On lndo-Chines' Ilymenoptera. 385 



often in company with Gnatholalris hirsuta, Ohaus, to which, 

 in its general asoect and coloration, it bears a marked 

 resemblance. It is remarkable, to an even greater degree 

 than that species, for the extreme variability of its elytral 

 coloration. Typically yellow, with a longitudinal black 

 stripe on each elytron, dilating near the middle, the stripe 

 is sometimes scarcely traceable, sometimes red instead of 

 black, and sometimes interrupted in the middle. Occasion- 

 ally the elytra are entirely black, whilst in pale and dark 

 forms the legs may be either yellow or black. The pro- 

 notum and pygidium, as well as the lower surface, with the 

 exception of a bare median line, are densely clothed with 

 pale yellow hair, sometimes more or less rubbed away from 

 pronotnm and pygidium. The clypeus is more elongate 

 than in the other species of the genus, the punctures of the 

 pronotum do not coalesce transversely as iti N. ludificans, 

 the hind angles are rounded off, and the mesosternal process 

 is strongly developed but not long. 



XL1T. — On Indo-Chinese Hymenoptera collected by R. Vi 'talis 

 de Salvaza. — ill. By Rowland E. Turner, F.Z.S., 

 F.E.S. 



Superfamily ICHNEUMONOIDEA. 



Family Evaniidae. 



Pristaulacus (Tetraulacinus) tonkinensis, sp. n. 



§ . Nigra; antennis, articulis duobus apicalibus infnscatis, pedi- 

 busque flavo-testaceis ; coxis posticis intermediisque nigris ; 

 abdomine nigro, segmento primo apice late, secundoque diraidio 

 basali rufo-feirugineis ; alia flavo-l^alinis, stigmate venisque 

 fuscis ; macula quadrata sub stigmate fusca. 



Long. 15 mm.; terebraj long. 23 mm. 



? . Head shining, very finely punctured ; posterior ocelli 

 about equidistant from the eyes and from each other, and 

 more than twice as far from the hind margin of the head 

 as from each other. Antennae scarcely longer than the 

 abdomen, the first joint of the flagtllum scarcely half as 

 long again as broad, the second twice as long as the first, 

 the third distinctly longer than the first and second com- 

 bined. Neck short, only a little more than half as long as 



