38 Mr. IT. Cam] 



)ion on 



subuodiis, and Cii, ending 2-3 (usually 2) cells 

 beyond the quadrangle ; lower anal appendages 

 of tlie male as long as the upper. 



Upper appendages of S expanded dorso- 



veutrally tillyardi, sp. n. 



Upper appendages of tS not expanded dorso- 



vcntrally spinipes, Selys. 



(4) Wins-s with MJ separating far beyond the sub- 

 nodus, and Cui ending 1 cell beyond the 

 quadrangle; anal appendages of the male not 

 known fiUformis, Ris. 



Isosiicta tilhjardi, sp. n. 



1 ^ (holotype), Mt. Caaala, 13. vi. 14. 



Length of abdomen 34 mm. ; hind wing 21 mm. 



Bhvck, with a low metallic glaze. 



Labium yellowish white ; the anterior margin of the 

 median lobe produced into a pair o£ long narrow processes. 

 Labrum and clypeus blue-black, highly metallic. Gense 

 yellow. Hind margin of prothorax almost straight [ap- 

 parently well elevated, but the posterior lobe has been split 

 transversely]. Meso-metathorax marked with pale yellow, 

 as follows : — A short broad band on the mesinfraepisternnm 

 and the contiguous sclerite as far as the spiracle ; a long 

 broad band on the metinfraepisternura and the second lateral 

 suture ; a fine line bordering the inferior margin of the 

 metepimeron : the pectus with marginal streaks. 



Wings hyaline. Venation black. Pterostigma c. 1 mm. 

 long, dark reddish brown ; the anterior margin conspicuously 

 longer than the posterior margin, and the distal margin 

 conspicuously longer and more oblique than the proximal 

 margin. M3 arising a little beyond the subnodus, Rs a 

 little more remotely. Cu^ ending two cells beyond the 



14.14 



quadrangle. Postnodals ^^71 



u. 12 



Legs with spines relatively short. Coxse black and pale 

 yellow ; femora of fore and mid legs black, of hind legs 

 chocolate-brown; tibife chocolate-brown above, brownish 

 yellow below ; tarsi chocolate-brown ; claws reddish brown. 



Abdomen long and slender, somewhat inflated at segments 

 1-2 and 8-10; a tinge of chocolate-brown on some of the 

 segments dorsally ; 1 and 2 pale yellow at sides ; a pair of 

 lateral pale yellow spots at extreme base of 3-7, coming 

 more or less into dorsal view ; on 8 and 9 and on part of 7 

 the tergites bordered with pale yellow interno-ventrally ; 

 10 wholly pale yellow below ; iu ventral view the anterior 



