476 NEW YORK STATE MUSEUM 
wanders far from water. Corydalis is usually crepuscular, and 
is often attracted to lights at night. One large female was seem 
to make a flight of several rods, when apparently unmolested, 
on a bright, hot June day at 2 o’clock p. m. 
The adults are very short-lived, at least when kept in cages,. 
and probably also when at large, judging from the short length 
of the season when adults are to be found. Of the specimens 
kept in cages, the males never lived longer than three days after 
emerging, while the females lived as long as eight or 10 days. 
None could be induced to take food, and it is probable that the 
adults take no food. The studies made by Mr W. A. Riley and 
others indicate that very little histolysis takes place in the 
digestive organs. This is explained by the probable fact that 
these organs are not used in the adult insect. | 
The dates on which adult specimens have been taken at Ithaca 
range from June 4 to July 8, in a long series of years. 
TABLE TO SPECIES OF CORYDALIS 
a Hastate or lanceolate pale mark on middle of 
hind part of prothorax, irregular light marks 
each side 
b Costal cells of front wings mostly with two 
white spots in each 
ce Male appendages, upper pair, with the ends 
abruptly turned under and back, appearing 
aS & ‘SCPALAte, SCSMEMTS vis .ie... syale snes else wens linamabilis 
cc Male appendages, with upper pair not abruptly 
TAPE: ae cyan soos Gs tansoe sovaal snr 8) owe cnet, 2cornuté 
bb Costal cells of front wings with only one white 
SHOU IM: GAGE vx nehkisgn Ganee note eit Pate i eee aie 3 CO Data 
aa Hastate and other marks on prothorax of same 
color as the rest or nearly so 
b Antennae with two basal joints and most of the 
others light yellow, outer three fourths with 
minute sharp teeth 
¢ Front wings with no dusky clouds in cells, 
except near the stigmatal region; white dots 
RIMOSt WATULNE o ivna oss oe Res Bet ie eres 4ecrassicornis 
ce Front wings with dusky and white clouds; 
white dots numerous except in costal region. . 5 peruviana 
bb Antennae with basal joints never yellow; seg- 
ments of antennae never toothed 
c¢ Costal cells often with two white dots in each 
d Front wings hardly clouded except in region 
of: stigma... Aceon: ee eee 6lutea 
