308 THE CANADIAN ENTOMOLOGISf. 



quadrate costal spot at inner fourth and below and beyond it, but separated 

 by ground-colour ; another quadrate spot, above and defining the middle 

 cluster of raised scales ; these two spots form the inner boundary of the 

 central pale fascia. At centre of costa an oblique line goes to lower 

 median vein, thence curves outwardly, then upward into apex, is broken 

 just before apex by ground-colour, and sends off two straight horizontal 

 lines into margin. The first upper half of this line forms the outer 

 definition of central fascia, the lower half of which is defined by a short 

 horizontal streak and three small dots. The costal maculation is less 

 distinct on this than the more obscurely-marked $ , and the black-brown 

 streaks of the latter are replaced by pale fuscous and yellowish-fuscous. 

 Ocellic spot in anal angle is an inverted U of pure white scales, yellow in 

 the centre and broken by a horizontal fuscous line through outer leg. 

 Subciliate line dark fuscous, cilia yellowish-fuscous. 



Described from one ^ and three $ 's bred by Mr. T. N. Willing, 

 Regina, Assa., in whose honour the species is named, and kindly forwarded 

 for determination by Dr. James Fletcher, who states that the species is 

 likely *to become of rather considerable economic importance in the North- 

 west, as the larvse are gall-makers on the twigs of Negimdo aceroides, 

 Moench. {Acer negundo, L., of Britton and Brown), the box elder. No 

 doubt a more detailed account of the work of this insect and description 

 of the larvse will be given in one of Dr. Fletcher's annual reports. The 

 labels on Mr. Willing's specimens state the moths issued July 2 to 7. 



' The genus Proteopteryx was erected by Walsingham*, with emar- 

 ginana, Wlsm., as the type of the genus. Fernaldf has recently pointed 

 out that efiiarginana has a costal fold, mention of which was omitted by 

 Walsingham, hence a costal fold in the A must be added to the characters 

 of genus Proteopteryx. 



This species Willingana agrees in venation and other characters with 

 Walsingham's original definition of the genus, but the $ has no costal 

 fold ; hence it, with some others of the species now placed under this 

 genus in our lists, will, when furthur study has been given the subject, be 

 separated from Proteopteryx. 



*Ills. Lep. Het., Br. Mus., IV., 68, 1879. 

 tCAN. Ent., XXXVI., 120, 1904. 



Mailed Sept. .^oth, 1904. 



