486 Mr. P. Cameron on 



tlian broa'l. Areolet 5-anglccl, narrowed above ; the trans- 

 verse basal nervure is interstitial. Scutellum flat. Median 

 segment not completely areolated; it is longisli, its apex lias 

 an abrnpt oblique slope ; spiracles long, curved, rounded at 

 the top and bottom. Legs short, stout ; the hinder cox^e 

 large, roundly produced backward ; the tarsi spinose ; the 

 middle joints on the front pair narrowed at the base ; the 

 basal joint incised at the base ; the apex of the tibiae spinose ; 

 the claws are large, curved, bare. Abdomen witli seven 

 segments, its apex bluntly pointed ; the last seguient well 

 developed all round ; the ventral fold reaches to the base of 

 the ovipositor; the cenchri are stout. 



The median segment is less distincily areolated than in the 

 Ichneumonini ; the hinder coxaj project backward more than 

 usual ; there is a short nervure on the cubital nervure, as in 

 Ichneumon^ and another on the outer side of the recurrent 

 nervure, this latter being a somewhat uncommon feature. 

 '1 he median segment is al^o rather more elongated than 

 usual. The mandibles, when they touch at their apices, 

 leave an open space between them and the labrum, as in the 

 division Cyclostomi of the Braconidai ; the apices of joint3 

 1-4 of the tarsi bear long stout spines. The thorax, com- 

 pared with the abdomen, is rather longer than usual ; the apex 

 of the hinder femora reaches to the end of the fourth abdo- 

 minal segment. There can hardly be said to be teeth on the 

 median segment, but the lateral keels are dilated on the top 

 of the apical slope. Gastrocoeli indistinct. 



This genus does not fit into any of the tribes as defined by 

 Foerster and Ashmead. The edentate mandibles might 

 place it with the lieresiarchini, but in that group they are 

 acute at the apex, not bioad and blunt as in this genus. 

 The mandibles are so different from anything hitherto known, 

 and form such a distinctive niark, that the genus might well 

 form the type of a new tribe, which is readily separated from 

 all others by the short, curved, broad, edentate, and (at the 

 apex) broadly rounded mandibles, which are also broadly 

 hollowed at the base on the outer side. The eyes are small 

 and appear more widely separated from the base of the 

 mandibles than usual, 'i'he antennne are thicker than in the 

 ichneumonini. The bluntly pointed apex of the abdomen, 

 with the well-developed last segment and ventral fold, refer 

 it to the division Amblypygi. The sheaths of the ovipositor 

 project largely. 



Gyrodonta jlavomaculata, sp. n. 

 Riifa, flavo-maculata, abdominis apice nigro ; pedibus rufis, ooxis 



