Some Neio Species of Hymcuoptera. 331 



narrowed in front ; the recurrent nervure is received in the middle ; 

 the transverse median is almost interstitial ; the disco-cubital angled 

 and bullated in the middle. 



BKACONEME. 



Gen. CARDIOCHILES, Nees. 

 Cardiochiles nigromaculatus, Cam. 



One example. The size and form of the black markings on this 

 species vary. For example, the black mark on the base of the 

 mesonotum may be of equal width or it may be gradually narrowed 

 towards the apex, i.e., triangular ; there may be a black mark on the 

 base of the abdomen. The antennae may be 37-jointed. The 

 post-scutellum is flat, stoutly keeled laterally. The South African 

 species may be grouped thus : — 



1 (2) Back of abdomen, pleurae, sternum, and 



mesonotum black fulviventris, Cam. 



2 (1) Back of abdomen and mesothorax not entirely 



black 



3 (4) Thorax entirely black nigricollis, Cam. 



4 (8) Thorax only maculate with black 



5 (8) Mesonotum with three large black marks 



6 (7) Pleurse largely and the base of the legs black . . nigromaculatus, Cam. 

 7(6) Pleurss immaculate trimaculatus, Cam 



testaceipes, Cam., 

 olim testaceus. 

 Cam., non Kreich., 



non Szep. 

 8 (4) Thorax not maculate with black testaceus, Kriechb. 



(Cameroons.) 



I fancy that a series of specimens would show that the size and 

 number of the black markings on the maculate species vary. 



EVANIID.E. 

 Gen. EVANIA, Fab. 



EVANIA BROOMI, Sp. UOV. 



Black ; the apex of the fore femora and the tibiae and tarsi obscure 

 testaceous ; wings hyaline, the nervures pale testaceous, the basal 

 ones black; the metasternal process not forked at the apex. Pro- 



