242 - Mr. Cameron on 



3. NYSSON RUGOSUS (PI. IX., Fig. 13 head, I3 a antenna) 

 Niger, linea pronoti, linea abdominis segmentibus 1 — 2, 

 maculaque scutelli,flavis, abdominis basi femoribiisque posticis 

 rufis ; alis fuscis. Long. 5 — J mm. 



Antennae stout, covered with a white microscopic pile ; 

 the third joint not much longer than the fourth ; the last 

 conical at apex, longer than the preceding. Head strongly 

 punctured ; densely covered with silvery, inclining to golden 

 on the vertex, pubescence. Cheeks margined ; an' elongated 

 wedge-shaped projection on the front, immediately above 

 the antennae ; eyes slightly sinuated above ; apex of clypeus 

 bi-dentate in the middle. Mandibules yellow at base, rufous 

 at the apex. Thorax rugosely punctured, covered with a 

 whitish pubescence ; pronotum slightly raised in the 

 middle above, the centre shining, impunctate, glabrous ; 

 the sides, looked at from above, curved. Scutellum 

 much more strongly rugose than the mesonotum ; meta- 

 notum not very clearly defined from it, rounded and 

 narrowed behind ; median segment aciculate, shining, 

 bearing four keels ; the lateral angles acute, the spine 

 stout, longer than broad. Mesopleurae convex, densely 

 pilose, strongly punctured, clearly projecting beyond the 

 metapleurae. Abdomen sparsely covered with shallow 

 distinctly separated punctures, the apical two segments 

 more strongly than the others ; pygidial area longitudinally 

 rugosely punctured. Ventral segments punctured like the 

 dorsal ; the basal margined laterally ; broadly projecting in 

 the middle ; the centre of the projection stoutly bicarinate, 

 and its sides are also keeled. Hypopygium aciculate at 

 base and in the centre ; the rest punctured, the apex bluntly 

 bi-denticulate. The basal abdominal segment is entirely 

 red, except a yellow line at the apex ; the apex of the 

 second segment is yellow ; the third at the base is more or 

 less red ; the basal two ventral segments are red. Legs 

 (especially the tibiae and tarsi) densely covered with whitish 



