some AvacJinida from Yemen. 217 



? . — Eesembling the male in colour and structure, but with 

 relatively shorter appendages. Width of head equal to 

 patella +| tibia of palp and to patella + tibia of fourth leg. 



Measurements in millimetres. — ^ . Total length 25 ; width 

 of head 9; length of palp 21, of first leg 18, second 17, 

 third 21, fourth 30. 



? .—Total length 37 ; width of head 10 ; length of palp 

 19-5, first leg 15-5, fourth leg 24. 



Loc. El Kubar. 



Resembling the Persian species R. nigriceps, Poc, in the 

 coloration of the head and mandibles, but differing in the 

 coloration of the abdomen. In the last particular it comes 

 nearest to the Panjab species R. semiflava, Poc, and the 

 Transcaspian R. melanopyga^ Walter, but differs from both 

 in the coloration of the mandibles and carapace. 



Rhagodes Buryi, sp. n. 



$ . — Mandibles coloured as in the last species, but richer 

 yellow ; head rich yellow, and ornamented with a median 

 black stripe involving and as wide as the ocular tubercle in 

 front, and gradually widening posteriorly to equal, on the 

 posterior margin of the head, the width of tiie thoracic 

 tergites ; the latter jet-black ; tergal plates and dorsal area 

 of lateral membrane of abdomen jet-black; anal segment 

 black ; ventral surface of abdomen brown, darker posteriorly ; 

 palpi and legs coloured as in R. Rothscliildi ; coxse also pale as 

 in the latter, but the malleoli marginally infuscate. Relative 

 proportions as in the female of R. Rothscliildi, 



Measurements in millimetres. — Total length 30; width of 

 head 7 ; length of palp 15, of first leg 11, of fourth 19. 



Loc. Dthala. 



Easily distinguishable by its coloration from all hitherto 

 described species. 



Genus DiESiA, C. Koch. 



T)cBsia laminata, sp. n. 



^. — Colour. Head pale brownish laterally and in front, 

 pallid in the centre ; tubercle black ; mandibles pallid, un- 

 striped ; palpi infuscate, penultimate segment nearly black, 

 tarsus and basal half of femur pale ; third and fourth legs 

 infuscate, with distal and proximal ends pale ; thoracic seg- 

 ments and abdomen pale. 



Mandible : upper jaw with false basal articulation, slender, 

 straightish, slightly curved downwards apically, armed ou 



