ANNETTE F. BRAUN. 301 



The mine also occurs on Cratcegus mollis Scheele, and then the 

 parenchyma is almost completely consumed. 



Occasionally, specimens of cratcegella occur in which the fourth 

 costal streak is wanting, but malimalifoliella may be distinguished 

 from these by the relative position of the third costal streak, which 

 is placed farther back, almost equally dividing the space between 

 the second costal and the apex. 



Lithocolletis cratcegella Clemens. 



Plate XXII, Fig. 8. 

 Lithocolletis cratsegella Clemens, Proc. Acad. Nat. Sci. Phil., 324, 1859; 208, I860. 



Tin. No. Am , 76, 141, 1872. Chamber?, Can. Ent,, iii, 55, 108, 1871; 



v, 50, 1873; xi, 73, 1879. Bull. Geol. Surv. Terr., iv, 100, 1878. Wal- 



siugham, Trans. Am. Ent. Soc., x, 202, 1882. Busck, Proc. Ent. Soc. 



Wash., v, 190, 1903. 



Antennae dark silvery gray. Face and palpi silvery. Tuft dark brown, mixed 

 with whitish scales. 



Thorax and forewings brownish golden, with a silvery basal streak continuous 

 with a white line on each side of the thorax and extending for two-fifths of the 

 wing length, black margined toward the costa and around its pointed apex. 

 Dorsal margin narrowly white toward the base. Four costal and two or three 

 white dorsal streaks, of which the first costal and the first two dorsal streaks 

 are dark margined on both sides, the others internally only. The first costal 

 streak, beginning at two-fifths, is oblique and rounded beneath, its internal mar- 

 gin produced along the costa to the base. The other three costal streaks are 

 nearly perpendicular. The first dorsal streak, somewhat nearer the base than 

 the first costal streak, also oblique, its apex a little beyond that of the first costal 

 streak, which it also touches. Second dorsal streak triangular, just before the 

 tornus and opposite the second costal streak. From the space between the second 

 pair of streaks, a streak of dark scales extends to the apex. Marginal line in 

 cilia blackish, with a decided bluish lustre. Cilia grayish ocherous. Expanse 

 6.5-7 mm. 



Hindwings and cilia gray. Abdomen dark gray above, silvery beneath, with 

 more ocherous anal tuft. Legs grayish, hind tarsi spotted with fuscous above. 



An underside miner on several related plants, viz. : Cratcegus 

 sp., apple, and wild cherry, Prunus serotina Ehrh. The mine is 

 rather small, usually lying between two veins. A common species 

 in the eastern United States. 



This species is distinct from any of the apple feeding species of 

 Europe. It has been made a synonym of L. blancardella Fab., 

 from which it differs in the much smaller size, more pointed basal 

 streak, and less oblique first pair of streaks. 



TBANS. AM. ENT. SOC., XXXIV. OCTOBER, 1908. 



