31 



A. ORC Strecker. (PI. V. fig. 7 ; PI. VI, figs. 6 and 7.) 



Cossus ore Strecker, Proc. Acad. Nat. Sci., Phil., p. 282 (1893); Neumoegen & 

 Dyar, Jour. N. Y. Ent. Soc, II, p. 162 (1894). 



"Male. Light grayish. .Antennae pectinated. Head and thorax heavily 

 clothed with coarse, dark brown and whitish scales ; abdomen with grayish hair, 

 beneath somewhat paler. Primaries. Ground color light gray but more or less 

 suffused with brownish especially on the basal two-thirds. The whole wing is 

 striated, mottled might almost be the better term, with fine intersecting lines of 

 various thickness which connect and interlace producing a curious and notable 

 effect; there is a sort of submarginal jagged band (but scarcely deserving to 

 be so-called) formed by the lines there being heavier; there is also conspicuous 

 mottling interior to the middle of the wing produced by the same cause. The 

 mottling, for it is more mottled than striated, is unlike that of any other species 

 I know of whether native or foreign and will readily and strikingly distinguish 

 this form from all others. Secondaries gray, reticulated with fine lines, but 

 with little of the tendency to semi-transparency that is shown in some other 

 species. 



Expands two and one quarter inches. The female is like the male but 

 broader winged and expanding three inches. The antennae but very slightly 

 pectinated. This is a true Cossus nearer to the European lignil^erda which it 

 more resembles, except in the style of mottling of the wings, than any species 

 occurring in this country. 



Hab., State of Washington ; captured by Prof. O. B. Johnson, from whom 

 I received it." 



We have examined the types in the Strecker collection and possess 

 several S S from Arrow Head Lake, B. C, which agree very closely 

 with the type S ; also i S from Colorado. The species differs from 

 undosiis Lint, (brucci Frch,) in that the collar is concolorous with the 

 thorax, and that the striations do not unite to form such prominent 

 black bands across middle and outer fourth of wing. Our specimens 

 nearly all show considerable traces of black suffusion in the central 

 area of wing, a feature not so marked in the type specimens. The 

 fact that we possess a S from Colorado, practically identical with our 



B. C. specimens, leads us rather to suspect that this may be a good 

 species and not identical with brucei Frch. occuring as it does in the 

 type locality of this latter species. 



Early stages unknown. 



In Coll. Barnes, 6 S S from Arrowhead Lake, B. C, Colorado 

 (Bruce). 



