428 LÉPIDOPTÉROLOGIE COMPARÉE 



sometimes approaches pomonaria in the very faint development 

 of the terminal suffusions. In very rare instances the scaling is 

 weakened as in that species. 



The insect, as one might expect from its gênerai resemblance 

 to zonaria, can vary toward it but slightly, but this it does in the 

 appearance of the subterminal band, which then displays but 

 little of the scalloped appearance of ■pomonaria. Finally, as in 

 zonaria, the suffusions along the inner margin and the black 

 scales on the veins, may be very heavily marked. For some 

 reason, I cannot détermine, the msect varies very little in size 

 and in ail of the examples which I now possess, it is greater in 

 wing expanse than wild examples either of pomonaria or zonaria. 



Genitalia. 



I. Mâle (PI. K, Fig. 33). — The shape of the valves is much 

 nearer that of pomonaria, for we hâve the same rounded tip with 

 no tendency toward the indentation or pointmg, so marked in 

 zonaria. They follows zonaria somewhat toward the base, in being 

 slightly broader than those of pomonaria are. The costal ridge 

 is broad and slightly raised, thus again resembling the maie 

 parent. 



The gnathos is squamous and, while not so broad as in pomo- 

 naria, follows that species in outline. The cornuti are well 

 developed, for we hâve a huge comb-like band of spines just as 

 in pomonaria, a band much more formidable than the few weak 

 spines with which zonaria is furnished. 



The œdeagus is almost exactly the same as that of zonaria. 



IL Female. — Just as in the other hybrids the female organs 

 are the same as those of both parents. 



Habits of the imagines. 



The times of the émergence of the females are very irregular. 

 When I did manage to secure a few, two of them emerged in 



