HYMENOPTERA. 



463 



98. Cerceris viduata. B.M. 



Female. Lenpitli 6 lines. — l^laek : the punctures deep and 

 close on the face, but more distant on the vertex ; the clypeus 

 elevated, forming a somewhat conical tubercle, subacute at the 

 apex, the extreme a])ex black, the rest of the clypeus yellow ; 

 a line on the inner orbit of the eyes, not running higher than the 

 antenna?, a large macula on the anterior angles of the face, the 

 middle of the mandibles outside, and the carina between the 

 antennai, yellow ; a yellow stripe crossing the vertex behind the 

 eyes; the extreme base of the flagellum beneath fulvous; the 

 face with short golden pubescence at the sides. Thorax : the 

 mesothorax opake, the punctures shallow and distant ; an inter- 

 rupted line on the collar, a spot beneath the wings, the front of 

 the tegulae, a spot on each side of the scutellum, the post-scu- 

 tellum, two longitudinal stripes on the metathorax, extending 

 from the apex halfway towards the base, yellow ; the fore wings 

 with a fuscous cloud along their anterior margins ; the anterior 

 legs with a yellow stripe on the femora beneath ; the tibia? in 

 front and the basal and apical joints of the tarsi ferruginous ; the 

 intermediate and posterior legs with the coxae and femora be- 

 neath, the intermediate tibise in front, the posterior tibiae at their 

 bnse beneath, yellow; the basal joint of the intermediate and 

 posterior tarsi pale testaceous. Abdomen : the first segment 

 black and strongly punctured, the apical margin yellow; the 

 rest of the abdomen ferruginous, with a fuscous stain in the 

 middle of the first segment, the following segments more or less 

 fuscous ; the second segment subpetiolate, with a narrow yellow- 

 band on the apical margin ; beneath, the first segment yellow 

 and carinated in the middle, the second yellow with a ferruginous 

 stain in the middle. 



This may possibly prove to be the female of the C. binodis of 

 Spinola ; but, independent of the different colouring of the ab- 

 domen, the sculpture is very different : in C. binodis the thorax 

 is strongly punctured, whilst in the present species the punctures 

 on the mesothorax are very delicate, not being visible without a 

 magnifying power. 



Hab. Brazil (Para). (Coll. H. W. Bates.) 



99. Cerceris vulpina. B.M. 



Male. Length 5 lines. — Black, punctured : the face, scape 

 in front, mandibles at their base, a large spot on the cheeks, a 

 minute one behind the eyes, two minute ones on the vertex, 

 vellow ; the flagellum pale testaceous beneath. Thorax : an 

 interrupted line on the collar united to a spot beneath the wings, 



