1914] Pupe of Ceratocampide and Hemileucide 279 
never visible in ventral view; metathorax with distinct tuber- 
cules more or less oblong in outline on each side the meson and 
extending more than one-third the distance from the meson 
to the margin of the wing; the suture between the seventh 
and eighth segments never deep with distinct crenulations on 
its margins; cremaster always present, usually long and bifurcate 
at tip. Five genera of this family have been described. One 
genus, Syssphinx, consisting of three species, was not available 
for study. The remaining genera of Ceratocampide can be 
separated by the following table: 
A. Surface of pupa never spinose; cremaster broader than long, broadly 
and shallowly bifurcate, never over 2 mm. in length.......... Citheronia 
AA. Surface of pupa spinose; cremaster at least twice as long as broad, 
bifurcate at tip, always more than 2 mm. in length. 
B. Thorax rugose with short isolated spines, abdominal segments 
not spinose, but bearing a row of spines along both cephalic 
and caudal margins of segments 1 to 7, the spines along the 
caudal margins of segments 5 to 7 much longer than the spines 
CUM MCEP ACH ROW Sera ta sate rai tte ee ees teree tee Basilona 
BB. Thorax and abdominal segments densely spinose; abdominal seg- 
ments 1 to 7 with a row of spines along both cephalic and caudal 
margins, the spines in the cephalic rows on abdominal segments 
5 to 7 usually much longer than the spines in the caudal rows; 
maxilla, measured on meson, one-fourth the length of the 
wings. 
C. Usually with prominent scattered spines on the thoracic 
segments, at least four times as long as those covering 
the segments; antennae with the central axis bearing 
a row of prominent spines curved caudad; if without 
prominent spines on the thoracic segments and antennae, 
then the maxillae, measured on meson, one-third the 
length of the wings. 
D. Eighth abdominal segment never with a prominent 
transverse ridge in the middle of the segment 
bearing a row of spines; glazed eye-piece always 
lighter in color than the remaining surface of the 
body; species always more than an inch in length. 
Adelocephala 
DD. Fighth abdominal segment always with a prominent 
transverse ridge in the middle of the segment bear- 
ing a row of spines; glazed eye-piece always the 
same color as the remaining surface of the body; 
species never more than an inch in length. .Dryocampa 
CC. Without prominent scattered spines on the thoracic seg- 
ments, the longest never four times the length of those 
covering the segments; antennae with the central axis 
never bearing prominent spines, the spines never curving 
caudad; maxillae, measured on meson, always one-fourth 
Cements OleiiemWilOS. soins cts Saaace rae oes oe Anisota 
