Sept., 1908.] K.EARFOTT : ToRTRICID.E AND TlNEINA. 171 



Nos. 628 and 2,610 ; Denver, Colo., June 22, Clear Creek, Colo., July 

 16-23; Bear Creek, Morrison, Colo., August 23, Oslar ; Pecos, New 

 Mexico, August 25, at light, Cockerell. 



Cotypes, Cat. No. 11,934 U.S.N.M. and my collection. 



I have long had this species in my collection under E. matutina 

 Grote and have doubtless so named it for correspondents ; but a care- 

 ful reading of Grote's most imperfect description, in which even the 

 expanse is omitted, and examination of his figure, as well as examina- 

 tion of a specimen determined by Dr. Fernald, who was acquainted 

 with Grote's type, before his collection was sold to the British Mu- 

 seum, convinces me that this large, showy species is distinct. The 

 brown of the marking of matutina is much paler and more of a fawn 

 shade, but the easiest marks of separation are the brown spots on 

 antennas bases of grotiana which are entirely wanting in matutina .• in 

 matutina on the white space between apex and fascia is a darker lance- 

 like shade that connects with the latter, but this latter may occur on 

 very dark specimens of grotiana, hence is hardly a good character. 

 My conception of the expanse of matutina is 12-16 mm., much 

 smaller in average size than grotiana. 



Eucosma costastrigulana, new species. 



Expanse $ and o, 17-18 mm. 



Head light ochreous brown ; palpi whitish ochreous, rather loosely scaled above 

 and below on second joint, tuft flattened, triangular ; apical joint darker, very short, 

 obtuse, almost hidden ; antenna $ very finely ciliate, gray ; thorax light ochreous 

 brown, patagia and posterior end mottled with white ; abdomen bleached straw or 

 same shade as palpi and hindwings ; legs pale ochreous, anterior pair shaded in front 

 with blackish brown, and all tarsi ringed with same color. 



Forerving. — Light ochreous brown or yellowish ochreous, shaded with darker 

 brown on costal edge ; this brown edging is interrupted from base to apex by white 

 dashes or strigulations, these also cover the $ costal fold ; there are four pairs before 

 the middle and four pairs beyond the middle, the latter are more sharply defined than 

 the former, the outer dash of each pair is usually longer than the inner, the first pair 

 beyond middle sends a scattered line of white scales to inner bar of ocellus and a few 

 leaden scales continue from the second and the apical pair. In the apex is a rounded 

 white spot, its outer half resting on the cilia, it contains a few dark brown dots ; a 

 similar whitish ciliate spot is just above tornus opposite ocellus. Before the ocellus 

 the wing is more or less speckled with white. Ocellus is well-defined, with two or 

 three rather long horizontal black lines, vertical bars are shining whitish with a small 

 dot of same color below, in tornus ; before the inner bar are a few scattered black 

 scales. Cilia, inner half whitish gray, finely atomized with black, and interrupted 

 above tornus and in apex as stated, outer half shining pale ochreous. Underside 

 grayish fuscous, with costal spots repeated. 



Venation typical of Eucosma. 



