4/8 LÉPIDOPTÉROLOGIE COMPARÉE 



To sum up : 



Lycia hirtaria cf j 



„ ., . , „ r S'î'e représentée! as cfcf with 



Pœcilo-psîs Lapponana (j > 



. \ male-ness récessive. 



/^. pomonana (j ] 



Lycia hirtaria Q \ 



P. lapponaria Q ^ are cTq 



P. pomonaria Q ) 



I. zonaria cf 



/. grœcaria cf 



/ alpina cf ( ^''^ *** f Femaleness dominant. 



/. italica cf 



/. zonaria Q 

 /. grœcaria Q 

 /. alpina Q 

 I. italica Q 



are cfcf 



This is the only possible simple Mendelian scheme which 

 explains ail the facts, but as was said it is defective. It fema- 

 leness is dominant, zygotes of the constitution cf Q should be 

 female in appearance and the zygotes cf o' should be maie, which 

 is opposite to what is assumed above. 



Prof. R. C. Punnett however has suggested that, if we assume 

 a ségrégation of the germ plasm from the somatoplasm in the 

 Ithysia, a scheme producing a female body with germs of the 

 constitution cfcf can be built up and so on with the other defect. 



Granting that the above scheme is possible *, let us consider the 

 effect of Crossing zonaria maie with hirtaria female; we should 



* It is extremely improbable that it can exist in the above crude form but it 

 is hoped that the lesults of the cytological examination mentioned above will 

 show that, by sélective fertilisation or otherwise, phenomena, comparable with 

 those yielded by this scheme, are just what we ought to expect. 



