THE ENTOMOLOGIST. 



Vol. XVIIL] NOVEMBEE, 1885. [No. 270. 



CONTRIBUTIONS TO THE HISTORY OF THE 

 BRITISH PTEROPHORL 



By Richard South, F.E.S. 

 (Continued from vol. xvi., p. 77.) 



MiM^SEOPTiLUS, Walleiigren. 

 plagiodactylus, Sta. 



(Plate I., Figs. 1 & 2.) 



Imago. — Expanse, 9-10 lines. Fore wing gray-brown; some black 

 scales along tbe costal margin, inner margin ochreous-brown. At the 

 digital juncture is a black spot of irregular shape, and between this and the 

 base of the wing is a black dot. Towards the apex of the outer digit is a small 

 blacKish hnear spot or dash. All these markings are inconstant as regards 

 size and intensity ; especially is this the case with the digital spot, which lu 

 some examples is only very faintly indicated, and in others stands out 

 prominently. Fringes brown, paler round the inner edge of the outer 

 digit. The bases of the digital fringes are whitish, with a series of small 

 patches of black scales arranged in the following order : — One at angle and 

 one at tip of outer digit, one at angle of inner digit, and two between this 

 and tip of inner digit. Tip of outer digit subacute, that of inner obtuse. 

 Hind wing and fringes slightly darker than fore wing. Head and two-thirds 

 of thorax (prothorax and mesothorax) gray-brown, remainder of thorax 

 (metathorax) and abdominal juncture pale ochreous-brown; abdomen gray- 

 brown. Legs gray-brown. May and June. 



Larva.— Length, 4-4^ lines, attenuated posteriorly. Head smaller 

 than 2nd segment, pale shining yellowish green, freckled with brownish ; 

 mandibles pale brown ; a black spot on each cheek. Ground colour obscure 

 green ; segmental divisions yellowish green. Dorsal stripe reddish pink, or 

 rose-madder, most distinct on the 9th to 12th segments, and indicated only 



ENTOM. — NOV., 1885. *N 



