1948] 
Bequaert — Genus Pachodynerus 
107 
Edge of first abdominal tergite bluntly angular and 
often slightly swollen at the junction of basal slope 
and apical horizontal area 5. 
5. Interocellar area flat or scarcely depressed. Clypeus 
of female coarsely punctate ; of male slightly longer 
than wide, with medium-sized punctures, without 
median longitudinal humps. Inner margin of man- 
dible of male with the basal tooth low and broad. 
Black; head, thorax and legs profusely marked 
with yellow; tergites 1 and 2 and sternite 2 with 
apical yellow bands (also two discal spots on tergite 
2 in var. barbouri) P. tibialis. 
Interocellar area distinctly grooved. Clypeus of fe- 
male with medium-sized punctures ; of male about as 
long as wide, with medium-sized punctures and a 
median pair of low longitudinal humps. Inner 
margin of mandible of male with the basal tooth 
high, triangular 6. 
6. Sculpture of head and thorax very coarse ; pronotum, 
scutellum and postscutellum almost rugoso-reticu- 
late. Cheeks rather swollen in profile, at least half 
as wide as the eye at the occiput. Colored much 
like P. cubensis in typical form, but the apical ab- 
dominal segments often less extensively ferruginous 
or entirely black; in var. bahamensis, base of first 
abdominal tergite extensively ferruginous-red. 
P. scrupeus . 
Sculpture of head and thorax dense, but moderately 
coarse, not rugoso-reticulate. Cheeks barely swol- 
len in profile, less than half as wide as the eye at the 
occiput. Black ; head and thorax profusely marked 
with yellow; tergites 1 and 2 and sternite 2 with api- 
cal yellow bands (much widened at the sides of ter- 
gite 1) ; base of flagellum, femora and apical 
segments of abdomen more or less extensively fer- 
ruginous-red P. cubensis. 
1. Pachodynerus nasidens (Latreille, 1817). Odynerus 
simplicicornis de Saussure (1855), described from Cuba, 
I regard as a synonym, being unable to find any consistent 
difference between Cuban and continental American speci- 
