „ rt . ^^ 2124-6 2128. 



-yz-, ^^ : also 9 9 , macropterous. ^os. — r j> 



19 19 ' ^ 19 19 



^^, ^^. Under bark and in rotten wood. Also 



No. ^ ° with no localitv label, 

 19 



Kobo, 400 ft., 2 — 8 xii-ii, macropterous, 799, Nos, ^^^^ 



19 » 

 2351 2354 2356 2358 2363 2365 ^ ^ ^ 



I9-' -f^' 19 ' -19' "19 ' -^ '■ brachypterous, 5 ^ ^, 



and 7 $ 9 , under bark and in rotten wood. Nos. ^^^» 



2254 2257 226 5 2267-8 2334 2353 2^7 2373 2377 2378-9 

 19 ' 19 ' 19 ' 19 ' 19 ' 19 ' 19 ' 19 ' 19 ' 19 * 



Sadiya, 26-xi-ii, i brachypterous cr" , under bark. No. ^^. 



Brachypterous specimens seem to be present in a majority ; it 

 will be observed that there are no macropterous males, and 13 

 macropterous females, but of the brachypterous form there are 

 16 males and 15 females. All are recorded as occurring under bark 

 or in rotten wood. 



It somewhat recalls the Ethiopian S. kristenseni ; of the 

 Oriental species it is perhaps nearest to 5. luteus, but the form of 

 the forceps is ver}^ distinctive. 



No. -^ , a brachypterous male (for want of a macropterous 



2151 



male) is the nomotype. 



Genus Irdcx, Burr. 



I. Irdex nitidipennis, Borm, 



Rotung, 1400 ft., 24-xii-ii. 2 9 , under bark. Nos. -^ and 

 2141 

 19 ■ 



