292 JCIIXEUSIOKIDJE. 



vertex smooth and nitidulous, with sparse short pilosity, that of 

 the face longer and denser. Antennte rufo-testaceous, not as long 

 as the body, with dense pale pubescence and not strongly attenuate 

 apically. Thorax smooth, shining and immaculate, with the 

 pleurae and metanotum with dense long pale hairs ; propleura? 

 apically crenulate, mesopleura3 finely punctate, with the apical 

 half broadly excavate; metnpleurae longitudinally bicarinate on 

 either side of the spiracles. Scutellum and postscutellum entirely 

 flavous. Abdomen smooth and shining, deep black, with the third 

 and apical half of the second segment flavous. Legs black and 

 stout, with the hind tarsi infuscate; front legs (except basally) 

 and a large external mark on their femora, basal half of inter- 

 mediate tarsi and of their tibiae and apices of their femora, and 

 basal two-thirds of hind tibiae, flavous. Wings hyaline, with the 

 stigma and nervures infuscate, and the tegulse flavous. 



Lenyili 7 millim. 



ASSAM : Khasi Hills (Rotlmey*). 



Type iu the Oxford Museum. 



Genus XANTHEXOCHUS, gen. nov. 



GENOTYPE, X. scittellatus, Mori. 



Body testaceous and nitidulous ; size not small. Head strongly 

 transverse and abruptly constricted behind the eyes ; frons concave 

 and centrally prominent ; face protuberant and not discrete from 

 the clypeus; occiput vertically declivous from tho ocelli. Meta- 

 thorax with basal area obsolete ; areola transverse and hexagonal, 

 carinate throughout ; petiolar area longer than areola and obliquely 

 declivous; dentiparal longer than external area?; spiracles elongate. 

 Scutellum strongly deplanate and laterally bordered to near apex. 

 Basal abdominal segment not longer than apically wide, broadly 

 sessile and not bicarinate:ljeyond its centre; valvula3 large, terebra 

 not exserted. Legs very stout ; posterior calcaria unequal in 

 length. Wings somewhat ample and not narrow ; areolet wanting ; 

 upper basal forming right angle with median nervure ; nervellus 

 antefurcal and intercepted near its lower angle. 



Hanfje. Assam. 



This genus bears the same relationship to E,roc7nis that Xaniho- 

 pimpla does to Pimpla. It will at once be recognised from all 

 described EXOCHIDES by the strongly deplanate and laterally bor- 

 dered scutellum, the elongate petiolar area, the transverse areola, 

 which is basally distinctly discrete from the very small basal area, 

 the conspicuous frontal tubercle find the subtransverse basal abdo- 

 minal segment. The pale colour and large size are remarkable. 

 I have seen but a single species. 



