290 



Annals Entomological Society of America [Vol. IV, 



From the cross between an annectans female (reared from 

 melanopleura parents) and a humeralis male 57 beetles matured 

 all annectans. This showed the female to be pure strain 

 tlj^ough descended from melanopleura parents. 



The foregoing results are given below in tabulated form: 



>2d gen. 



Crosses 



1 Male — annectans 1, . 

 Female — humeralis t ^ 



2 Male — humeralis \ 1st gen. 



Female — annectans /2nd gen 



3 Male— humeralis j, . 



Female — melanopleura *( s 



4 Male — humeralis \ , . 



Female — melanopleura*! " 



5 Male — melanopleura* 



and later annectans list gen. < 



Female — annec tans-humeral is 

 hybrid 



Humeralis Hybrid 



Female — annectans-humeralis . \ a ■ 

 Male — annectans-humeralis.. . .j " ° '' 



Female — mclanopleura-humeralis 1 



Male — melano pleura-humeralis (probably). 

 Also melanopleura-annectans (prob.) .J 

 Female — melanopleura-humeralis \ „ 

 Male-humeralis joffspnng. 



Melanopleura-annectans Hybrids 



Cage of males and females — offspring 



Female captured, male annectans.' 



— offspring 

 Two females and one male 



mated with recessive. . . . [offspring. 

 (See crosses 3, 4 and 5) 



Annectans 



Cage of males and females — offspring 



One female, captured, male unknown, 



offspring 



One female with humeralis male (See 



cross 2) — offspring 



Humeralis 



One female with 3 males — offspring 



(Female used later in cross 1) 



Total 



* melanopleura-annectans hybrid. 



57 



4 



54 



26 



17 

 58 



47 



17 

 13 

 14 



30 

 13 



19 

 6 



30 



407 



