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This young embryo, when examinée! on microtomous cuts, 

 is always found Hyng in an ovalshaped membrane (see fig. 3 C) 

 which, according to its size, must be the egg shell having taken 

 this regular oval ferm now. The embryo does not qui.e fill the 

 egg in its new shape, en the contrary it lies in a very much 

 comminuted médium (yolk) which cannet originate in the egg 

 itself, as this like that cf other parasitic Hymencptera has no 

 yolk. The yolk feund in the Anagrus-egg therefore must hâve 

 been absorbed through the membrane from the yolk cf the host 

 egg. This latter yolk, however, consists, of large, bright and 

 round glcbules and nething else, thèse yolk globules thus must 

 be resolved in crder to pass through the egg-membrane, and 

 most likely the large salivary glands of the parasite will play 

 their parts in this act of résolution. 



Little by little the embryo will grow, in fig. 4 D an embryo 

 0,255 mm in length is figured, the stomach of which has widened 

 considerably from taking up food. When we regard a living 

 embryo (or later en the free larva) lying in its food-mass it 

 will be seen that in contradistinctien to the Anagrus-larva. most 

 of the body is quite immovable, cnly the head changes its shape, 

 the mouth lips are incessantly seen to move as if reaching for 

 and swallowing more and more of the yolk surrounding the 

 embryo. 



I hâve not seen any embryo of more than 0,255 mm in length 

 lying in the egg membrane ; when about of that size it will burst 

 through the membrane and find its way into the yolk of the host 

 egg as a free larva. — Fig. 3 D and 4 E show such a newly 

 hatched larva, 0,297 mm in length. The stomach is now so 

 widened that it takes up most of the body, only posteriorly on 

 the underside there is a thicker part where the end gut and 

 the ergans of sex are now to be found. As may be seen from 

 fig. 3 D, we now find in the stomach some not-transformed yolk 

 globules which it now direc'.ly can swallcw. It must be noted 

 that I hâve not been able in this stage (and in larger ones) to 

 discever any salivary gland, they hâve been reduced, surely 

 because no more resolving cf the yolk globules is needed. 



After this the shape of the larva becomes more and more 

 undistinguishable, the larva only will swallow more and more 

 of the surrounding yolk without making any at':empt to digest 

 it at the same time. — Fig. 3 E represents a larva of 0,462 mm 

 sïze, it still displays a pretruding cral part, and mest of the 



