442 LÉPIDOPTEROLOGIE COMPARÉE 



thorax and abdomen of lapponaria nor the yellow rings of 

 zonaria are indicated. The face, thorax, abdomen and legs 

 beneath, on account of the superabundance of pale, rather pinkish 

 fur, are very like those of zonaria. The wings, which are of 

 variable length, are black, tipped with pale fur. 



Genitalia. 



I. Mâle. — It is unfortunate that the genitalia of the only 

 spécimen available for dissection were broken. However, many 

 of the détails can be made out. The valves are much narrower 

 than in lapponaria and bear distinct signs of following zonaria. 

 The costal ridge is thick, and fairly well raised. The gnathos 

 is rounded and squamous, not broad and rather smooth in the sur- 

 face as in lapponaria. The cornuti form a closely packed band of 

 sharp short spines — not clawlike as in lapponaria, but still very 

 much stronger than in zonaria, or even in both parents. 



The œdeagus is of the usually fairly narrow zonaria type. 



There is but little to be said about the female genitalia except 

 that they are perfectly developed. 



Habits of imagines. 



Thèse, as has been mentioned, émerge simultaneously with 

 their parents. The maie Aies strongly and pairs very readily 

 with the hybrid females but the females, after going through 

 the actions of oviposition, f ail to deposit any ova, and commence 

 to call again. 



(B) Pœcilopsis lapponaria cT x Ithysia zonaria Q = hybr. small- 

 mani. 

 Pœcilopsis hybr. smallrnani (Harrison, Ent., July 1910). 



This hybrid I secured myself and I found it very easy to 

 obtain when I could induce pupae of lapponaria to yield their 

 imagines when I happened to hâve females of zonaria. 



