343 



For the breeding of individual eggmasses each of these was 

 put into a piece of glass tube of [ / 3 inch diameter and 2y 2 inch 

 lengtb, the two open ends filled up witb cotton wopl (fig. 3). One 





eggmass 



Fig. 3. 

 end was now and then dipped into water in purpose of giving mois- 

 ture to prevent the eggmass from drying. Of course at the beginning 



the eggmass must be cut off to the size as to fit in the glass tubes. 

 As soon as the parasites emerged from the eggs, previously 

 I counted the number of males by using a magnifier (20 times). 

 They are very easily distin guishable by the antenna'e; the antenna 

 of females is clavate and black coloured, that of males is slender 

 and threadlike, and brownish yellow coloured (Van Deventer. Hand- 

 boek 2d. ed. page 120). After my experience it was dii'ficult to count 

 the living stage of parasites, hut we can count the number of the 

 holes on the surface of the eggmass; this finished, I took out the 

 cotton wool from one end. then one by one the parasites were fixed 

 on the top of a needie which first was dept into alcohol and then 

 put witb the parasite into a watch glass witb alcohol. When they 

 were all taken out from the tube. the sexes were once more distin- 

 guished and noted. 



