248 PAPERS BY DK. B. CLEMENS. 



coon, lets itself fall to the ground, where it attaches the cocoon 

 to some adjacent object. 



C. Panicifoliella. Fore~wings dark brown, with a violet 

 hue ; from the middle to the tip, bright silvery, with a bright 

 silvery band about the basal third. Cilia violet-brown. 

 Hind-wings violet-brown, cilia fuscous. 



Head and thorax silvery. Antennas brown, touched with 

 a silvery hue towards the base. 



The larva mines the leaf of Panicum clandestinum early 

 in July. My specimens were taken July 9th, and at that 

 time many mines were tenantless and appeared to be old, and 

 are characterized by the circular piece cut out of the upper 

 cuticle. The mine begins near the base of the leaf as a 

 minute, threadlike line and runs to the tip, Whence returns 

 along the side to the middle of it, when it is irregularly en- 

 larged by the larva. 



On July 12th, five specimens taken on the 9th began their 

 preparations for pupation, and on the 25th of July two images 

 made their appearance and continued to appear for several 

 days subsequently, 



n, Pennsylvania, 



ELACHISTA. 



Cosmiotes. Proc. Acad. Nat. Sci., Jan., 1860, p. 9.* Ib., 

 May, 1860, p. 172. f 



Elachista Brachyelytrifoliella. Fore-wings dark grayish- 

 brown from the base to the middle of the wing and thence to 

 the tip, blackish-brown between the markings. The costa at 

 the base is white, and connected with the white costa, about 

 the basal third of the wing, is a short, oblique silvery-white 

 costal streak. Near the apical third of the wing is another 

 conspicuous silvery-white oblique costal streak, nearly meet- 

 ing in the middle of the wing a dorsal streak of the same 



_ /-\rr TT T 1 O 



- l^7V^ U'/VlsB, p. VI. 11. 1. O. 



f See ante, p. 133. H. T, S, 



