340 Annals Entomological Society of America [Vol. V, 
INDEX TO LETTERING OF PLATES. 
a anal cell. md mandible. 
a, anal nervure. mn mesonotum. 
ab abdomen. mp metapluron. 
ap apical cell. ms median segment. 
b bulb. mt metatergum. 
bn basal nervure. n neck. 
c costal nervure. oO ocellus. 
C1 costal cell. p _ parapsidal groove. 
ce coxal cavities. pe anterior coxa. 
cl clypeus. ped pedicle. 
cu cubital nervure. pe prothoracic episternum. 
cu; first cubital or submarginal cell. pn pronotum. 
cug second cubital or submarginal cell. pt antennal pit. 
cu; third cubital or submarginal cell. re; recurrent nervure. 
cu, fourth cubital or submarginal cell.  s spiracle of median segment. 
d discoidal nervure. sc subcostal nervure. 
d, first discoidal cell. scp scape. 
dz second discoidal cell. sect scutellum. 
d; third discoidal cell. sd subdiscoidal nervure. 
e eye. sm submedian cell. 
em externo-medial nervure. Sp eespine: 
eps; mesothoracic episternum. st sting. 
f; filament. iE tegule. 
ff frenal fold. te first transverse cubital nervure. 
fh  frenal hooks. tc; second transverse cubital nervure. 
m radial or marginal cell. tc. third transverse cubital nervure. 
m,; radial or marginal nervure. tm transverse medial nervure. 
mec median cell. we wing cleft. 
EXPLANATION OF PUATES XXII-XXIII. 
The figures were drawn with the Camera Lucida. 
PLATE XXII. 
Fig. 1. Dorsal view of the last segments of a female Scolia guttata. 
Fig. 2. Ventral view of the last segments of a female Scolia guttata. 
Fig. 3. Dorsal view of the last segments of a male Scolia dubia. 
Fig. 4. Ventral view of the last segments of a male Scolia dubia. 
Fig. 5. Antenna of a female Scolia dubia. 
Fig. 6. Antenna of a male Scolia dubia. 
Fig. 7. Front view of the head of a male Scolia dubia. 
8. 
Front view of the head of a female Scolia dubia. 
PLATE XXIII. 
Fig. 9. Anterior wing of Triscolia fervida. 
Fig. 10. Anterior wing of Scolia dubia. 
The missing guide line from re; in this figure should lead to the 
nervure joining d and cu. 
Fig. 11. Posterior wing of Scolia dubia. 
Side view of the thorax of Scolia dubia. 
