306 AMERICAN MICRO-LEPIDOPTERA. 



Lithocolletis obsoleta Frey and Boll. 



Plate XXII, Fig. 14. 



Lithocolletis obsoleta Frey and Boll, Stett. ent Zeit., xxxiv, 211, 1873. Chambers, 

 Cin. Quart. Jn. Sci., i, 202, 1874. Dyar, Bull. 52, U. S. Nat. Mas., 

 1902, No. 6279. 

 Syn. obsoletella Chambers, Bull. Geol. Surv. Terr., iv, 155, 1878. 



Antennas whitish ocherous. Face and palpi white. Tuft whitish in the 

 center, brownish toward the sides. 



Thorax and forewings ocherous. There are four costal and two dorsal streaks, 

 faintly indicated by a lighter shade. In some of the type specimens these 

 streaks are almost obsolete, the wing then being nearly unicolorous. The first 

 pair of streaks just before the middle are very oblique, the dorsal being the 

 larger. The triangular second dorsal streak is opposite the space between the 

 second and third costal streaks. In the apical part of the wing is an indistinct 

 brownish spot, sometimes wanting. An indistinct brownish line in the cilia has 

 a faint bluish lustre around the apex. Cilia whitish ocherous, darker toward 

 the tornus. Expanse 8 mm. 



Hindwings grayish ocherous, with slightly paler cilia. Abdomen in male 

 grayish, in female pale ochreous. Legs whitish ocherous, tarsi not at all or but 

 faintly spotted. 



Hab. Massachusetts, the locality from which the type specimens 

 were obtained. Easily distinguished from all other species by the 

 absence of any clearly defined markings. 



Litliocolleti* argentinotella Clemens. 



Plate XXII, Fig. 15. 

 Lithocolletis argentinotella Clemens, Proc. Acad. Nat. Sci. Phil., 321, 1859. Tin. 



No. Am. 66, 78, 1872. Chambers, Can. Ent., iii, 148, 1871 ; xi, 89, 1879. 



Frey and Boll, Stett. ent. Zeit., xxxiv, 213, 1873. Chambers, Cin. 



Quart. Jn. Sci., i, 202, 1874; ii, 101, 1875. Busck, Proc. Ent. Soc. 



Wash., v, 190, 1903. Dyar, Bull. 52, U. S. Nat. Mus., 1902, No. 6283. 

 "Antennse silvery. Front and tuft silvery. Thorax pale reddish saffron, with 

 a rather short, unmargined, silvery basal streak, with, five costal and four dorsal 

 streaks of the same hue. The first costal and dorsal streaks unmargined, the 

 first dorsal being near the inner angle of the base, tapering to a point in the mid- 

 dle of the wing from a very broad base ; the first costal streak rather slender, and 

 only one-half as long as the first dorsal; the second costal and second dorsal con- 

 nected about the middle of the wing, and dark margined toward the base by a 

 line much curved in the middle; the third costal and third dorsal opposite, and 

 each dark margined internally; the fourth dorsal about midway between the 

 fourth and fifth costal streaks; sometimes the fourth costal and dorsal streaks 

 with a few dark internal scales, sometimes unmargined. At the apex is a small 

 patch of scattered black scales; the hinder marginal line rather indistinct; cilia 

 saffron, paler on inner margin. Hindwings shining silver-gray, cilia rather 

 darker." 



The above is Clemens' description. 



