74 Psyche [Sept.-Dee. 
B. var. bicincta. Head rectangular (narrowed behind in 
the type) ; base of the petiole and gaster brown. 
Branch Latinoda 
1. Color bright yellow, last gastric segment brownish; petiole 
stout with a short peduncle and a round node, rising 
sharply from it. Trinidad. Length 6 mm icterica 
Color darker 2 
2. Petiole below without or with a very small antero ventral 
tooth. PI. Ill, fig. 23 3 
Petiole with a large tooth and usually with a broad lamella 
except in maligna-cholerica, which lacks the tooth. PL 
III, fig. 20 7 
3. Head oval, not longer than broad. PI. Ill, fig. 23 belti 
A. belti type. Length 5-6 mm.; petiole with a small 
tooth; thorax narrowly marginated. Costa Rica. 
B. var. obnubila. Length 6-6.8 mm.; black; more ro- 
bust than the type; peduncle longer and broader. 
Costa Rica. 
C. subsp. julvescens. Color reddish testaceous; gaster 
brown; thorax flatter than in the type. 
D. subsp. venifica. Length 4-4.5 mm.; deep brown; 
petiole and gaster sometimes lighter; very hairy. 
Mexico. 
E. subsp. bequeerti. Length 5-6 mm.; head a little longer 
with convex sides; prothorax not marginate; differs 
from the other varieties by its uniformly brown color. 
Head a little longer than broad 4 
4. Head narrowed behind; color uniformly dark brown; node 
almost as long as broad; petiole without a ventral 
tooth; very hairy car oil 
Head not narrowed behind 5 
5. Clypeus in front with two blunt teeth, as in the genus Sima ; 
length 6.5 mm.; petiole as broad behind as long; color 
brownish yellow. Amazonas simoides 
Clypeus not with blunt teeth 6 
6. Group canescens. PL III, fig. 22. 
A. canescens. Length 5. 5-6. 5 mm.; head longer than 
broad, with nearly parallel sides ; antennae surpassing 
the head. Mexico. 
B. bradleyi. Length 5.5 mm.; uniformly light brown; 
