146 Arthur M. Lea: 



with a feeble medio-basal node, on each side of which is a 

 short oblique stria ; lower surface rather strongly convex 

 along middle. Legs rather thin. Length 1| mm. 



Hab. — Victoria : Lovat, in nest of small black ant (H. W. 

 Davey). 



The type is probably a female, but was described as the 

 secondary sexual characters in this genus are seldom very 

 pronounced, and the numerous long straggling hairs with which 

 it is clothed should render it very distinct. It is more convex 

 and with decidedly longer hair than in odeivahnii, and the 

 base of the prothorax is not as in sculphis. The median line of 

 the prothorax is continued across the basal impression, but 

 the latter is not forced backwards in consequence, as it is in 

 other species. 



Plectostenus, u.g. 



Head rather small. Eyes small. Antennae thin. Palpi 

 small, with three joints visible, the first small and almost 

 concealed, second thin, not very long and inflated at apex, third 

 about as long as second, elliptic, ob-ovate and terminated by a 

 seta. Under surface with a distinct conical projection on each 

 side concealing base of palpi. Prothorax longer than wide, with 

 a transverse sub-basal impression, median line absent. Elytra 

 rather small, with two short dorsal striae on each. Metasternum 

 and abdomen elongate. Legs rather long and thin ; hind 

 coxae almost touching ; tarsi thin, first joint very short, second 

 elongate, third somewhat shorter and terminated by a single 

 clavV. 



Allied to Macroplectus but narrow, the club and abdomen 

 and under surface of head different. 



Llectostenus gracilicornis, n.sp. (Fig. 7.) 



3- Reddish castaneous, tarsi and palpi paler. With ex- 

 tremely fine pubescence. 



Head strongly constricted near base ; convex between eyes, 

 with a minute central fovea ; a rather large fovea close to 

 each eye, and open in front. Antennae thin, basal joint par- 



