304 ENTOMOLOGICAL XEWS [xxxii, '21 



obtained without moisture and regulated temperature other than 

 that present in the laboratory and eggs were unprotected from 

 direct light. 



Cage Number Number eggs in cage Number hatched 



Jan. 181 6 6 



" 22 3 A 131 90 



" 23 3 B 100 55 



" 24 3C 60 26 



" 25 3D 100 54 



". 26 3E 100 69 



" 29 3F 100 11 



" 29 3G 100 67 



" 30 3H 100 52 



" 30 31 100 20 



The following table shows rate of hatch when blotting paper 

 and moisture were used ; temperature kept at 70 degrees F., and 

 eggs protected from direct light. 



Cage Number Number eggs in cage Number hatched 



Feb. 2 5A 65 37 



2 3L 100 79 



6 3M 100 89 



7 3N 100 85 



7 3O 100 65 



9 3P 100 92 



9 3R 100 80 



146 25 16 



" 17 <5A 200 171 



" 22 6B 200 175 



" 23 6C 100 72 



The removing of the larvae from egg cages to larval cages 

 was done by means of a moistened camel's hair brush, and a 

 slight tap on the edge of the cage would set larvae free. 



CAGES FOR LARVAE. 



Petri dishes fitted with circular pieces of blotting paper, 

 extending j/,s to y of an inch up the sides, proved to be very 

 satisfactory. If blotting paper did not extend up the side of 

 the cage, the larvae would work their way under it, and if not 

 removed every day thev would die. 



Sand and sawdust were placed in the cage so that they 

 reached half way up the side, and then the cage was removed 



