DESCRIPTIONS OF NEW EYMENOPTERA. 439 



middle with black ; the tarsi yellow. Abdomen smooth and shining ; 

 the petiole is smooth and is half the length of the second segment. 

 Halticella oknatipennis, sp. nov. 



Nigra, basi flagello antennarum pedibusque anterioribus rufis ; alis 

 hyalinis, fusco-bifasciatis. 9 . 



Long : 0-6 m.m. 



Habitat : Deesa. 



The scape of the antennae reaches to the top of the head, has a slight 

 curve and is somewhat dilated on the top ; it is more or less rufo-testa- 

 ceous, as is also the base of the flagellum. The head is closely covered 

 with silvery pubescence, closely rugosely punctured, except on the 

 frontal depression, which is smooth in the centre, or at least only acicu- 

 lated ; the eyes on the inner side are bordered by a distinct keel ; the 

 antennal tubercles are smooth and shining. Thorax entirely black, 

 closely and regularly punctured ; the scutellum ends in two bluntly 

 pointed teeth. Median segment opaque, irregularly longitudinally 

 keeled ; the two central keels are distinct and are united at top and 

 bottom, forming thus an enclosed area, which is widest below. Pleurae 

 closely and distinctly punctured ; the basal third of the mesopleurse is 

 strongly and regularly obliquely striated. Legs black ; the four ante- 

 rior legs, the hinder trochanters and the base of the hinder femora, 

 rufous ; the hinder femora bear no teeth, but have two curves in the 

 middle; the part separating them being rounded and the basal curve is 

 the larger ; the apex of the hinder tibise is roundly depressed or incised 

 on the outside. Wings hyaline ; there is a dark cloud at the stigmal 

 region and a larger, lighter coloured one beyond it, the space separat- 

 ing the two being milky-white. The sides of the abdomen, on the 

 lower part, are more or less rufous. 



Is referable apparently to Kirby's " genus " Antrocephalusj which 

 was founded on two Bombay species described by Walker {H, fuscicor- 

 nis and H. diver sicornis). 



TENTHREDINID^. 

 Fethalia, gen, nov. 



Wings with 2 radial and 4 cubital cellules ; lanceolate cellule 

 divided by a short perpendicular nervure. Antennse short, thickened to- 

 wards the apex ; the third joint distinctly longer than the fourth. Head 

 largely developed behind and bulging out roundly beyond them ; the 

 occiput sharply margined on the top. Clypous widely and roundly 



