142 HYMENOPTERA OF SARAWAK. 



tranverse and with a steep slope. Legs stout, basal joint of 

 front tarsi shorter than the tibiae ; the claws of moderate size ; 

 last joint of hind tarsi as long as the 3rd. Spiracles wider from 

 each other than to the apex of the petiole, owing to its great 

 width. 



Comes nearest to the American genera Christolia and Mesos- 

 tenoideus, but it cannot well be referred to either. Of the Orien- 

 tal genera it comes nearest to Skeatia. The two may be dis- 

 tinguished thus. 



-.^ Areolet square; apex of median segment only slightly oblique ; 

 labium large, distinctly projecting ; petiole not becoming 

 gradually wider towards the apex. Cratocryptus. 



Areolet narrow, distinctly longer than wide ; apex of median 

 segment with a distinct, oblique slope; labruni hidden; 

 petiole becoming gradually wider towards the apex. Skeatia. 



Cratocryptus macaficeps, sp. nov. 



Black ; the clypeus, except at the apex, the inner orbits — 

 the line roundly narrowed opposite the antennae, — an oblique, 

 somewhat triangular, mark below the eyes, a line on the pro- 

 notum, not reaching to the base, tegulse, scutellum, its keels 

 narrowly, the sides of the median segment broadly — half on 

 the metanotum, half on the pleuree and dilated on the inner 

 side above — the base of the propleuras, a mark below the hind 

 wings, rounded in front, transverse behind, a broad band on 

 the 1st and 2nd segments of the abdomen, a narrow band on 

 the 5th and the apical two entirely, yellow. Four front legs 

 fulvous, the hinder coxae, trochanters and femora of a darker 

 red colour, their tibiae and tarsi much paler, with the apex of 

 the hinder tibiae and the apical joint of the tarsi, black. Wings 

 hyaline, the nervur^s and stigma black, the areolet square, its 

 apical nervure faint. $ . 



Length nearly 8 ; terebra nearly 2 mm. 



Hab. Kuching. June. 



Basal joints of antennae brownish beneath, joints 6-14 

 white. Centre of face raised, rugosely punctured, the sides 

 sparsely punctured. Lower part of vertex at the ocelli and 

 upper part of front closely obliquely, the lower part more 



Jour. Straits Branch 



