THE CANADIAN ENTOMOLOGIST. 49 



not confined the whitish streaks exclusively to the apical part of the 

 -wing, I should have considered captured specimens of this species as 

 specimens of his species, which he says also feeds on C. tomcntosa. But 

 then the habits of his species are those of the genus generally — that is, 

 it leaves the mine and pupates under the turned down edge of the 

 leaf. 



Nor can there be any" suspicion that my first surmise about the mine 

 was correct, viz., that it is a Lithocollctis mine, from which I have failed to 

 rear the imago ; whilst I have bred an Omix, which was unobserved in 

 another mine on the same leaves. For in one of the instances in which I 

 "bred it, I placed, one evening, a single Haw leaf in a wide-mouthed vial, 

 containing nothing else. The leaf was carefully examined, and contained 

 nothing but the mine and pupa of this species. The next morning the 

 Ornix had emerged, and its pupa skin was projecting from the mine. 



I have, therefore, described it as a new species, notwithstanding its 

 close resemblance to O. Crataegifoliella, which Dr. Clemens says feeds 

 upon the same leaves, but which I have never found on or in them. 



For the purpose of comparison with the preceding species, and with 

 the one described afterwards {O. pnmivorclla), I here quote Dr. Clemens' 

 ■description of his species. 



O. Crataegifoliella, Clem., Proc. E?it. Soc. P/iila., Nov., 1861, (p. 94 of 

 Mr. Stainton's edition.) 



" Labial palpi whitish. Head dark brown and gray intermixed. 

 Antennae dark brown, faintly annulate with whitish. Forewings dark 

 brown, with a purplish hue. Along the inner margin, from the base to 

 the anal angle, whitish dusted with dark brownish. In the fold at the 

 base is a dark brown streak, and a small blotch of the same hue beyond 

 the middle, nearly reaching to the inner margin. Toward the tip are a 

 few whitish costal streaks, and at the apex a small round dark brown spot 

 in a whitish patch, with a circular dark brown apical line behind it ; ciliae 

 "blackish gray. Hind wings blackish gray \ ciliae rather paler. Abdomen 

 blackish, tipped with dull yellow." 



" The larva mines the leaves of Crataegus tomentosa (black thorn) in 

 September, and becomes a pupa early in October, weaving a reddish- 

 brown cocoon in a turned down edge of the leaf. The pupa case is thrust 

 from the end of the cocoon at maturity, the imago appearing early in 

 May. There is doubtless a summer brood, but I have not sought for it. 

 The head of the larva is brown • the body greenish-white, with the dorsum 



