296 AMERICAN LEPIDOPTERA. 



% 



O. Ticinella; u. sp. — PI. IV, fig. 8. — Labial palpi white, third joint with a 

 wide blackish band, which leaves the basal third, extreme apex and upper edge 

 of joint free, second joint with a small, but distinct dot near the apex, withiu 

 and without. Head gray, strongly intermixed with brown on the vertex. 

 Thorax grayish-fuscous; sides darker. Forewings dark brown, with purple 

 lustre; eight or nine whitish costal striae, not very evident, nearly equidistant 

 and not reaching beyond middle of wing, the white being distinct only on and 

 closely to the costa, where they are rather wide and subtriangular ; ground color 

 between the striae of a decidedly darker brown ; a white spot at end of cell ; i)lical 

 spots large but not sharply defined, the first not quite, the second fully, attaining 

 the margin ; remainder of subplical space more or less speckled with fuscous, so 

 that the white is very little in evidence. Cilia with three entire lines, basal part 

 fuscous, remainder whitish ; a rather bright, white spot at the base of the cilia 

 opposite the space between the third and fourth costal striae (counting from the 

 apex). Expanse 7 mm. ; .28 inch. 



Hab. — Penna. (Hazleton). 



A small form. A single specimen, female, was bred by the writer 

 from Betula flava (yellow birch). An obscure dark species, the 

 white color being scarcely noticeable. 



O. Strobivorella n. sp. — Palpi yellowish-white, apex of second joint and 

 an ill-defined band of third fuscous. Face grayish-fuscous, tufts a rich brown, 

 occiput and thorax creamy white. Forewings grayish-brown ; seven or eight 

 costal striae, very short, being scarcely more, especially towards the apex, then 

 costal spots; a white spot at end of cell. Plical spots velvety black, very con- 

 spicuous, first not reaching the dorsal margin, second spot oval, and attains the 

 margin, remaining part of subplical space finely speckled with fuscous. Cilia 

 fuscous. Expanse 10 mm. ; .4 inch. 



Hah. — Penna. (Hazleton). 



A single male specimen, not in very good condition, bred from 

 Sorbus (mountain ash). The larva forms a cone similar to Graci- 

 laria. The cilia are defective, but what is left leaves scarcely a 

 doubt that the three lines are entire. 



O. arbutifoliella n.sp. — PI. IV, fig. 9. — Palpi white, apex of second joint 

 and a rather large spot on the third, externally, dark fuscous. Head white, tufts 

 pale fuscous. Thorax white. Forewings gray along middle of wing, dark brown 

 between the costal striae ; marking conspicuous, white ; six or seven distinct cos- 

 tal striae, inner ones very oblique, fourth and fifth striae (from the apex) remote 

 from each other, the latter extends as an undulating line towards the dorsal mar- 

 gin, which it attains at the tornus. Plical spots sharply defined, first spot elon- 

 gate and reaching half-way to dorsal margin, second spot elongate-triangular, 

 extending obliquely backward to within the dorsal margin ; subplical space con- 

 spicuously white, with scattered fuscous dots. Cilia white, three entire dark 

 lines. Expanse 9.-10 mm. ; .36-.4 inch. 



Hab. — Penna. (Hazleton). 



