HYMENOPTERA. 455 



spot on each side of the face, the face on each side of the cly- 

 peus, the mandibles, and a line on the inner side of the scape, 

 yellow ; an ovate spot behind the eyes, and two oblong spots 

 placed obliquely on the vertex, yellow. Thorax : a spot on each 

 side of the collar, another beneath the wings, the margins of the 

 tegulae, the scutellum, post-scutellum, sides and apex of the 

 metathorax, yellow ; the enclosed subcordate space longitudi- 

 nally striated at the base ; the wings slightly coloured, a fuscous 

 cloud on the anterior margin of the superior pair ; the legs yel- 

 low, a fuscous stripe on the femora above, and on the interme- 

 diate and posterior tibiae behind ; the apical joints of the tarsi 

 ferruginous, the posterior pair fusco-ferruginous. Abdomen : 

 the first segment somewhat elongate and deeply punctured ; the 

 following segments smooth and shining ; a minute yellow spot 

 towards the apex of the first segment above, two placed obliquely 

 at the base of the second, its apical margin with a narrow yellow 

 band, interrupted on each side, the third, fourth and fifth seg- 

 ments with narrow bands on their apical margins which are 

 broadly expanded at the sides of the abdomen ; beneath, the 

 second, third and fourth segments with a large angular spot on 

 each side. 



Hab. Sumatra. (Coll. F. Smith.) 



81. CERCERIS BICORNUTA. B.M. 



Female. Length 6 lines. Black : the clypeus, a tridentate 

 spot above, the mandibles, a line behind the eyes, two minute 

 spots on the vertex, and the scape in front, yellow ; the flagellum 

 fulvous beneath : the clypeus elevated, deeply emarginate, form- 

 ing two horns, rounded at their apex. Thorax : an interrupted 

 line on the collar, a band beneath the wings, which crosses the 

 breast, the tegulse, two large spots on the scutellum, the post- 

 scutellum, and a large macula on each side of the metathorax, 

 yellow; the wings slightly coloured, with a fuscous cloud extend- 

 ing from the base of the marginal cell to the apex of the wings ; 

 the legs yellow, more or less ferruginous above. Abdomen : the 

 sides of the basal segment and a band at the basal margin of the 

 second segment yellow ; another on the apical margin, as well as 

 on the apical margins of the three following ; beneath, yellow ; 

 the apical margins of the segments rufo-testaceous ; the apical 

 margin ferruginous. 



Hab. North China. 



82. CERCERIS FERVIDA. B.M. 



Female. Length 8 lines. Black, closely and strongly punc- 

 tured ; the face below the antennse yellow ; the clypeus produced 



x 5 



