54 Annals Entomological Society of America [Vol. XI, 



Egg Laying Habits. The three captured females of which 

 records were kept laid respectively 147, 184 and 303 eggs in 

 confinement. A number of the reared moths of both sexes were 

 confined together but eggs, 92 in number, were obtained from 

 but one female and they were infertile. 



Rearing Methods. Larvae were found to be comparatively 

 easy to rear. Four series were reared from the egg and adults 

 were obtained in three of them. The larvas were confined in 

 half-ounce tin salve boxes floored with damp blotter to keep 

 the food fresh and absorb excess moisture. They were exam- 

 ined daily, fed, and the boxes cleaned as often as necessary. 

 They were fed only on bluegrass cut in short lengths. Larvae 

 in each instar were described and preserved. In one series a 

 record was kept of the amount of food consumed. The data 

 given in the rest of this paper are derived from these rearings 

 and while perhaps varying somewhat from actual field condi- 

 tions give at least a basis for comparison with other species 

 reared by similar methods. 



Stage and Instar Records. The duration of the egg 

 stage is variable, being directly dependent on temperature. 

 The length of the first instar is also variable for some larvae 

 began at once to feed while others remained inactive for two 

 or three days. Up to the seventh instar the rate of growth is 

 very consistent. Here a complication arises for the instar 

 immediately preceding the change to the pupa is always the 

 longest whether it be VII, VIII or IX. Three larvae which 

 pupated from VII passed 13 days each in that instar while 

 15 larvae which molted to VIII averaged but 4 days in VII. 

 This explains the sudden increase in the maximum length of 

 the seventh and succeeding instars in Table I in which are 

 condensed the data' secured as to length of instars and stages. 



