148 Experimental Zoology 
For example, a female of a race with black worms and white 
cocoons was mated to a male with striped worms and yellow co- 
coons. The offspring were : — 
No. oF INDIVIDUALS Worms Cocoons 
89 black and striped yellow 
86 black and striped white 
7 black yellow 
7 black white 
The mother had been a white moth, the father a black 
moth. The offspring (of this table) consisted of a small number 
of whites, and the majority of a “‘gris-marron ou moues foncé,” 
in other words, a mélange hétérogéne of the white and the 
black character, but without predominance of either. 
“The fact of greatest interest in this cross is the fusion, or at 
least the close juxtaposition, of the black and the striped charac- 
ters in half of the caterpillars of this lot. These worms at the 
same time black and striped are most curious and constitute a 
new character without any intermediate.” 
The further evolution of these new types was as follows: 
The group with black-and-striped worms and yellow cocoons 
gave :— 
No. or Inpivipuats Worms Cocoons 
a individuals black and striped yellow 
7 37 black and striped white 
29 black yellow 
47 1 38 black white 
13 white yellow 
20 ; 3 
i, white white 
re 66 striped yellow 
63 striped white 
The group with black-and-striped worms and white moths 
gave:— 
