644 WILLIAM T. M. FORBES 



brown, with large white dorsal patches, with primary setae only; iv and v on 

 one tubercle, vi of two setse. 



Northern; south to Pennsylvania and Colorado; also in Europe. New York: 

 Crosby (Yates County), Ithaca, West Danby, Karner. 



6. P. carduidactyla Riley. Fore wing dark wood-brown or tawny brown; an 

 irregular antemedial oblique blackish shade; a contrasting chocolate -brown tri- 

 angle over end of cell, touching the costa, at least at its outer end, with a paler 

 band beyond it; a more or less distinct, paler, subterminal band across both 

 feathers. Fringe of inner margin white, cut with black. Hind wing with a well- 

 marked triangular black-tipped tuft at middle of third feather, and some scattered 

 scales. 20-27 mm. 



May to September. Larvae several together in a web in heads of thistle. 

 Light* straw yellow ; head, cervical shield, thoracic legs, tubercles, and anal plate 

 black; eleventh segment with two transverse black marks. Pupa very slightly 

 angular. 



General. 



IV. Hind icing with a strong tuft about three-fifths way out on third 

 feather, and a very small one at apex; fore wing vnth a strong tuft beyond 

 middle of inner margin. Palpi and frontal tuft short (Amblyptilia) . 



7. P. punctidactyla Haworth. Fore wing mottled, brownish black and cream- 

 white, with a blackish triangle and band before the subterminal line. 16-18 mm. 

 (cosmodactyla Hiibner, monticola Grinnell). 



Larva green, with green prothorax; secondary hair fine, not clubbed, dorsal 

 primaries single-haired, subventrals with two hairs; on flowers and young seeds 

 of Stachys, columbine, geranium, and other herbs. 



Northern Illinois and west; doubtful eastward. Europe. 



8. P. acanthodactyla Hiibner. Similar to P. punctidactyla,, less mottled, and 

 strongly shaded with wood-brown and gray. 



Larva with several-haired warts, the longer hairs swollen just before their 

 tips, and with fine, somewhat clubbed, secondary hair; tubercles iv and v united. 

 On mints, Ononis, Pelargonium, Euphrasia, and others. 



Europe; California. All eastern records are doubtful. New York: Otto and 

 West Farms (doubtful). 



V. Third feather of hind wing relatively short, with a very large tuft well 

 beyond the middle. Front only a little rough-scaled, without any conical tuft, 

 (vEucnsemidophorus Wallengren). 



9. P. rhododactyla Fabricius. Bright ochre yellow; fore wing with an oblique 

 white streak reaching inner margin at one-third, a patch in the cell beyond the 

 middle, and a postmedial line, touching the base of the notch; with a little dark 

 brown before it. Hind wing gray-brown. 20 mm. 



June. Larva a leaf roller on rose; with fine clubbed secondary hair; primaries 

 distinct, but somewhat associated with secondaries to form rudimentary warts; 

 iv and v united. 



St. Louis, Missouri; probably introduced from Europe. 



2. OXYPTILUS Zeller 



(Pterophorus Latreille, not Hiibner; Geoffrey, in part) 



Similar to Platyptilia; no distinct frontal tuft; palpi slender, second segment 

 with a slight apical tuft, third pointed. Fore wing with first feather in our 

 species simply lanceolate, with the hind angle only indicated by a black tuft 



