April, 18S3.J 'l^i 



The hind-wings are pale brownish-grey, with a tine marginal line of a darker 

 hue ; fringes are grey, with a faint divisional stripe. 



Head, and central part of thorax, white ; palpi reddish-brown, edged above and 

 beneath by a white line ; antennaj brown ; patagise pale cinnamon-yellow ; the body 

 being of the same colour as the hind-wings. Specimens from the Amoor country 

 differ but little from our own; the ground-colour is, however, paler, the white stripe 

 is generally edged above, in its entire length, by an almost black line, and the dark 

 stripe above the posterior division is much more marked. 



This species can be easily recognised from the preceding by the hind divisions 

 of the stripe being more distinctly rhomboidal, the wings much less unicolorous, and 

 by its smaller size. 



I bave not yet met with tbis in Switzerland. In tbis neighbour- 

 hood it is not uncommon at Sutton Park, about 8 or 9 miles from 

 here, and may generally be taken towards the end of July. 



MYTiLELLUS, Hb. (21 — 24 mm.). 



The fore-wings of this species are darker than in any of the foregoing, the 

 ground-colour being ochre-brown, and the $ being decidedly lighter than the ^ . 

 The longitudinal stripe is shining white, divided by an oblique band of the same hue 

 as the ground-colour, the anterior division of which is wedge-shape and the posterior 

 a rhomboid, but the anal angle thereof is rounded off so as almost to make it a 

 triangle with one side curved. Beyond the central stripe, which is sometimes 

 bordered above and on each side with black, the posterior division having also a 

 small dark streak above it, there is an oblique curved white line reaching from the 

 costa almost to the inner margin. The fringe is shining ochi-e-brown, with a dark 

 dividing line. 



The hind-wings are brownish-grey, with paler fringes, divided by an indistinct 

 line. 



Head, and central part of thorax, white ; palpi brown, edged above with white ; 

 antennae and patagise cinnamon-brown ; the body is of a similar hue as the hind- 

 wings. 



This is easily known from the previous species by its darker colour, and the 

 white transverse line beyond the longitudinal stripe. 



This hardy little insect prefers pine woods to meadows, and is 

 found at a considerable elevation. "We have taken it at the end of 

 June frequently, among the pines on the Eiffelberg at Zermatt, at a 

 height of about 6000 feet. 



B. MYELLUS, Hb. (22— 2G mm.). 



The anterior-wings are yellowish-ochre, more or less shaded with red, with the 

 white longitudinal stripe reaching nearly to the hind margin, twice divided by oblique 

 bands of a reddish hue, the posterior division of which is almost linear and nearly 

 parallel with the hind border of the wing. The ground colour surrounding the 

 stripe on the anterior and outer margins is darker, being shaded with red, and above 

 the second and tliird divisions are two streaks of a still darker reddish-brown, the 



