1899.] 



129 



margin is broader, and the cubital branches longer, than in the allied species. Pos- 

 terior-wings without markings, save that the dorsal mai'gin is sometimes faintly 

 greyish towards the base, and the pterostigmatic region somewhat yellowish. 



In the (J the appendages are simple, consisting of a pair of much elongated 

 curved valves, obtuse at the apex, convex externally, and concave internally (or 

 above), the opposing apices touching ; internally, before the apex, towards the lower 

 edge, are rows of minute blackish teeth. 



Likely to be confounded with large examples of the next species 

 by the colours, but with structural characters distinct from any other. 

 Apparently wide-spread over Europe, but less common than the two 

 succeeding species ; the exact distribution and degrees of frequency 

 must be worked out by local observation. 



It probably occurs in N. America. A $ insect in my collection 

 from Mt. Washington, New Hampshire, appears to agree in all respects, 

 but it is necessary to see the (^ . 



H. LUTESCEKS, Fab. (1793), Steph., Hagen. 

 ajffinis and paqanus^ Steph. 

 humuli, E/Ostock, Reuter?. 



Pale primrose-yellow ; a blackish stripe on each side of the thorax much nar- 

 rower than the pale band enclosed thereby, often visible on the sides of the head 

 above ; antennae yellowish, not appreciably annulated : abdomen usually remaining 

 yellowish in the dry insect, 

 and with a dorso-lateral row 

 of dark spots on either side ; 

 sometimes changing to fus- 

 cous, especially in the ? : 

 legs pale, the tips of the 

 tarsal joints faintly annu- 

 lated. Anterior-wings broad 

 oval, the apex obtuse, costal 

 area narrow, not abruptly 

 broader at the base ; the 

 sub-basal black point con- 

 spicuous (in the ^ it is often 

 the only very evident mark- 

 ing), and there is usually a series of brownish-grey clouds along the dorsal margin 

 extending into the membrane, the blackish gradate nervules clouded with greyish ; 

 the neuration marked with short dark lines, but not conspicuously, and the points 

 at the origin of the sectors of the radius are small ; the lowest nervule in the inner 

 gradate series as a rule placed more towards the apex than the one above it. Pos- 

 terior-wings usually without appreciable markings. 



In the <? the appendages are yellow, not furcate : viewed laterally they appear 

 thick and elongate, dilated at base and apex, the upper edge nearly straight, the 

 lower much excised before the greatly widened apex, which is almost truncate, the 



