30 



scattered that on the face of it it would appear at least very probably 

 that we were dealing with separate species or at least good geograph- 

 ical races. 



A. UNDOSus Lintner. (PI. V, fig. 8; PI. VII, fig. 2.) 



Cossus undosus Lintner, Rep. N. Y. State Mus., XXX, p. 243 (1878) ; Neumoe- 

 gen & Dyar, Jour. X. Y. Ent. Soc. 11, p. 161 (1894); Holland, Moth 

 Book, p. 377, PI. XLI, fig. 9 (1903). 

 Tryl>anus nodosus (!) Kirby, Cat. Lep. Hat., I, p. 861 (1892). 

 Cossus brucci French, Can. Ent., XXII, p. 44 (1890) ; Neumoegen & Dyar, Jour. 



N. Y. Ent. Soc, II, 161 (1894). 

 Trypanus brucei Kirby, Cat. Lep. Het., I, 861 (1892). 



"Both pair of wings in their ground color are white, and are crossed by 

 numerous, narrow, black, transverse lines. Of these the most prominent one 

 crosses the outer third of the cell, with an outward inflection from the costa 

 to the subcostal nervure. an inward inflection in the cell to the first median 

 nervule which it follows for a short distance, and thence proceeds in a double 

 curve to the internal margin, .^nothe^ black line, less heavily marked, runs ir- 

 regularly from the costa to the internal margin, passing over the middle of 

 the cell. Between the stronger transverse lines are fainter ones, which some- 

 times reticulate with the former. The thorax, abdomen, basal and internal por- 

 tion of the hind wings, are thickly clothed with pale gray hairs or elongated 

 scales; the remaining portion of the hind wings (the portion preserved in the 

 example) is as thickly scaled as the primaries, and nearly as distinctly lined ; be- 

 neath they are stronger lined than above. Palpi barely extending beyond the 

 eyes, clothed with white scales interspersed with narrow black ones. Thorax 

 beneath, with long gray hairs. Legs similarly clothed, with their tibiae and 

 tarsi banded with black. 



Length of body, with extruded ovipositor, 1.50 inch. Expanse of wings, 

 entire, unknown; from one discal cross-vein to the opposite, 1.85 inch." 



The type specimen, of which we give a figure, is in a very poor 

 state of preservation ; the figure in Holland's Moth Book, as far as we 

 can judge, gives a good representation of the species. In the type and 

 all specimens seen by us the collar is distinctly ochreous and the thorax 

 gray; the black bands, while varying somewhat in their course, seem 

 to be always present. Dyar appears to be correct in placing C. brucei 

 Frch. in the synonomy. 



Early stages probably in poplar. 



Hab., Colorado, Wyoming. 



In Coll. Barnes, 2 $ S Colorado (Bruce). In Coll. Strecker 4 

 S,i 9. 



