A STUDY OF COMPSILURA CONCINNATA. 91 
last of August and first of September constitute the third generation 
and furnish the adults which attack the hosts in which the Comp- 
silura larvee later hibernate. 
~ N 
Bees y se ‘ \ y S 
RSV SS © pea ej 8 S 
yw NEN RN RL BW yw XY X 
SEATS E See ee LHe Ee ye LE EELS 
SRRLES EE LAE SE CoE CEL LE Ee ea 
PRU 
42 || SF | | LE | 77 49 | 20) EY |) 22) 23)\2F 25|26|27\|2s|29lso0\s,|7\l2\sle2z\|_ | 
JJ SURES REZ cee ee eee ae 
a |e a 0 ie 
BS i 
SAE ECUNEE CE ERE 
aS 1 / —s 
at tee A GELLAR 
a 
= ALONE a er Lil a cic ES 
Alt oe eee 
eer ia| | a VA 
ee Ee 
_- DSR REBERE Ss? al eee 
Bo Va AP ere 
XL ze h | A (Am: 
EEE RH EEE EE 
A recemaenl AN eee, \ctan 
8 7 Wi ¥ Yip 
. JSPs BREE eek ah ARae 
rid ae eels... |: | SE RN ea 
mieten | RN | 
J Se eee P Se ei Rae 
is Hf Lo ee ae SEE 
6S \ 
eee | tte a Nc ae 
a pe eae. | ee ee Ne 
ee le deh le lls LS be | 
Fic. 10.—Diagram illustrating relation of temperature to activity of adult Compsilura concin- 
nata, July and August, 1916. (Original.) 
HIBERNATION. 
Hibernation of Compsilura is the point in the life history of 
the parasite which has not been completely worked out, although 
enough has been accomplished in this line to warrant its discussion 
here. Several cases of hibernation of Compsilura have been re- 
corded, but only six hosts have given absolute records. These are 
