24,0 [March. 1S83. 



CONCHELLUS, Schiff. (26 mm.). 



Fore-wings reddish- or cinnamon-brown, yellowish by the inner margin, with a 

 shining white longitudinal sti'ipe, once obliquely divided with red-brown. The 

 ground colour is in some specimens slightly darker along the anterior and hind 

 margins of the stripe, forming a darkish curved transverse shading nearer the pos- 

 terior border, which is edged by a distinct dark line. The stripe is shining white, 

 and nearly reaches to the hind margin of the wing, it is divided about the middle 

 by a reddish-brown band ; the anterior division is narrowly wedge-shaped, the pos- 

 terior an ovate I'homb, which sometimes is a distinct rhomboid, and at others the 

 angles are so rounded off as to leave an ovate spot, at the anal angle of this division 

 there is a distinct tooth. The fringes are white with dark intersections, aud having 

 a dark dividing line. 



The hind-wings are light brownish-grey, with a very fine dark marginal line ; 

 fringes white, divided by a dark line. 



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

 white ; antennse brown ; patagise reddish-ochre ; and the body is of the same colour 

 as the hind-wings. 



During the last week o£ June, 1880, my friend Dr. Jordan and I 

 found this insect common at Zermatt, flyiug about the meadows on 

 the Riffelberg, and last year it was very abundant in meadows near 

 the Chalets not far from the Findelin Glacier. 



The a. ab. rhombellus of Zeller has the posterior division of the white stripe of 

 a distinct rhomboid. 



PINELLUS, Linn. (20—23 mm.). 



This is the only one of Div. A. found in England, and is accordingly well 

 known. The ground hue of the fore-wings varies much in its intensity, from a pale 

 yellow rust-colour to bright yellowish-cinnamon. As in the former species, there is 

 a longitudinal white stripe, once divided by an oblique band, but the anterior wedge- 

 shaped portion is much broader proportionately, and the hinder part more distinctly 

 rhomboidal, its anterior margin being nearly parallel with the anterior margin of the 

 wing, while in conchellus it slopes distinctly downwards. The wedge-shape part of 

 the stripe is, at its termination, rather nearer the fore edge than the rhomboidal 

 division, over which it appears to rise. The rhomb is bordered on the anterior and 

 hind margins by a more or less distinct dai'k line, and its hind and basal margins are 

 somewhat parallel, sloping from above downwards towards the base of the wing, bufc 

 the anterior and inner sides somewhat diverge, owing to the posterior outline of the 

 rhomb being much longer than that by the division. The ground colour of the wing 

 is more or less distinctly shaded with dai-ker brown, which is marked in the deeper 

 outline of the hind division of the stripe, above the anterior margin of which there 

 is a dark streak, and beyond it is a curved dark line, sometimes followed by a lighter 

 one, reaching to the anal angle of the rhomboidal division which it borders. The 

 hind margin is edged by a dark dotted line. The fringes are reddish, slightly in- 

 tersected with dark patches, and having a dark dividing line. 



