19 



posterior side is a small tooth and two short diverging club-shaped 

 bristles. The pupae attach themselves by a cluster of fine hooks 

 at the end of the abdomen to a button of silk spun by the cater- 

 pillar before pupating. The pupal stage lasts about a week. 



So far as I can learn, nothing is known of the egg and early 

 larval stages. Both Fitch and Riley expressed the opinion that 

 there were two generations in a year, but it has not been observed. 

 The moths are on the wing here in Amherst during the latter part 

 of June. 



OXYPTILUS DELAWARICUS. 



Oxyptilus Delawaricus Zell., Verh. z.-b. Ges. Wien, XXIII., 



p. 318 (1873). 

 Oxyptilus delawaricus Wlsm., Pter. Cal. and Ore., p. 29, PI. 



II., fig. 7 (1880). 



Expanse of wings, 17 to 18 mm. Head, thorax and fore wings 

 light reddish brown. Palpi projecting forward about the length 

 of the head, acuminate, lighter beneath and at the tip, the second 

 segment tufted beneath at the end. Antennas fuscous, dotted 

 with white above. Abdomen reddish brown at the base, yellowish 

 white beyond and indistinctly marked with whitish scales and 

 lines, but not so conspicuously marked as tenuidactylus. r Legs 

 white, barred with dark brown. 



Fore wings with a few whitish scales scattered along the costa, 

 which is slightly shaded with fuscous beyond the middle. There 

 is a faint brown spot on the cell before the middle, and an 

 indistinct pale spot on the basal fourth of the hind margin. Two 

 oblique white stripes cross the first lobe, dividing it into thirds, 

 the outer stripe appearing again on the second lobe, while only a 

 trace of the inner stripe is occasionally seen on the second lobe, 

 extending along to the inner end of the fissure, which is edged 

 with white and dark brown. The ground color of the lobes is 

 often darker than the rest of the wing. The costal fringe from 

 the outer white stripe to the apex is white, that within the fissure 

 is brown, while the fringe on the rest of the second lobe is white, 

 cut with brown at the apex, and from the anal angle along the 

 hind margin to the middle of the lobe, beyond which in one or two 

 places black scales are seen in the white fringe. Hind wings 

 darker brown than the fore wings, and with the usual cluster of 

 black scales in the fringe, near the apex of the third feather. 

 Nine specimens examined. 



Habitat. Canada, New Hampshire, Massachusetts, California. 

 Early stages andfood plant unknown. 



