288 Annals Entomological Society of America _[Vol. VII, 
face parts prominently elevated above the level of the append- 
ages, an elevated ridge extending cephalad from each proximo- 
lateral angle of the labrum to the proximal end of each antenna, 
bearing a large laciniate spine near its cephalic end; epicranial 
area with a stout curved spine on each side the meson near 
the proximal end of the antenna; labrum variable, usually 
hexagonal, with two small tubercules or spines and pointed at 
the distal end; prothorax with the median line generally ele- 
vated, more densely spinose on each side adjacent to the meson 
than on the remainder of the segment; mesothorax with one 
and sometimes two laciniate spines on each side the meson 
near the cephalic margin with sometimes one or two smaller 
spines, a scattering group of spines at the base of each wing 
and one spine on each side, half-way between the base of the 
wing and the meson, which is larger than those covering the 
segment; metathoracic tubercules rugose, somewhat diamond- 
shaped, each extending about half the distance from the meson 
to the margin of the first pair of wings, subadjacent on the 
meson; abdominal segments 1 to 3 with a row of minute spines 
along both cephalic and caudal margins of the segment; cephalic 
margins of abdominal segments 5 to 7 punctate and produced 
into flange-like ridges directed cephalad, bearing a row of 
prominent, erect, triangular spines, less than one-fourth the 
length of the segment; caudal margins of abdominal segments 
4 to 7 with a furrow near the caudal margin of the segment 
and a row of spines on the elevation at the junction of the seg- 
ment and the transverse conjunctiva, these spines about one-' 
third the size of the spines in the cephalic rows; abdominal 
segments 8 to 10 with fewer spines and more punctures on 
the surface; the eighth abdominal segment with a prominent 
transverse ridge in the middle of the segment, with a slight 
protuberance on each lateral margin, the transverse ridge set 
with spines similar to those along the caudal margins of seg- 
ments 4 to 7, a smaller row along the caudal margin of the seg- 
ment; ninth abdominal segment with two rows of spines near 
the caudal margin with two or three prominent ones along each 
lateral margin; tenth segment with two or three prominent 
spines along each lateral margin at the proximal end of cre- 
master; cremaster with a smoother, triangular depressed area 
dorsad at proximal end, the remainder of the surface rugose 
with wavy longitudinal ridges, the caudal end bifurcate for 
