464 



HYMENOPTERA. 



a curved line on each side of the pectus, two in front of the an- 

 terior coxae, two on the prothorax beneath, the tegulse, two lines 

 on the disk of the mesothorax, a spot on each side of the scutel- 

 lum, the post-scutellum, and the metathorax, yellow ; the sides 

 of the subcordate space, and an angular spot beneath it, black ; 

 the anterior margins of the fore wings fuscous ; the coxse and 

 trochanters yellow beneath, the femora and tibia yellow in front ; 

 the anterior and intermediate tarsi yellow. Abdomen : the basal 

 segment yellow, with a black spot in the middle of its base ; the 

 four following segments with a narrow yellow band on their 

 apical margins. 



Hab. Brazil. 



100. CERCERIS BINODIS. B.M. 



Cerceris binodis, Spin. Ann. Soc. Ent. Fr. x. new ser. ll/. t. 3. 



Diamma Spinole, Dahlb. Hym. Europ. i. 225. 1. 



Diesmus Spinolae, Dahlb. Hym. Europ. Synop. Spec. i. 502. 1. 



Hab. Cayenne; Brazil (Villa Nova). (Coll. H. W. Bates.) 



This species has the appearance of a wasp, closely resembling 

 some of the species of the genus Zethus ; on closer inspection it 

 will be found to be a Cerceris, differing from the generality of 

 the species in having the basal segment ovate, and the second 

 campanulate : in other respects it offers no remarkable differ- 

 ence. The neuration of the wings is identical with Cerceris. 



101. CERCERIS CRIBROSA. 



Cerceris cribrosa, Spin. Ann. Soc. Ent. Fr. x. new ser. 119. 



74$ <J(1841). 



Ha b. Cayenne. 



102. CERCERIS DILATATA. 



Cerceris dilatata, Spin. Ann. Soc. Ent. Fr. x. new ser. 118. 73 $ 



(1841). 



Hob. Cayenne. 



103. CERCERIS CHILENSIS. B.M. 

 Cerceris Chilensis, Spin. Gay's Chili, vi. 344. 1. 



Hab. Chili. (Coll. F. Smith.) 



