R. K. Nabours 



165 



leucothorax-luteolineatus {GE), the characters of the leuconotus {B) 

 and leucothorax {C) parents appear to obscure or replace the brown 

 or mottled brown parts of the characters of nigronotatus (/), luteo- 

 notatus {H), rufrolineatus {F), and luteolineatus {E), respectively, and 

 allow only their more brilliant parts (mahogany brown, yellowish red, 

 and dense black) to appear (Plate VI). It was first thought that these 

 more brilliant parts (mahogany brown, yellowish red, or dense black) 

 were separated, in the patterns of the hybrids, from the grays or mottled 

 brown parts which accompanied them in the patterns of the parent 

 species. In order to test this matter more definitely than a supei-ficial 

 examination of the patterns allows, sections have been made through 

 the pronota of several of the hybrids and their parent species and these 



Fig. 3. 



