116 TORTRICINA. 



D. Anterior wings with the apical margin 

 truncate. 



d. Palpi with the middle joint not three 



times as long as the apical .... 6. DICTYOFTERYX, pars. 

 dd. Palpi with the middle joint more 



than five times as long as the apical . 7. CRCESIA. 



E. Anterior wings with the apex obtuse, 

 and the apical margin rounded. 



e. Palpi with the middle joint scarcely 



four times as long as the apical . . .8. HEMEROSIA. 



Genus I. HEDYA, HUB. 



Palpi as long as the head ; robust, porrected upwards, remote ; 

 clothed at the apex with fine scales. Basal joint stout, drooping, 

 pyriform, truncate ; apical minute, slender, obovate, shorter than 

 the basal ; middle not so stout as the basal, curved, ascending, five 

 times as long as the apical. Maxillas longer than the palpi. Thorax 

 robust, ovate. Anterior wings : the length equals nearly three 

 times the breadth (in H. pauperana more than three times) ; costa 

 regularly arcuated ; apex slightly produced ; apical margin concave ; 

 dorsal margin rounded. The discoidal cell proceeds two-thirds across 

 the wing, and receives from the subcostal vein a nervure, inserted 

 between the first and second subcostal nervures (nearer the latter), 

 which crosses the discoidal cell to the second apical nervure ; sub- 

 costal nervures remote. Posterior wings : apex acute ; apical margin 

 concave ; the median vein is furcate midway between the insertion 

 of the super-median nervure and the margin. Abdomen slender, 

 and tufted at the apex in the 3 ; stout and obtuse in the $ . 



The insects associated under this name are mostly of very 

 common occurrence, of moderate size (rather below the average), 

 and distinguished by their white or whitish anterior wings, with 

 defined dark markings ; the most conspicuous of these latter is 

 a patch at the base, which may be traced throughout nearly the 

 whole of them. In the structure of the anterior wings the apex 

 is slightly produced, thus approaching the Anchylopera. The 

 larvae are attached to the Elm, Poplar, Sallow, Willow, &c. 



The British species amount to ten in number, and are ar- 

 ranged as in the following table : 



A. Anterior wings without a dark-coloured patch at 



the base . . Species 1 



B. Anterior wings with a dark-coloured patch at the 

 base, its posterior edge straight, rounded or very 



slightly angulated Species 2-8 



