Indo-Chinese Uymenoptera. 85 



ochracco ; clypeo labroquo luteis ; gonis, raandibulis, apice ex- 

 cepto, aiitennis articulis quatuor basalibus, scutollo, tibiis tarsia- 

 que fusco-ferrugineis ; pronoto margine postico tegulisqiie ochra- 

 ceis ; alis subhyalinis, anticis basi et dimidio costali fortiter 

 iiifuscatis, veuis fuscis. 

 Long. 15 mm. 



? . Clypous broad and transverse at the apex, not emar- 

 ginate; labruni large, very broadly rounded at the apex. 

 Antennas longer than the thorax, the tliird joint about three 

 times a3 lonoj as the fourth ; fifth as long as the fourth, 

 gradually thickened from the base, and very distinctly sepa- 

 rated from the club; sixth joint nearly as broad at the apex 

 as long, not fused into the club ; the joints beyond the sixth 

 fused together, about twice as long as broad. Front and 

 vertex closely and finely punctured-rugose ; clypeus finely 

 punctured and sparsely clothed with short black hairs ; vertical 

 area longer than broad, the lateral grooves only distinct poste- 

 riorly. Thorax finely and closely punctured-rugulose ; scu- 

 tellura moderately convex, with a distinct but shallow median 

 groove. Propodeum sparsely punctured, with a strongly 

 raised longitudinal carina wiiich is almost tuberculate at the 

 base. Abdominal tergites opaque, very finely and closely 

 punctured. Third transverse cubital nervure straight, the 

 second oblique. 



Hah. Chapa, Tonkin, May 25, 191G. 



This seems nearer to the East Siberian species C. gracilenta, 

 ilocs., and to the Formosan C. formosana^ Ensl., tlian to the 

 two species already described from Tonkin, but is very 

 differently coloured. The club of tiie antennae is much more 

 slender than in the European C. amerincc^ corresponding in 

 this character with the other Oriental species. 



Ahia vitalisij sp. n. 



2 . Purpurea ; mandibulis, palpis, antennis tarsisque nigris ; 

 valvuiis tlavis ; alis flavis, anticis cellula cubitali apicali infus- 

 cata ; venis testaceis, apice fuscis. 

 Long. 14 mm. 



!i^ . Robust, the whole insect with short black hairs. 

 Front and clypeus closely and finely punctured, vertex much 

 more sparsely punctured, cheeks smooth and shining. Clypeus 

 very feebly emarginate at the apex, almost transverse. Eyes 

 strongly divergent towards the clypeus. Antetmae seven- 

 jointed, tliird joint slender, a little thickened towards the apex, 

 twice as long as the fourth ; fourth and fifth joints subequal 



