isns.i 247 



mai'ginecl along its costal edge, and also beneath its apex, and terminating before the 

 middle, its apex closely approaching, and frequently uniting with, the first dorsal 

 white tooth. There are four costal and three dorsal shining white teeth, broad and 

 conspicuous, internally black-margined, the first costal and first two dorsal ones 

 being also partially black-margined externally. Dorsal margin with a rather con- 

 spicuous white spot or line between the base and the first wliite tooth. At the apex 

 is a black streak. Cilia pale brownish-white beyond a conspicuous broad black 

 dividing line running from the fourth white costal tooth round to the tornus ; 

 brownish-golden anteriorly. Exp. al.,%.h —^ mm. Hind-ioings satiny-grey; cilia 

 pale ochreous-grey. Abdomen above grey, with grey anal tuft, in the (?, greyish- 

 brown, with ochreous anal tuft, in the $ ; much paler beneath. roslerior tarn 

 whitish, strongly dark-spotted above. 



Type, (^ $ (selected from a loug series bred from Pi/nis mahis at 

 Corfe Castle). Mas. Bankes. 



In a common form of this species, to which the varietal name dffiexella was 

 applied by Steudel (/. c), the end of the white basal streak unites with the upper 

 part of the first dorsal white tooth : it sometimes happens that this is the case on 

 one fore-wing, but not on the other. About 40 °j^ of my bred specimens, which 

 number about 150, are var. deflexella as to both fore- wings. 



Larva — in mine on under-side of leaves of Pyrus mains, and its 

 cultivated varieties, v — vi, is— x. I once bred, together with some 

 spinicolella, several genuine concomitella from mines collected at Corfe 

 Castle in leaves of Primus communis (spinosa, L.). 



Pupa — vi — vii, x- iii. I have no note about the cocoon. 



Imago — \\i — iv, vii — viii. 



Broods — two. Hibernates as pupa. 



Sah. — England, generally distributed and common. Central 



EUROPE. 



Easily separable from all its allies by the breadth of the white 

 basal streak, and of the costal and dorsal teeth, which occupy a larger 

 proportion of the wing-area than in any of them, and by the white 

 spot or line on the dorsum between the base and the first tooth being 

 larger and more constant than in any other species. It mav also be 

 distinguished from pi/rivorelln, n. sp., which it most closely resembles 

 in size and colour, by its not showing nearly so much difference in 

 colour between the sexes, though the males are rather darker than 

 the females, and by the white basal streak closely approaching the 

 tirst white dorsal tooth when it does not, as frequently happens, 

 unite with it, whereas in pyrivoreUa there is practically no tendency 

 towards such union. 



Although this species is the Argyromiges junonieUa of Stainton 

 (Zool., 1848, p. 2095, No. 18, fig. 17;, it is totally distinct from the 



Y 2 



