THE CANADIAN ENTOMOLOGIST 191 



ated from one another by white fasciae. The last of these bands 

 crosses the tip of the wing. The costal extremity of the white 

 fascia preceding it lies over the tip of vein 7, but there is no vein 

 at its extremity on the termen. The extremities of the sixth 

 band lie between veins 7 and 9 on the costa, and just beyond vein 



5 on the termen. The white fascia preceding this band lies over 

 the tip of 9 on the costa, and over the tip of 5 on the termen. 

 This general type of colour pattern may be regarded as primitive 

 not only for Lithocolletis alone, but for the entire family Graci- 

 lariadcB. In more ancestral forms, where all the veins are present, 

 the tip of vein 6 occupies the position marked by the extremity 

 of the last white fascia, that is it is almost opposite the tip of 

 vein 7. This must be regarded as the normal position for vein 6 

 in this group. Therefore, in Lithocolletis, where no vein is present 

 at the extremity of this fascia on the termen, we must regard vein 



6 as the vein which is absent, as has been done in the more recent 

 literature on the group. 



In Apophthisis, the last vein to reach the termen before the 

 apex occupies the normal position of vein 6. For this reason, 

 vein 5 has been here regarded absent, in a group where it is, with, 

 this exception, uniformly present. 



Apophthisis pullata, n. sp. 



Head and palpi gray, antenna? gray with paler^ annulations. 

 Fore wings clothed with sordid grayish white, fuscous-tipped 

 scales, giving the wing in general a speckled gray appearance. 

 An indistinct black streak in the fold from near base to one-third, 

 a second shorter streak in the fold beyond it. The scales around 

 the apex form an indistinct line in the gray cilia. Hind wings 

 gray. 



Legs gray; tibise tipped with white; tarsi annulate with white. 



Expanse: 5.5-6 mm. 



Two specimens, both males, near Cincinnati, O. The larva 

 is a miner in leaves of buckthorn (Rhamnus lanceolata Pursh.) 

 The mine lies deep in the leaf substance; linear at first, gradually 

 broadening into an irregular blotch, 5 or 6 mm. wide, and oc- 

 cupying about one-fourth of the area of the leaf. The leaf retains 

 its green colour, so that the mine is not plainly visible during the 



