386 Mr. R. E. Turner on 



the distance between the tegulae and the anterior margin of 

 the mesonotum ; pronotum unarmed. Mesonotura coarsely 

 transversely striated, with a subtriaugular depression in the 

 middle of the anterior margin, beyond the apex of the 

 depression *a shallow and very narrow impressed line runs 

 almost to the apex of the median lobe. Pleurae coarsely 

 and irregularly reticulate ; scutellum and postscuteilum 

 transversely striated ; median segment coarsely reticulate. 

 First abdominal segment slender, nearly as long as the 

 remainder of the abdomen, the apical half gradually, but 

 very slightly, broadened and compressed laterally; the 

 remaining segments distinctly compressed laterally and pale 

 luteous brown at the apex. Intermediate and hind coxae 

 transversely striated : hind metatarsus nearly half as long 

 again as the four following joints combined. Third trans- 

 verse cubital nervure only fully defined at each end, the 

 median portion indicated by a white scar ; second transverse 

 cubital nervure almost obsolete, only indicated by a short 

 scar at the cubital end. Nervulus interstitial ; lower 

 abscissa of the basal nervure shorter than the upper, the 

 basal nervure separated from the base of the stigma by a 

 distance fully equal to its own length. First recurrent 

 nervure received shortly before the apex of the first cubital 

 cell. 



Hab. Chapa, Tonkin; June (/?. Vitalis de Salvaza). 



This is allied to rufobalteatus, Cam., but differs in the 

 much longer terebra, in the shorter apical joints of the hind 

 tarsi, in the stouter and differently coloured antennae, and 

 in the yellower colour of the wings. I do not think that 

 Kieffer's genus Tetraulacinus can be kept separate from 

 Pristaulacus, the second transverse cubital nervure, on the 

 presence of which it is founded, being almost obsolete. 



Pristaulacus jlavipennis, Cam. 



Aulacus flavipennis, Cam. Proc. Manchester Lit. & Phil. Soc. xxvi. 



p. 134 (1888). 

 Aulacus magnificus, Schlett. Ann. Naturh. Hofnius. Wien, iv. p. 509 



(1889). $d. 



Hab. Ceylon. 



Dalla Torre suggests that congener, Westw., may apply to 

 this species, but I have previously shown that congener is a 

 synonym of lateritius, Shuck. 



