NEW AND LITTLE KNOWN HYMENOPTERA. 245 



Male: Length 10^ lines ; expanse 15 lines. 



Description : 6 Head rather broader than the thorax ; mandibles 

 light brownish yellow, much produced, forming a long beak ; clypeus 

 lengthened slightly convex, ending in an acute tooth, from which a 

 short raised carina or ridge runs vertically up ; the front below r the 

 antenna? and the clypeus, dull opaque yellow, clothed with a fine short 

 silky white down ; antennae, the scape, and the basal and two apical 

 joints of the flagellum pale brownish yellow, remainder of the 

 flagellum brown ; vertex and cheeks brow*n, the former garnished with 

 a few long silky pale hairs ; ocelli in an equilateral triangle, the 

 anterior ocellus larger than either of the two posterior ones. Thorax 

 dark brown, the posterior margin of the prothorax having a band of 

 yellow, which is interrupted in the middle, but widens out considerably 

 on the lateral angles ; the tegulae, two spots on the sides below the 

 wings, a sub-triangular spot on either side at the base of the scutellum, 

 the anterior margin of the postscutellum, and a long oval macula 

 on the posterior angles of the metathorax opaque yellow ; wings 

 hyaline, of a light yellowish brown colour, somewhat darker along 

 the costal margin ; the nervures testacous ; the stigma and radial 

 cells lengthened, three complete cubital cells, the 4th almost 

 complete, the 2nd cubital cell long, its sides forming a paralle- 

 logram, receiving both recurrent nervures, the 1st very near its base, 

 the 2nd near its apex ; the 3rd cubital cell almost square ; legs testa- 

 ceous yellow, the claws of the tarsi with a distinct tooth, the inter- 

 mediate and posterior tibiae with two spines. Abdomen, the 1st 

 segment forms a long petiole, distinctly thickening from base to apex ; 

 2nd segment dark brown, its base clothed with a fine short silky 

 golden pile ; 3rd and 4th segments dark brown, with broad lateral 

 fasciae of golden pile ; 5 th and apical segments testaceous brown at 

 their base, with like lateral fasciae of golden pile, and a brown spot 

 beyond them on each side ; below the abdomen has the petiole ferrugi- 

 nous, the 2nd and following segments dark brown, the 2nd segment 

 with a spot of golden pile at its base, the remaining segments with 

 broad sub-interrupted marginal bands of the same. 



This very beautiful insect was kindly sent to me by Mr. E. E. 

 Green, who has also since been good enough to forward a few of its 

 nests with the following note: — "I am now sending you by parcel 



