INSTITUTE, PUSA, FOR 1919-20 99 



" One egg-mass of T. crassus, obtained on 23rd Novem- 

 ber, began to hatch out parasites on 20th December; this 

 egg-mass was kept undisturbed outside the Laboratory in 

 a tank full of water and mud, and the parasites were 

 noticed to survive until 6th January 1920. 



" Fresh egg-masses of T. bicallosus and Chrysofs sp. 

 were found on 26th December, but no parasites emerged 

 from these eggs. 



" One old egg-mass of C. stimulans was examined care- 

 fully and was found to contain several parasites of a 

 smaller variety. 



" Two very old egg-masses of T. albimedius, covered up 

 with a kind of fungus, were obtained on 4th January. One 

 of these was opened up on that date and was found to con- 

 tain living parasites. 



" One egg-mass of T. sanguineus was noticed to hatch 

 out parasites on 4th January. 



" One egg-mass of T. albimedius began to hatch out 

 larvae on 7th January. The parasites from the same mass 

 emerged on 8th January. 



" The total number of parasites which emerged from 

 a single egg-mass of T. albimedius was 253 and the number 

 of larvae which emerged from the same mass was 57. 



" One old egg-mass of C. stimulans was found to contain 

 parasites (small variety) on 9th January. 



" One egg-mass of T. sanguineus obtained on 31st 

 December began to hatch out larvae on 7th January 1920; 

 parasites emerged from this mass on 9th January. 



" Several parasites were seen emerging from the egg- 

 masses of T. albimedius and T. crassus which were collected 

 during the second week of December ; on breaking open the 

 egg-masses, the parasites were found alive on 15th January. 



" One egg-mass of T. crassus, collected on 11th Janu- 

 ary, was seen hatching out parasites on 18th January. 



"One egg-mass of T. albimedius type, which was 

 covered up with fungus, began to hatch out parasites on 



29th January. 



h2 



