— 31 — 



C. fragilis Stretch. 



In the typical rf, the color is chocolate brown with two pale 

 transverse bands on primaries. 

 var. lutescens n. var. 



In one specimen, the light \'ellowish color of the inner trans- 

 verse band occupies the whole basal space, while the outer band 

 is broad, diffusely shaded (Ttitwardly. There is also a broad 

 yellowish median band on secondaries. In the other specimen, 

 the yellowish color is still more extensive. It covers the whole 

 fore wing except two parallel brown bands which are connected 

 by straight brown lines on the veins and a diffuse brown shade on 

 the costal region. The pale band on secondaries extends farther 

 toward outer margin and is more diffused. 



Types 2 cfcT in Mr. Dyar's collection, received from Mr. C. A. 

 Wiley, of Miles City, Montana. 

 :\ir. perlutea n. var. 



Fore wings entirely light yellowish (Ridgway's Nomenclature 

 of Colors Plate \', Fig. 13 — a little paler than the figure) no trace 

 of lines, a few brown scales before margin, forming a darker cloud, 

 but faint. Marks on the fringe obscured, but seen with, lens to 

 be nearly normal. Hind wings pale brown, a good ileal paler 

 than normal fragi/is, but same color, the broad diffuse pale band 

 present, but not contrasting on account of the paleness of wing. 

 Hody parts nearly as pale as fore wings, a little darker on thorax. 



Type I 6 in Mr. Neumoegen's collection, received from Mr. 

 1). IJruce, from Colorado. 



Family Zeuzerida. 



\'ein I a of primaries present, both wings with furcate false 

 discal veins. 



Vein 8 of secondaries united to the subcostal by a cross vein. 



cf antennae pectinated basal halt Zeuzera. 



(^ antennae pectinated to tip. 



Sexes approximate in size Trypanus. 



rf smaller than 9 and differently marked Prionoxystus. 

 Vein 8 of secondaries free from sub-costal from base. 



Vein II of primaries from discal cell , . Hypopta. 



\'ein ir of primaries from accessory cell . . Cossula. 



(lenus Trypanus Ramh. (Cossus Fah). 

 T. perplexus n. sp. 



Head, thora.x, primaries and fringes sili<y gray, the latter with black shades at 

 base ; central part of thora.x dusted with russet grains. Black collar line and 



