79 



Platygerrhus tasmaniensis, new sp. 



9 • The same as australiensis but smaller, and the fore- 

 wings in addition to bearing the same pattern have their tips 

 also fuscous and the backward branch of the loop is more 

 distinct. Moreover, in this species the second funicle- joint is 

 shorter and also the pedicel in relation to the club. Length, 

 3 mm. 



d' . Not known. 



Described from tw^o specimens. 



Hah. — Tasmania: Ilobart (A. M. Lea). 



Type. — I. 1254, South Australian Museum. The two 

 specimens above (2 pins) and a slide bearing cephalic and pos- 

 terior femora and antennae. Later a male was found labelled 

 in addition ''Reared from wood." 



Amerostenus, new gen. 



9 • Agreeing tolerably well with Merostenus, Walker, 

 but the antennae with four ring- joints and a 3- jointed club, 

 13-jointed ; flagellum cylindrical, the first two funicle-joints 

 subequal, longest of the flagellum, each over a half longer than 

 the fourth (distal) funicle- joint, which is subquadrate. Parap- 

 sidal furrows complete ; scutellum with a transverse groove 

 before apex. Propodeum with a median carina, which divides 

 at base; its spiracle round. Postmarginal vein nearly as long 

 as the marginal, the stigmal shorter. Pronotum rather large. 

 Abdomen long and pointed, conic-ovate, produced beneath 

 near base. Forewings obscurely stained. Femora subsimple. 

 Scutellum broadening distad. Mandibles 4-dentate, the inner 

 tooth truncate and broad. Eyes naked. 



d" . The same, the abdomen depressed. 



Type. — Amei^ostemis australiensis, new sp. 



Amerostenus australiensis, new sp. 



9 • Bright metallic blue-green, the antennae, coxae, and 

 femora concolorous, also the tibiae along proximal half, the 

 remainder of the legs reddish-brown. Venation dusky-brown. 

 Forewings obscurely stained. Body densely reticulated, the 

 scutellum and parapsides not as rough as the scutum. Length, 

 5'20 mm. 



S . The tibiae all dark. Length, 4 '50 mm. 



Described from, one male and three females on a card. 



Hah. — Tasmania: Hobart (A. M. Lea). 



Type. — I. 1255, South Australian Museum. The above 

 specimens and a slide with a head. Later two more females 

 were found belonging to the same series and labelled "Bred 

 from wood." 



