48 Cameron, Hymenoptera^ from Greymouth, 



thorax freshly covered with hair. In 5. margznatuSy 

 however, the head and thorax are quite black, instead of 

 brownish or mahogany-coloured, the base of the antennae 

 black instead of red, while the first and second transverse 

 cubital nervures are curved, in 6". Wakefieldi straight 

 and oblique. 



Under the name of Agenia brouni, Signor Gribodo 

 {Bull. Soc, Entom. Ital. XVI., 1884) describes a species from 

 Howich, which agrees closely in coloration, &c., with 

 ^. Wakefieldi, but the latter is a Salius not an Agenia. 



Salius FUGAX Fab. {inaculipennis Sm.). 



This is a rare species, and may be known from the 

 others by its smaller size and by having a stigmal as well 

 as an apical fuscous cloud in the wings. 



b. Black species. 



Salius monachus White (see Smith). 

 One example of this large species. 



Salius triangularis, sp. nov. 



Long. 10 mm. 



Agrees with S. monachus Sm. in being entirely black 

 and in having the head and thorax covered with long 

 black hair, but is not half its size ; and otherwise may be 

 readily known from it by the basal abdominal segment 

 being triangular as seen from the side, the centre being 

 sharp, the base and apex falling obliquely, whereas in 6". 

 monachus the middle is broadly rounded and not sharply 

 differentiated. 



Scape of antennae densely covered with black hair ; 

 the second and third joints bare ; the rest missing. The 

 head covered all over with long black hair, shining ; the 

 apex of the mandibles rufous ; the hinder ocelli separated 

 from each other by half the distance they are from the 

 eyes. Thorax covered with longish black hairs ; the pro- 



