198 WILLIAM T. M. FORBES 



Blotch mines on upper side of leaves of oak, especially on Quercus alba, Q. macro- 

 carpa, and Q. bicolor. 



58. L. cervina Walsingham. Distinguished from the preceding by the pale ground 

 color of wings, their coppery luster toward apex, and the indistinct markings. 6 mm. 



New York. 



59. L. fletcherella Braun. Fore wings reddish ocherous; a pair of costal and 

 dorsal streaks at one-third, the dorsal one long, oblique, curved, with its pointed 

 apex directed toward apex of costal streak; a median, angulated fascia; a pair of 

 opposite streaks at two-thirds; between these and a white streak before apex, 

 in middle of wing, a white spot. 8.5-9 mm. 



Ottawa, Canada. 



Blotch mines on white oak. 



GO. L. arcuella Braun. Fore wing reddish orange with markings shining white; 

 first costal streak at one-third broader than long; first dorsal streak nearly 

 perpendicular, rectangular; median angulated fascia, with dark margin not pro- 

 duced at angle; costal streak at two- thirds strongly curved; an opposite dorsal 

 streak; a curved costal streak enclosing apex; apex dusted with blackish-brown 

 scales. 10 mm. 



Virginia. 



61. L. betulivora Walsingham. Wings pale reddish ocherous and markings 

 dull white, with faint margins; markings as in preceding, but streaks at two- 

 thirds very indistinct, and dusted apex not enclosed by a white streak. 7 mm. 



North Carolina. 



Small, round, blotch mines on leaves of birch. 



62. L. bethunella Chambers. Fore wing reddish orange; markings as in two 

 preceding species, except that first pair of streaks are longer and the costal one 

 of the pair is decidedly oblique; the external dark dusting of the fascia produced 

 at the angle to the space between the streaks, at two- thirds; apical dusting pre- 

 ceded by a white spot. Tarsi white. 6.57.5 mm. 



Blotch mines on leaves of various species of oak. 



63. L. picturatella Braun. Distinguished from the preceding by the conspicuous, 

 black spots near the ends of the tarsal segments. 6.5-7 mm. 



Connecticut; New York; New Jersey. 



Brownish blotch mines on upper side of leaves of bayberry, Myrica carolinensis. 



64. L. fasciella Walsingham. Fore wings reddish orange; a median, very 

 obtusely angulated fascia, its external, dark dusting being produced backward into 

 the apical dusting. No costal or dorsal streaks. 6-7 mm. 



Ohio and Kentucky. 



Oval blotch mines on leaves of various species of oaks. 



65. L. castaneaeella Chambers. Fore wings reddish orange; a small, white, 

 costal spot at one-third; a median fascia very obtusely angled, its dustings extend- 

 ing backward to the costal streak at two-thirds; opposite this streak, a faint 

 dorsal streak; a small, white streak before dusted apex; dusting behind fascia 

 and in apex sometimes almost entirely lacking. 6-7.5 mm. 



Oval, blotch mine on chestnut and oak. 



66. L. guttifinitella Clemens. Reddish orange; two straight, or nearly straight, 

 fasciae, at one-third and one-half, respectively; a costal spot at two-thirds and 

 opposite it, a rather oblique, dorsal streak; apical dusting black on a white 

 ground and extended to tornus; a white streak along upper edge of dusting near 

 apex. 7 mm. 



Mine a broad, tortuous tract, on poison ivy, Rhus toxicodendron. 



67. L. obstrictella Clemens. Reddish brown; two, nearly straight, silvery fascise, 

 the second nearly perpendicular, opposite costal and dorsal streaks at two-thirds, 



