1963 ] Evans — Wasps n 
stigma brown. Head slightly wider than high. Clypeus with no 
evidence of a median lobe, but each side with a pair of rounded lobes 
which extend over the dorsal mandibular condyles (Fig. 5). Front 
shining, with a linear median impression which does not quite reach 
the anterior ocellus; punctures of front small, virtually absent above 
the ocellar triangle. Minimum distance between eyes 1.1 X height 
of an eye; inner orbits closest at the middle, weakly diverging above 
and below. Posterior ocelli situated well below an imaginary line 
drawn between eye tops; width of ocellar triangle 1.1 X ocello-ocular 
line; distance from posterior ocelli to top of vertex more than 1.5 X 
width of ocellar triangle. Basal enclosure of propodeum very short 
except medially, where it is roundly produced backward (Fig. 6) ; 
basal enclosure and propodeal disc barely impressed medially. Front 
femora about twice as long as wide; hind femora much flattened, 
measuring about 2.2 X as long as wide. Fore wing as figured by 
Kieffer, 1914, Fig. 195; marginal, submarginal, and first discoidal 
cell somewhat shorter than in Scolebythus madecassus, and the tip of 
the marginal cell turned away from the wing margin. 
Remarks. — This description is drawn from the paratype, which is 
virtually identical to the type but in somewhat better condition. I 
have recently seen nine additional females of this species: eight from 
the Rio Caraguata, Matto Grosso, Brazil, collected by Fritz Plaumann 
in March, 1953 ; and one from Nova Teutonia, Santa Catarina, Brazil, 
taken by the same collector in December 1962 (collections of the Univ. 
of Kansas and Mus. Comp. Zool.) . These specimens vary in size from 
7 to 10 mm. (not counting the sting, which extends up to 3 mm. 
beyond the abdomen), the fore wing from 4 to 6 mm. In this series 
the body color varies from deep fusco-castaneous to piceous; it is 
nearly uniformly colored except that the abdomen tends to be slightly 
paler basally and apically and the less deeply colored specimens show 
evidence of markings on the vertex similar to those described above; 
the mandibles and legs are bright testaceous throughout the series. 
In these darker specimens the golden-brown body setae stand out 
strongly, particularly the long, rather dense setae on the apical tergite. 
Despite the darker color, I cannot believe that these specimens repre- 
sent a different species, as structurally they are nearly identical to the 
types of longiventris (which were collected long ago and may have 
faded). One notes that in all nine specimens the basal enclosure of 
the propodeum tends to be subangulate behind rather than rounded 
as figured ; and in three specimens the ocellar triangle is more com- 
pact than usual, the ocello-ocular line being subequal to or slightly 
greater than the width of the ocellar triangle. 
