1977] 
Porter — Mesostenines 
51 
white band increasingly narrower mesad and broadly interrupted 
medially on sixth and following; fore leg pale testaceous with coxa 
white, except for a brownish streak dorso-basally, and tarsomeres 
2-5 mostly dusky; mid leg similar to fore leg except for weak testa- 
ceous staining on coxa; hind leg pale testaceous with coxa grading 
into white near base and with a broad, percurrent, weakly con- 
trasting pale brownish stripe on its dorsum and with tarsus yellow 
except for blackish on the last segment; wings hyaline with stigma 
whitish grading marginally into pale brown. 
Length of fore wing: 1 A mm. Flagellum: scarcely flattened be- 
low toward apex; first segment 6.4 as long as deep at apex. Front: 
horn large, stout and conical, situated a little below center of front. 
Clypeus: bluntly nasute; apical margin convex. Malar space: 0.75 
as long as basal width of mandible. Occipital earina: fine and sharp, 
joining the moderately raised hypostomal earina below in a weak 
depression at a distance above base of mandible equal to about 1/2 
basal width of mandible. Temple: strongly and directly receding; 
0.21 as long as eye at upper 1/3. Pronotum: humeral margin 
strongly swollen, evenly rounded and not especially prominent at 
anterior end; epomia strong throughout in scrobe but not pro- 
longed dorsad or ventrad; anterior margin bluntly angulate below 
middle. Mesoscutum: smooth and polished with a few sparse punc- 
tures; notauli sharply impressed and reaching about 2/3 the length 
of mesoscutum; lateral lobe opposite tegula with a large, gently 
raised, nearly circular white callus which is set off internally by a 
longitudinal impression. Mesopleuron: subalarum swollen; pre- 
pectal earina reaches dorsad about to upper 0.5 of hind margin of 
pronotum; prepectus opposite lower hind corner of pronotum with 
a rather high ridge that extends about 1/3 the distance ventrad to 
prepectal earina; surface shining with strong longitudinal wrinkling 
that becomes weaker and partially interrupted on upper 1/2, where 
there are some scattered large punctures, as well as ventro-posteri- 
orly, where there are more numerous large punctures. Lower meta- 
pleuron: with strong oblique wrinkling that grades anterio-dorsad 
into puncto-reticulation and finally becoming smooth for a short 
distance near front margin. Wing venation: areolet 1.6 as wide as 
high at apex; second recurrent a little basad of second intercubitus; 
nervulus slightly antefurcal; postnervulus broken at lower 0.4. Fore 
tibia: moderately inflated. F[ind femur: 1.6 as deep at middle as at 
apex. Flind tibia: inner spur 0.41 as long as basitarsus. Propo- 
