NEMATUS LONGISEKRA. 95 



Dark fulvous, covered with faint white down, the mouth white, the 

 antennae, three broad marks on the mesonotum, the sternum, and the 

 dorsum of abdomen (except the extreme apex), black. The an'tenna3 are 

 shorter than the abdomen, the apical joints thin, the third and fourth 

 equal in length ; the clypeus is not notched. Mesonotum shining, 

 strongly punctured. Sheath large, long, broad, black, largely pro- 

 jecting ; the cerci long, fuscous, pubescent at the apex, and as long as 

 the half of the abdomen. Abdomen more than a fourth longer than 

 the head and thorax, the apical segments project in the middle into a 

 thin half-circular plate. Legs pale obscure yellow, with the posterior 

 tarsi fuscous. The posterior tarsi are shorter than the tibiaB, and the 

 femora than the tibiae ; second tarsal joint is a little shorter than the 

 fifth. The femora have a short black line at the base. Wings hyaline, 

 the costa and stigma pale white, the latter being a little darker at the 

 apex. 



The $ is black with the exception of the mouth, orbits, pronotum, 

 tegulae, belly and legs, which are dark fulvous; the antennae are 

 nearly as long as the thorax and abdomen, and the anterior legs 

 broadly lined with black at the base. The abdomen is keeled in the 

 middle throughout, the keel produced at the apex, and with a large and 

 deep fovea on either side of it. 



Length scarcely 3 lines. 



A smaller species than N. Mstrio. The ground 

 colour is lighter than in that species, and the clypeus 

 can scarcely be said to be notched. 



I am not quite satisfied as to the above-described 

 species being N. longiserra of Thomson, for its ovi- 

 positor does not seem to be quite so long, not being 

 quite " dimidio abdomine haud breviore." In color- 

 ation my specimens belong to Thomson's var. c. Apart 

 from the difference in the form of the saw it does not 

 differ much from N. hcemorrhoidalis ; the clypeus is 

 not so deeply notched, however, and the c? has the 

 antenna longer, thinner, and not so pilose ; it is 

 narrower, the anterior femora only are lined with black, 

 the abdomen is keeled and the stigma is darker. It is 

 a smaller species than histrio ; the ground colour is 

 lighter, the clypeus almost transverse, the costa and 

 stigma in the ? are lighter coloured and the legs are 

 only black at the base. 



Bred from among larvas of N. glenelgensis (of. p. 94). 



