454 hymenoptera. 



76. Cerceris orientalis. B.M. 



Female. Length 10^ lines. — Reddish-brown: the tips of the 

 mandibles and the basal margins of the second and three follow- 

 ing segments of the abdomen black ; the clypeus elevated, deeply 

 and widely emarginate, forming a crescent-shaped appendage ; 

 the wings yellow, with a fuscous border to their apical margins ; 

 the nervures pale rufo-testaceous. 



The male differs in having the mesothorax and also the vertex 

 fuscous, the face reddish-yellow, and the apical joint of the 

 antennae bent. 



Hab. Madras. (Coll. Walter Elliott, Esq.) 



77- Cerceris vigilans. B.M. 



Male. Length 5-51^ lines. — Head and thorax black, opake ; 

 the clypeus and a line above terminating in a point at the ante- 

 rior ocellus, a broad stripe at the inner orbit of the eyes, yellow ; 

 the flagellura ferruginous beneath, the apical joint bent ; the 

 vertex and cheeks with a thin hoary jmbescence. Thorax : the 

 sides of the thorax, the metathorax and the coxa and femora with 

 thin hoary pubescence ; a white stripe on the tibiae outside, and 

 the basal joint of the intermediate tarsi, white ; wings fuscous, 

 with a darker cloud at their apex. Abdomen ferruginous, the 

 basal and two apical joints black ; an interrupted broad white 

 fascia on the basal segment. 



Hab. Madras. (Coll. Walter Elliott, Esq.) 



78. Cerceris pictiventris. 



Cerceris pictiventris, Dahlb. Hym. Europ. Synop. Sp. i. 498, 

 Hab. Java. 



79. Cerceris fuliginosa. B.M. 



Female. Length 6| lines. — Black, immaculate; the face 

 covered with cinereous pubescence; the head and thorax opake. 

 Thorax rugose, the scutellum longitudinally striated, the stria? 

 punctured ; the triangular space at the base of the metathorax 

 obliquely striated ; wings dark fuscous, the posterior pair paler. 

 Abdomen slightly shining, not very closely punctured. 



Hab. Celebes. (Coll. Madame Ida Pfeiffer.) 



80. Cerceris ferox. 



Female. Length 5^ lines. — Black, the head and thorax closely 

 punctured ; the head wider than the thorax, the face widest 

 anteriorly ; the clypeus, the carina above it, a lai'ge semicircular 



