6i8 William T. M. Forbes 



Caterpillar brown with a rosy tint; with rough darker head, and shining black 

 mesothoracic plates; on alder and hazel, living between two or three leaves in a 

 conical case of frass lined with silk. 



Distribution unknown. Indistinguishable except by breeding. 



15. A. comptoniella Hulst. Fuscous gray, rather lighter and bluer toward the 

 base, and on the costal half of the median area. Tuft blackish-brown, followed by 

 a dull Indian-red shade, and sometimes by a pale antemedial line. Discal dots 

 separate and black; postmedial line faint. 25 mm. 



Caterpillar blackish, with broad diffuse pale reddish dorsal and lateral bands; 

 head dark red, black in the sutures; cervical shield pale red, contrasting; feet 

 black. It feeds on sweet fern and on bayberry; in an oval case with a soft slender 

 neck; lined with silk and covered more or less with bits of leaves, etc. 



Maine to New Jersey. There is a race, or closely related species, on Myrica in 

 Florida. This form is doubtfully distinct from A. ruorifasciella, and determinable 

 only by breeding. 



New York:* Bhinebeck. 



16. A. betulella Hulst. Similar to A. comptoniella. General wing surface shaded 

 with reddish and dusted with white, but without a red antemedial band. 



End of July. Caterpillar on black and white birch, in a case similar to that of 

 comptoniella but almost wholly of silk. 



Maine to New York; Colorado; California. Probably a food variety of A. 

 comptoniella. New York: Ithaca. 



17. A. coryliella Dyar. Gray, not shaded with white, nearly even; antemedial 

 band slightly browner, pale-edged, with a darker shade beyond it at costa. Post- 

 medial line a little more distinct, finely crenulate. 



June to August. Larva in the usual case on hazel (Corylus) ; pupa in a dense 

 hard oval ichneumon-like cocoon. 



18. A. irrubriella Ely. Similar to A. latifasciella; head and thorax not so 

 reddish; band beyond the scale ridge narrow; only slightly marked with orange- 

 red; outer line more even, not followed by an orange-red shade. 19 mm. 



July. 



East River, Connecticut. 



19. A. malipennella Dyar. Male fore wing short and broad, with distorted 

 venation and m-cu very long. Gray thorax tinged with copper-red; scale ridge 

 short and black; a white triangular shade in median area, as in A. normella, 

 containing a single black discal dot. 12 mm. 



East River, Connecticut. 



This type is unique, and may be a monstrosity of A. normella. 



II. Fore icing smooth-scaled (Mineola). 



20. A. tricolorella Grote. Wings irregularly black-dusted on a white base, 

 appearing mottled gray. Antemedial line black, forming a triangular shade on 

 costa; a triangular reddish patch before it on inner margin, deepening to black, 

 basally, and preceded by a white line. Discal lunule contrasting, black, in a pale 

 shade; a darker medial shade joining the postmedial' line at the discal fold; post- 

 medial line pale, edged within with black, and followed by a chestnut band. A 

 blackish apical streak to costa. Head and collar dark red; thorax grayer. ■ 



Quebec and Maine to California. New York: Catskills. 



21. A. rubescentella Hulst. Gray, shaded with reddish, with two inconspicuous 

 darker discal dots, and a reddish antemedial band. 25 mm. 



Tennessee. 



22. A. amplexella Ragonot. Blackish gray, with a large well-defined white patch 

 at middle of costa, containing the sharply defined black discal points. Antemedial 

 line single, diffuse, white, oblique outward; postmedial black, indented in the 

 discal fold as usual, followed by white scales, and with a little white scaling just 

 before the margin. Hind wings and body browner. 15 mm. 



Quebec to Texas. 



