220 Timehri. 
Charterginus rufo-ornatus, sp.n. 
Black, densely covered with a silvery pile, the face, clypeus, mandibles and 
the greater part of the antennal scape rufo-piceous, a broad line of variable 
form on the apex of the clypeus, a longish triangular mark at the eyes opposite 
the antenna, a line on the apex of the pronotum, above the basal slope and 
reaching to the end of the upper third of the pleure, a narrower line branching 
off from it, running along the top to the tegule, the base of scutellum, to near 
the middle, the mark roundly incised at the apex, the scutellar keels, a line 
of equal width on the base of post-scutellum, reaching near to the base of the 
narrowed apex, a broad curved line, narrowed towards the apex, on either side 
of the apical two-thirds of the metanotum, a line on the apex of the 1st abdomi- 
nal segment, a broader one on the 2nd, broadly dilated in the middle and a 
much shorter projection, half way between that and the sides, a narrower one 
on the 3rd, a sill narrower one on the 4th, a spot, rounded and slightly nar- 
rowed at the base, the apex with a shallow incision, on the base of the 2nd, 
close to the outer edge and the apices of the 2nd to 5th ventral yellow. Legs 
black, the fore tibize and tarsi rufo-piceous. Wings hyaline, the stigma and 
nervures black the apical nervures paler. The apical antennal joints are 
reddish brown except above ; the apical may be entirely rufous. Female. 
Length 5-7 mm. 
The pubescence on the face and clypeus appears to be golden in certain 
lights, the front and vertex bear scattered, distinct punctures, the thorax, 
above and laterally, is more strongly and closely punctured, except on the apex 
of the post-scutellum and the metanotum which are impunctate, more shin- 
ing and bare. The scutellum and post-scutellum have a straight oblique 
slope in one line ; the latter is prolonged into a tongue, rounded broadly at 
the apex, below. Basal abdominal segment small, more as in Nectarina 
than in Chartergus proper. The eyesin the examples examined are bare, 
not pilose as in typical Chartergus. 
Polistes, Latr. 
lf not in species this genus is probably the most numerous in individuals 
of the South American social wasps. All the species are very variable, 
some of them extremely so in colouration. 
Polistes carnifex, F. 
Polistes canadensis, L. 
The example has the body entirely ferruginous as in Saussue’s var. B., but 
the legs are paler, yellowish on the tibie and tarsi, except a black band on the 
apex of the hind tibiw. It is certainly very much lighter coloured than the 
Brazilian specimens I have seen of this species, there is no black on the body; 
it is 21 mm. long. 
Polistes rubiginosus, Lep. 
I have a specimen of the above species taken at Demerara by the Rev. Mr. 
Harper. 
ee 
