42 p. CAMERON, HYMENOPTERA OF RHE DUTCH EXPEDITION 



discoidal cellule is closed. Mesouotum clearly trilobate ; the 

 middle lobe raised. Mesosternum bordered by a distinct furrow. 

 Fifth tarsal joint shorter than the preceding two united, as 

 long as the third. The body is smooth and shining, the 

 antennse are long, filiform, the apex of the scape below pro- 

 jects into a stout tooth. 



This genus, in the arrangement of Szepligeti (Gen. Hym. 

 p. 46), comes nearest to Exohracon, which was based on a 

 Papuan Insect, Bracon quadriceps Smith ; Exohracon should be 

 known by the pleurae not being furrowed, by the radius not 

 reaching to the apex of the wing, by the small stigma and 

 by the last tarsal joint being as long as the preceding 2 

 \inited. 



Siragra nitida sp. nov. 



Red, the antennae and abdomen black, the hind tibiae slightly, 

 the hind tarsi more distinctly infuscated, the apices of the 

 abdominal segments slightly lead coloured, the sides and ventral 

 surface thickly covered with white pubescence ; wings uniformly 

 fuscous, highly iridescent, the nervures and stigma black. 5, 



Length 10 m.m. ; terebra 7 m.m. 



Etna Bay. 



Face finely rugose, almost opaque, thickly covered with 

 longish fuscous pubescence ; the rest of the head and thorax 

 smooth and shining ; the metanotum is more densely pilose 

 and with the pile longer than it is on the rest of the thorax. 

 Temples nearly as long as the eyes, rounded. Palpi long, 

 pale testaceous. Mesonotum clearly trilobate, the central lobe 

 raised and with an indistinct, narrow furrow doAvn the centre. 

 The apex of the metanotum is finely, closely punctured ; in 

 its centre is an area, not very clearly defined, whose upper 

 half is narrow eil to a sharp point; the lower of equal width. 

 Abdomen smooth, shining for the most part ; the first segment 



