HYMENOPTEBOUS FABIILY STEPHANID^. 805 



Black; cheeks and temples yellowish; mouth-parts, base of 

 antenna?, anterior tibise mostly, and all tarsi yellow-red. Wings 

 hyaline, stigma brown, tegulse basally yellow. 



Length 11 mm. 



Habitat: Sinbang, New Guinea. Type in Hungarian National 

 Museum. 



5. BILINEATUS Elliott. 



Diastephanus hilineatus Elliott (2), p. 162, $ . 



2 . Head finely trans-striate ; two carinae between the 

 posterior ocelli; all frontal tubercles distinct ; posterior margin 

 of head bordered. Second flagellar joint one and a, half times as 

 long as first; third longer than second, but shoi-ter than fii'st and 

 second together. JSTeck of prothorax elongate, finely trans-striate, 

 remainder smooth; mesonotum subglabrous, very diffusely punc- 

 tate ; pro- and meso-pleurse very finely trans-striate ; metapleurse 

 and median segment cribrate punctate, not separated. Petiole 

 trans-striate, as long as rest of abdomen, Avhich is smooth 

 and shining. Terebra shorter than body, sheaths rufescent, 

 with a subapical band ^ mm. broad, before the -g- mm. broad 

 black apex. Hind coxae and femora distinctly, their tibise less 

 strongly trans-striate, the femora tridentate, tibife compressed to 

 middle. 



Black ; head rufescent, mandibles except extreme apex, frons 

 centrally broadly and orbits up to the level of the anteinor 

 tubercle flavous ; point of abdomen below terebra white. 

 Anterior knees pale rufescent, hind legs darker, with knees and 

 metatarsi pale. Central femoral tooth white. Wings hyaline, 

 ii'idescent ; stigma and nervures brown. 



Length S-Sg mm.; abdomen 5 mm. ; petiole 2| mm.; terebra 

 7 mm. 



Habitat : Pusa, Bihar; G. R. Dutt, 12. v. 09. Ohapra, Bengal; 

 Mackenzie. 



The whole of the lower part of the head is white, excepting 

 the more or less narrow rufescent lines separating the frons from 

 the inner orbits. The sculpture of the head, the colour of the 

 terebra and that of the femoral teeth will suffice to distinguish 

 this species from all those with tridentate hind femora yet 

 known. (May 1919.) 



6. GRACILIS Kieff. 



Diastephanus gracilis Kieff. (5), p. 28, 5 . 



5 . Body, especially abdomen, unusually slender. Frons dull 

 and densely trans-striate, arcuately round anterior ocellus; 

 vertex with five transcarinse ; occiput rugose, without central 

 impression ; posterior margin of head simple. Second flagellar 

 Joint little longer than first ; third shorter than first and second 



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