556 GEOLOGICAL SURVEY OF THE TERRITORIES. 



Friuge, white. Beneath, ashy-gray, with the costa of fore- wings inclined 

 to be reddish ; a dark spot on the outer quarter of the costal edge, and 

 dark diskal spots on both wings. 



Length of body, ^ , 0.70 inch ; 2 , 0.76 inch ; of fore- wing, $ , 0.70 inch; 

 9 , 0.80 inch. 



Long's Peak, June 3, W. S. Carpenter. Above timber-line, above 

 12,000 feet, mountains of Colorado, one specimen. California, H. Ed- 

 wards, No. 181, Vancouver Island, H. Edwards. 



Tijis species varies somewhat in the tint gf the wings; being, in the 

 Calilornia and Vancouver Island specimens, usually of a decided red- 

 dish. One Californian fresh example is partially tinged with reddish 

 tawny, e.^pecially on the costa and prothorax. 



The alpine specimen, collected above the timber-line, only differs from 

 the one taken on Long's Peak (which does not differ much from the Cali- 

 foruianindividuals) by being, as it were,bleached out, the portions tinged 

 with tawny and reddish being in this individual pale gray. Though the 

 specimens at first sight differ so much from those specimens of A. Jsk»- 

 dica from Iceland, received from Dr. Staudinger,yet the bleached appear- 

 ance of the alpine individual from Colorado seems to connect the two 

 races. In the Californian form, the individuals are slightly larger and 

 with strongly-ciliated autennse ; the Iceland species are in one case 

 stunted, bleached out, and with faintly-ciliated antenn£e, in the other 

 nearly as large as the Californian ^ . Still the style of markings is abso- 

 lutely the same. Staudinger also received specimens from Labrador, 

 though I collected none. This identification is of exceeding interest, 

 and forms a new link connecting the alpine fauna of the Colorado 

 Mountains, above 12,000 feet, with that of Labrador and Iceland. The 

 species has not yet occurred in Europe. 



Staudinger places this species near the European A. tritici. The Iceland 

 ^ specimens expand 1.20-1.95 inches; the alpine Colorado, 2 , 2.20iuches. 

 It may be recognized by the round discal dot directed obliquely inward, 

 sometimes running into the costal region, and by the V-shaped trans- 

 verse line, cutting across the daik streak under the median vein ; the 

 outer half lanceolate-oval, pale in the middle, with its end resting on the 

 submedian fold, and not passing beyond the outer end of the discal dot, 

 which is obliquely directed inward toward costa and base of wing, 

 instead of outward, as in A. jacuUfera and subgothica. I might state 

 that the single species placed by Staudinger in his catalogue between 

 the present one and the common very variable European A. tritici is A. 

 JSforwegica (Stgr., Stett. Ent. Zeitung, 383, 1861), with the remark added, 

 "Prsec.var. ^uno ^ condita! " Three larvae, which I refer doubtfully to this 

 species, occurred at an elevation of above 12,000 feet (Carpenter). The 

 body is smooth and cylindrical, tapering nearly alike toward both ends. 

 Body and head dark, with a median dorsal whitish interrupted line, and 

 a subdorsal similar line on each side. The whole of the dark surface is 

 finely marbled with whitish ; length, 0.75 inch. The half-grown one is 

 paler, with a reddish tinge above. The median pale line is interrupted 

 by a large black patch on each suture. 



Family Bombycidje. 



Sepialus jpulcher, Grote (Fig. 11). — This fine species occurred fre- 

 quently in the mountains of Colorado, July 19, 22, August 12, 29 ; on 

 the Pacific slope, August 29 and September 6; and on the foot-hills 

 September 8-30 (Lieutenant Carpenter). It is rather larger than the 

 typical species of the genus, and may be readily recognized by the figure. 



