1964 ] 
Porter — M elanichneumon 
3 
below subalarum with a few punctures and rather weak wrinkling. 
Legs: hind-coxa without a clearly defined scopa, finely and densely 
punctate beneath. Propodeum : areolation sharp and complete ; area 
superomedia distinctly a little longer than wide, considerably nar- 
rowed anteriorly, its surface highly polished, with only vague 
wrinkling; the rather large, strong punctures of area superoexterna 
(sparser) and area dentipara mostly well separated by polished inter- 
spaces. G aster : median field of postpetiole discrete, with weak longi- 
tudinal striation and a few scattered, large punctures; gastrocoeli 
distinct but rather small and shallow, thyridium defined; second and 
third tergites strongly and densely punctured, the rest much more 
sparsely and weakly so ; narrow anterior band on second tergite 
between gastrocoeli with distinct longitudinal striation in addition 
to punctures. Length: zb 8.5 mm. 
male: Color: black, the following white: maxillary palpi; man- 
dibles except toward tips; clypeus; face; frontal orbits about to level 
of anterior ocellus; hind orbits on a little more than lower half of 
eye, broadly interrupted in malar space ; most of scape beneath ; collate 
in great part; pronotal ridge, broadly interrupted in front; scutellum 
except for a basal triangular area occupying about one-fourth its sur- 
face ; subalarum except toward apex ; outer face of fore femur toward 
apex and outer face of fore tibia dully; dullish area on outer face of 
mid-femur apically; most of gastral tergites six and seven conspicu- 
ously. Wings hyaline. Flagellum : 32 segments, bacilliform tyloides 
on segments 5 to 13. Head: malar space slightly less than half basal 
width of mandible. Thorax: generally as in female, punctation 
slightly finer and sparser, the surface a little more shining ; scutellum 
with lateral carina distinct basally for about one-third its length. 
Propodeum : area superomedia no longer than wide, horse-shoe 
shaped, its surface highly polished with obscure wrinkling; areae 
superoexternae and dentiparae polished with rather large but weak 
punctures and obscure wrinkling. Gaster: gastrocoeli rather broad 
and short, distinctly wider than long, considerably stronger and 
deeper than in female; central portion of second tergite between and 
to some distance behind gastrocoeli longitudinally striate ; second and 
third tergites rather strongly punctured, fourth and following less 
strongly so. Length: zb 9.5 mm. 
variation: the flagellum may have 33 or 34 segments; the lateral 
carinae of the scrutellum, in specimens before me, vary from being 
defined only at base to extending about half the length of the 
sclerite; area superomedia sometimes distinctly wider than long, its 
surface often more strongly wrinkled than described above — by no 
