292 iciiis'kumonid.t:. 



vertex smooth and nit.idiilous, with sparse short pilosity, that of 

 the lace longer and deuser. -^H/emia' rufo-testaeeoiis, not as long 

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

 jipically. Thorax smooth, sliiiiing and iminaciilate, with the 

 pleunc and metanotuiu witli dense long pale hairs ; propleurse 

 apically creniilate, mesoplenra) finely punctate, with the apical 

 half bioadly excavate; nietapleunc longitudinally bicarinate on 

 either side of the spiracles. ScnteMvm and postscutelhnn entirely 

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

 and apical half of the second segment flavous. Lerjs 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 tibise and apices of their femora, and 

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

 stiiima and nervures infuscate, and the tegulte flavous. 



LeiKjth 7 uiillim. 



Assam: Khasi Hills {Rothncy). 



Type in the Oxford Museum. 



Genus XANTHEXOCHUS, gen. nov. 



Genotype, A". smtdJaitts, 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 

 tlie clypeus; occiput vertically declivous from the 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 areae; spiracles elongate. 

 tScutellum strongly deplanate and laterall}'^ bordered to near apex. 

 Basal abdominal segment not longer than apically wide, broadly 

 sessile and not bicarinate beyond its centre ; valvulte 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. 



Jian(/e. Assam. 



This genus bears the same relationship to ExocJais that Xaniho- 

 jnmpln does to Pimpla. it will at once be recognised from all 

 described ExocniDES by the strongly de])lanate and laterally bor- 

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

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

 the conspicuous fi'ontal tubercle and the subtransverse basal alxlo- 

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

 I have seen but a single species. 



