Indo- Chinese Hymenoptera. 85 
ochraceo ; :clypeo labroque luteis; genis, mandibulis, apice ex- 
cepto, antennis articulis quatuor basalibus, seutello, tibiis tarsis- 
que fusco-ferrugineis ; pronoto margine postico tegulisque ochra- 
ceis; alis subhyalinis, anticis basi et dimidio costali fortiter 
infuscatis, venis fuscis. 
Long. 15 mm. 
?. Clypeus broad and transverse at the apex, not emar- 
ginate; labrum large, very broadly rounded at the apex, 
Antennee longer than the thorax, the third joint about three 
times as long as the fourth; fifth as long as the fourth, 
gradually thickened from the base, and very distinetly 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- 
viorly, Thorax finely and closely punctured-rugulose ; scu- 
tellum moderately convex, with a distinct but shallow median 
groove. Propodeum sparsely punctured, with a strongly 
raised longitudinal carina which is almost tuberculate at the 
base. Abdominal tergites opaque, very finely and closely 
punctured. ‘Third transverse cubital nervure straight, the 
second oblique. 
Hab, Chapa, Tonkin, May 25, 1916. 
This seems nearer to the Kast Siberian species C. gractlenta, 
Moes., and to the Formosan C. formosana, Hnsl., than to the 
two species already described from Tonkin, but is very 
differently coloured. ‘The club of the antenne is much more 
slender than in the Huropean C. amerine, corresponding in 
this character with the other Oriental species, 
Abia vitalisi, sp. n. 
@. Purpurea; mandibulis, palpis, antennis tarsisque nigris ; 
valvulis flavis ; alis flavis, anticis cellula cubitali apicali infus- 
cata ; venis testaceis, apice fuscis. 
Long. 14 mm. 
Q. 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. Hyes 
strongly divergent towards the clypeus. Antenne seven- 
jointed, third joint slender, a little thickened towards the apex, 
twice as long as the fourth ; fourth and fifth joints subequal 
