New Bombycidae from Colorado. 



By Henry Edwards. 



Notodonta notaria, n. sp. 



Primaries mouse-color, with the nervures, three apical streaks, and a dentate, 

 marginal line, brown. At the base, from near costa to near internal margin is a clear 

 and very distinct white streak. Secondaries sordid white, with brownish dentate 

 marginal line, and a large brownish blotch at anal angle, enclosing a whitish sublimate 

 mark. Thorax concolorous with primaries. Abdomen yellowish brown at base, 

 whitish toward the tip. Antennae dull fawn-color. Underside of primaries sordid 

 white, clouded with brownish, of secondaries sordid white, margins only brownish. 



Exp. wings 50 mm. Length of body 24 mm. Colorado (D. Bruce.) 

 5 specimens $ Q- 



A very fine insect, undoubtedly belonging to the European genus, 

 and in its general aspect recalling A\ tr.em.ula, S. V., and N. torva, L. 



Janassa lignicolor, var. Coloradensis, n. var. 



This is probably a new species, but for the present I prefer to regard 

 it as a variety only. The primaries are however much less produced 

 than in/, lignicolor and the tint is grey, with little or no wood-brown 

 shade. The coloring is more diffusely disposed over the wing surface, 

 givmg an indistinctness to the markings, and there is a great difference 

 in the general appearance, difficult to define in words. The anal cloud 

 on the secondaries is decidedly smaller, while the whole insect has a 

 shorter and stouter appearance. 



Several examples. $ 9- Denver, Colorado (D. Bruce), Salt Lake 

 (Hy. Edwards). 



Icthyura Brucei, n, sp. 



Ground color of primaries sordid white, with the lines and marks, rich brown. A 

 basal and sub -basal line, the former whitish, edged with brown, and dentate in the 

 middle, the latter almost straight. Behind the middle is a broad brown shade, through 

 which from costa to internal angle runs a clear white line, which on costa is broadly 

 produced into the distinct white mark usual in the genus, between this and the 

 margin a row of Seven brown spots in the middle of which is a brownish cloud resting 

 on posterior margin, which with the fringe is brownish. Secondaries wholly mouse- 

 color. Thorax sordid white at the sides, the centre broadly brown . Abdomen dull 

 sordid while. Antennae and palpi brown, the shaft of the former whitish. Underside, 

 mouse color, with darker bent median band common to both wings, and the white 

 costal mark on primaries indicated by a pale dash. 



Exp. wings 30 mm. Length of body 12 mm. Colorado, 1 tf. 



A very characteristic and distinct species which 1 dedicate with 

 great pleasure to my good friend, Mr. David Bruce, its discoverer. It 

 differs exceedingly from any form previously known to me. 



ENTOMOl < >GIC \ \MKKK" \\.\ 3 



