io Cameron, Hymenoptera Orientalia. 



Antennae black, bare, a broad white band near the 

 middle. Head black ; a mark close to the eyes oppo- 

 site the ocelli, a mark touching the eyes immediately 

 under the antennae, and having a somewhat roundish 

 projection issuing obliquely from above its middle, the 

 mandibles (except the teeth) and the palpi, whitish-yellow; 

 the face above the clypeus irregularly striated ; front 

 depressed, especially over the antennae, where there is a 

 straight keel in the centre ; below the ocelli are a few 

 oblique stout striae. Pro- and meso-notum smooth, 

 shining, impunctate ; the middle lobe of the mesonotum 

 well developed ; the pro- and meso-pleurae stoutly longi- 

 tudinally striolated, except the former above at the base, 

 where there is a smooth triangular spot ; and the apex of 

 the mesopleurae where the striations only extend to the 

 lower side. The base of the median segment before the 

 keel is smooth, the rest of it closely transversely striated ;. 

 the metapleurae irregularly rugosely punctured. The 

 following yellow marks are on the thorax : The tegulae, 

 scutellum, post-scutellum, an elongated triangular mark 

 before the spiracles ; a smaller one in front of and above 

 the hinder coxae ; and a J_-shaped mark on the median 

 segment extending from near the transverse keel to the 

 apex of the segment, the cross piece being thicker than 

 the longitudinal. The coxae are black, except the anterior 

 at the extreme apex ; the middle pair have a small mark 

 at the base, and the hinder part a large yellow mark 

 extending from the base to near the apex, its inner end 

 being more prolonged than its outer ; the fore coxae and 

 trochanters are whiter in tint than the others; the hinder 

 trochanters are black, this being also the case with the 

 apex of the femora, and to a less extent the base of the 

 tibiae ; the four front tarsi are dark fuscous ; the apex of 

 the hind tibiae, the base of the metatarsus broadly, and 

 the extreme apex of the tarsi, black ; the fore tarsi are 



