The Making of Species 
Green Pheasant (P. versecolor) has been very 
slight. 
It is, of course, open to anyone to assert that 
such crosses are not true hybrids, as the species 
are not fully distinct, but mere colour-mutations. 
The fact of the intermingling, however, is a fatal 
blow to the theory of recognition marks, since it 
demonstrates that merely distinctive colouring is 
not a preventative of cross-breeding. To this 
matter we shall return later. 
FertTite Hysprips AMONG AMPHIBIA 
Our Crested Newt (Molge cristata) and the 
Continental Marbled Newt (JZ marmorata) 
interbreed in France, in the wild state, and the 
resulting hybrid was at first described as a 
distinct species, under the name of Molge déaszz. 
These two newts differ greatly in appearance. 
In the Marbled Newt the colouration is brilliant 
green and black above, and shows no orange 
below, thus differing much from that of the 
Crested Newt, which is black above and mottled 
with orange beneath, while the crest of the 
breeding-male of this species lacks the notches 
which are so conspicuous in that of the Crested 
Newt. 
INSECTS 
Among insects, M. de Quatrefages states that 
the hybrid progeny of the silk-moths Bombyx 
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