122 HYMENOPTERA 



Thorax : tlie lateral margins of the prothorax more or less yellow ; two 

 ovate spots beneath the wings, the scutellum and post-scutellum, and 

 a spot on the posterior coxse above, yellow, the latter sometimes obso- 

 lete; wings flavo-hyaline, the nervures fusco-testaceous ; the inferior 

 margin of the stigma, and the nervures at the base of the wings, pale 

 ferruginous ; occasionally a yellow spot on the disc of the thorax ; legs 

 ferruginous, the coxae being more or less black. Abdomen ferruginous, 

 impunctate, smooth and shining, sometimes a little inclined to become 

 fuscous towards the apex. 



Length, 6h—7 lines. 



This is. a variable insect : in some examples there is a yellow or 

 ferruginous spot on the metathorax, situated in the horseshoe-shaped 

 enclosed space ; other specimens have the two apical segments of the 

 abdomen black, or more or less so ; a series of examples present other 

 slight variations. 



Genus-MESOLEPTUS. 



Gravenhorst. 

 Peduncle of abdomen narrow. Legs slender and elongated. 

 Antcnnse setaceous, more or less convolute in the females. Anterior 

 wings with a small, triangular areolet, generally irregular, often 

 petioled, sometimes incomplete. Abdomen smooth, shining, with a 

 long petiole ; ovipositor not exserted. 



M. MiiLLERi. Butler, Voy. " Ereb." and "Tensor," Ins., p. 27. 



Head black ; mouth orange ; antennae long, black ; thorax black ; 

 abdomen glossy, orange-tawny ; basal two-thirds of first segment 

 black ; legs orangc-tawny ; wings hyaline, with green and rosy re- 

 flections ; costal stigma black. 



Length, 51 lines. 



Christchurch (Wakefield) . 



Parasitic upon Caccecia gallicolens. 



The scutellum and post-scutellum are black, like the rest of the 

 thorax. 



Sub-Family — Ckyptin^. 

 Abdomen narrowly pctiolate, elongate; ovipositor long. 



Genus-MESOTENUS. 

 Gravenhorst. 

 Antenna} as long as or longer than the body ; in the males setaceous, 

 the joints much longer than broad, except some of the last, which are 



