282 Annals Entomological Society of America  [Vol. VII, 
sometimes confused with the general sculpturing; labrum 
variable, usually five-sided, pointed at the distal end; maxillae 
with the length twice the breadth, each half quadrilateral; 
prothorax slightly wrinkled, with a row of spines around entire 
margin except in the region of the spiracles; mesothorax with 
fine indeterminate transverse striations and very small spines, 
a spinose area extending from the meson to the alar area, a 
few small spines at the base of the wings; wings with the 
venation outlined with short spines; abdominal segments 
1 to 8 with an interrupted row of very small spines along the 
cephalic margin dorsally, and with many large semicircular 
to ovate punctures caudad of the spines, distributed over 
the cephalic third of the segment and the spiracular 
region, the remainder of the segment sparsely covered with 
smaller circular punctures; caudal margins of all abdominal 
segments with a row of small curved spines directed caudad, 
the spines larger than those on the cephalic rows, the largest 
on segments 8 to 10; lateral cephalic margins of abdominal 
segments 5 to 7 cephalad of the spiracles with three prominent 
transverse ridges with distinct furrows between; cremaster 
from 5 to 7 millimeters in length, a smooth dorsal concavity 
at the cephalic end, then strongly rugose to the bifurcate tip. 
Length 134” to 2”; girth about equal to length. 
Genus Adelocephala Herrich-Schaeffer. 
Face parts very slightly raised above the level of the append- 
ages; body surface roughened with spines; eye-pieces both 
present, the glazed eye-piece always lighter in color than the 
remaining body surface; invaginations for the anterior arms of 
the tentorium small, but distinct; clypeo-labral suture present; 
labrum broader than long; maxillae, measured on the meson, 
never less than one-fourth the length of the wings, triangular in 
outline; distal two-thirds of the tarsi of the first pair of legs 
adjacent on the meson, the tips of the tarsi of the second pair 
of legs meeting obliquely on the meson; median thoracic line 
distinct on prothorax and mesothorax; metathorax with an 
oblong tubercule on each side the meson, not prominently 
elevated, but slightly rugose and polished; cremaster long, 
bifurcate at tip. 
