Vol. XXIV] ENTOMOLOGICAL NEWS 25! 



Colorado female in the Henry Edwards' collection, and have 

 a series in my own from Stockton, Provo and Eureka, Utah, 

 from which latter locality I have flora, crocca and singula also. 



Flava has a short black basal streak which caeca lacks. In 

 flava the t. p. line is not always angulated in submedian fold 

 as stated in Hampson's tables, but is often curved merely. The 

 line in caeca, however, is much more even, as is also the ter- 

 minal line, and the s. t. space is wider. Both have a fine black 

 streak in s. m. fold, joining the t. a. and t. p. lines, and caeca 

 is best characterized by having a pale ochreous streak imme- 

 diately above this, which is the palest mark on the fore wing. 

 The whole of the upper portion of the median space in caeca 

 is tinged with ochreous. In flora it is reddish brown. In flava 

 the geminate t. p. line is whitish filled, the white broadening 

 out into a patch at the angle or bend in the s. m. fold. In 

 caeca the filling is concolorous with the rest of the s. m. space, 

 though there is a creamy white patch in the s. m. fold. The 

 black band on secondaries of caeca is more even on its inner 

 edge. Both wings beneath are much paler in caeca than in 

 flai'a; in fact my Utah caeca have no yellow tinge beneath the 

 primaries at all. Both have a conspicuous black discal spot be- 

 neath secondaries, and the discal spot beneath primaries re- 

 ferred to by Smith as present in dupla but absent from 

 "flora" (caeca meant), is sometimes present in both. Caeca 

 has shorter wings and blunter apices. 



Crocea has proportionately broader wings than either, and 

 is a much grayer species, without any distinct reddish or ochre- 

 ous shades. A short discal streak seems variably present or 

 absent. The t. p. and s. t. lines are more as in flora than 

 caeca. The discoidal spots are distinctly outlined in grey, 

 which is not the case with the other two species, at least in my 

 series. Hampson says of caeca (under crocea}, "orbicular 

 and reniform .... with whitish annuli," but this is not shown 

 in the figure. There is no blackish streak in submedian fold 

 centrally in crocca, but there is a pale grey or creamy white 

 patch across the median space just below the discoidals, and 

 this sometimes extends upwards to obliterate the lower edges 



