THE GENUS ENNOMOS (SENS. STR.). 29 
the insects showed a slight tendency to anticipate the emergence 
of the parent forms. 
DeEscRIPTION oF PRIMARY HyBRip. 
Ennomos hybrid winni=E. subsignaria 3 x HE. quercinaria @. 
Wing expanse, 48-50 mm. 
(a) The Male.—The face is provided with a cone of projecting 
scales, whitish at the base and becoming yellowish toward the 
apex, just as in quercinaria, although the influence of subsignaria 
is seen in the neatness and smoothness of the bristly scales. 
The antenne are practically as long as and as stout as those of 
quercinaria, a rather curious feature, as those of subsignaria are 
rather short for a species belonging to this group. 
The ground colour of the wings is a dirty white, more or less 
freckled with fuscous scales. It becomes more definitely ochreous 
toward the termen, this being due to the presence of similar 
suffusions in quercinaria, which become more orange outward. 
Both the first and second line of quercinaria are present, and 
practically to the same degree of intensity. When the female of 
quercinaria used has belonged to the form known as var. eques- 
traria (F’.), then the banded state of the wings peculiar to that 
form is transferred to the hybrid. 
Below, except for the paleness of the ground colour and an 
exaggerated discoidal point, the wings bear, in a somewhat 
diluted form, the usual suffusions of quercinaria. In shape the 
wings, to a very great extent, follow quercinaria, and exhibit to 
a somewhat less degree the notches and excisions of that form. 
The thorax and abdomen, save for an ochreous suffusion at 
the bases of the wings, are almost as white as in pure 
subsignaria. 
The male genitalia likewise show the great influence of this 
parent, although perhaps the valves show more quercinaria 
characters than any other part of the genitalia—v. e. instead 
of an outline smooth and somewhat rounded, we have one 
rugged and thumb-like, and in place of a thin band of some- 
what attenuated spines on the ‘‘ball”’ of the ‘‘ thumb,” we have 
a dense band of stoutish spines. 
The penis (i.e. the whole organ, dvdwagqus, anellus, etc.) is 
broad and short, as in subsignaria, and the crescent of small 
spines at the orifice is more decided than in quercinaria, to 
which species, however, there is a closer resemblance in the 
cornuti on the vesica. The influence of subsignaria, too, is very 
evident when one examines the furca. The arms of this structure 
diverge just as in that form; but naturally the tendency, in- 
herited in part from quercinaria, for the arms to converge and 
for the whole organ to be narrow and long, is not without its 
effect, as one can judge from fig. 3a. 
(To be continued.) 
