230 Annals Entomological Society of America [Vol. VII, 
23, 1911, aged about eight months, and a number were living 
June 12, 1911, but all died soon after, some being nine months 
old or more. 
The females would usually begin laying about :ix days 
after emerging and continue for about three weeks. One 
continued for three months, by far the longest record made, 
but probably the most nearly correct as most records were 
doubtless cut unnaturally short on account of the great diffi- ~ 
culty of keeping the beetles healthy in captivity. The hiber- 
nating females of all the three forms began to lay in six days 
after having been brought in from hibernating quarters and 
given food. 
There seemed to be at least four, and possibly five genera- 
tions during the season that the experiments were carried on, 
though 38rd generation and possibly 2nd generation individu- 
als hibernated successfully. There was no evidence of any 
females which had laid eggs before winter hibernating and 
laying again in the spring, though it may possibly take 
place. The hibernating quarters used for these beetles were 
excellent and apparently gave the beetles every chance. 
The earliest eggs were obtained April 10, 1911, and the first 
‘f the first generation reared emerged May 8, 1911. The 
latest eggs in the fall were obtained September 16, 1910, but if 
there had been no prematurely cold weather, the beetles might 
have kept on laying for several weeks longer. From two or 
three tests made, a female seemed not to be able to lay fertile 
eggs longer than three or four weeks after being separated from 
a male. If anew male was introduced, however, it seemed to 
affect the eggs almost immediately and after two or three-days 
none of the progeny showed any of the characters of the former 
male, even when little or no interim existed between the males. 
No feeding or counts were taken on this species as all the 
time in the work with these beetles was used in heredity in- 
vestigation * and only such life history data as took but little 
time were noted. On general observation it was evident 
that they eat much less than the foregoing larger species, and 
in the breeding cage, at least, will not eat as large lice as the 
above ladybeetles. Probably out of doors, when the lice are 
quiet instead of restless as in the cages, they may feed upon 
*See ‘‘Some Notes on Heredity in the Coccinellid Genus, Adalia Muls.’’ 
Annals of Ent. Soc. of Am., Vol IV, No. 3. 
