•^^0 [Decbmbeh 



.4. Spireafoliana, jyulchellana, fuscocUiana, duhiana, Lamiana, nubeculana. I'lu- 

 tanana. 



'0^ Tip of fore wings not acutely produced. 



A. striatana. 



GROUP II. 

 Hind wings with median vein 4-branched. 



g Tip of fore wings acutely produced. 



^4. ocellana. 



GEOUP III. 

 Hind wings with median vein 4-branehed. 



^ Tip of fore wings not acute, sometimes bluntly produced. 



A. costomaculana, Virginiana, mediofasciana, fasciolana, striatana, Packardiana. 

 A. striatftna appears to be a connecting link between the groups, as 

 the structure of its wings is by no means constant. In some speci- 

 mens the median vein is o-branched ; in others 4-branched, the two 

 central branches arising from a common stalk; and again it is 3- 

 branched with the central branch furcate at the extreme tip. This is 

 the first example I have ever noticed of variability of wing structure 

 in a species. The species may be, so to speak, in a transition state and 

 it would be interesting in the future to know which wing type it will 

 ultimately assume. I have seven specimens before me, in one of which 

 the median vein is simply 3-branched, in three others the central branch 

 is furcate at the extreme tip and in three others it is furcate from the 

 middle. Have we an instance of a forming species in this insect, or is 

 this variation of structure accidental and of no significance ? 



Anchylopera ocellana n. s. — Fore wings brownish, with pure brown towards 

 the tip. The costa is geminated with dark brown from the base to near the tip 

 and thence with four or tive white streaks. Beneath the tip, is a laro-e, con- 

 spicuous ocelloid spot, which is white, somewhat varied with brownish and 

 having a few dark central dots, sometimes indistinct. Cilia along the hinder 

 margin white? Hind wings grayish. 



The specimens before me are worn and imperfect and it is scarcely 

 prudent to draw a description from them, but the species is markedly 

 characterized by the white patch beneath the tip of the fore wings. 

 The labial palpi are almost entirely denuded and appear to me not to 

 correspond to those of the genus in which I have placed the species. 

 I do not however entei-tain any doubt that the insect is improperly lo- 

 cated. The fore wings are very acutely pointed and deeply excised 

 beneath the tip. The neuration of the wings is normal. In the hind 

 wings the costal and subcostal veins are free to the base. The branches 



