326 AMERICAN MICRO- LEPIDOPTERA. 



This species, of which the above is Clemens' description, is the 

 the common miner on the upper side of hickory in the eastern 

 United States. The mines are irregular blotches ; often two or 

 more mines are confluent. The pupa is formed under an oval 

 silken flat cocoon. The mine occasionally occurs on leaves of wal- 

 nut and butternut. 



Imagoes vary greatly in the distinctness of the fasciae and the 

 dark dusting ; often the first fascia does not extend to the costa. 

 There is a faintly indicated pale basal streak from the inner angle 

 to the fold. 



Alar expanse 6-7 mm. 



1 Lrfitliocolletis lentella sp. nov. 



Plate XXIII, Fig. 9. 



Antennae grayish, broadly annulate with dark brown. Face and palpi whit- 

 ish, sometimes with a golden tinge. Tuft reddish saffron, mixed with whitish 

 scales behind. 



Thorax and forewings deep reddish saffron. A narrow white line on each 

 side of the thorax is continuous with an indistinct curved whitish basal streak 

 at the inner angle. This streak is sometimes absent, its position being indicated 

 by the few black scales which form its external margin. There are two angu- 

 lated white fasciae, the first at about the basal third, the second at the middle of 

 wing length, both strongly margined externally, and on the costa internally 

 with black scales. The first of these fasciae sometimes consists only of a costal 

 and a dorsal streak, not connected, but of which the black dusting is continuous. 

 At the apical third is a white costal spot, margined on both sides, and beneath 

 with black scales. Beginning a little farther from the base is a long oblique dor- 

 sal streak, strongly margined behind with black scales. Oppo'site its apex is a 

 small white costal spot overlaid with black scales. Apex of the wing densely 

 dusted with black on a whitish ground. A dark brown line runs through the 

 middle of the cilia, which are grayish ocherous, becoming gray toward the tor- 

 nus. Alar expanse 6.5-7 mm. 



Hindwings gray. Cilia gray, with an ocherous tinge. Abdomen dark gray 

 above, pale reddish beneath. Anal tuft reddish. Hind tibiae reddish toward 

 their apices, tarsi white, annulate with black. 



Described from eleven specimens; five bred from a blotch mine 



on the upperside of black birch, 

 Betida lento, L., from Cal dwell, 

 K J., in July, 1902, by Mr. W. 

 D. Kearfott ; two bred from a 

 much wrinkled blotch mine on 

 the upperside of Ostrva Viraini- 



Mine of L. lentella. TT -i /-t f\\. 



ana, Hamilton County, Ohio, in 

 June, 1908; one flown specimen, Caldwell, N. J., May 17th, Mr. 



