1886.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM 425 



because of the larval diflferences. All my Columbia are smaller than any 

 gloveri I have ever seen, but all my Columbia are from Maine, where the 

 species has undergone its greatest changes. The description of gloveri 

 will be sufficient for this species also, and the larval differences will be 

 more fully pointed out there. 



A. gloveri Strk., Lep. Ehop. et Het. 1, p. 1, pi. 1, fig. 1 <J , 2 9 , Jau'y, 1872— yPlatysamia)t 

 id., p. 128, pi. 14, fig. 8,aberr. ; larva, Strk., Pr. Dav. Ac. Sci., ii, 276, 1878; 

 Graef., Bkln. Bull., 1, 75 (cocoon). 



Deep carmine or crimson brown, varying, however, in depth of color. 

 Primaries with a broad outwardly curved white band, shaded on each 

 side with black, near base ; a similar broad white band, inwardly black 

 margined, extends straight, or but little sinuate, across the outer third 

 of wing. In the space included between these bands, at the end of the 

 discal cell, is a lunate white spot margined with black, varying very 

 greatly in size and form and sometimes almost obsolete. Beyond the 

 outer band the wing is dull luteous gray to the fine black submarginal 

 line, and beyond that the margin is still paler. For more than half its 

 width this pale space is densely powdered with black scales, and in the 

 interspaces outwardly are a series of large black spots of variable size 

 and distinctness, sometimes obsolete. Crowning this series is a large 

 round, deep black, apical spot with a blue crescent, from which a zig- 

 zag white line runs to an apical black mark. Within this line is the 

 usual large, irregular, pale lilac patch. The outer narrow black line is 

 very irregular and very variable, occasionally with but a single deep 

 indentation, and again with a deep sinus in each interspace. One 

 difference may be here noted between this species and Columbia in the 

 course of the outer transverse line — in this species it is straight or 

 merely sinuate ; in Columbia it is outwardly curved and does not so accu- 

 rately meet the corresponding line on the secondaries. The secondaries 

 have the extreme base white, outwardly margined with black ; at the 

 end of the cell is a lunate white patch variable in size and shape, but 

 always larger than that of the primaries. The space between the outer 

 white band and the margin is very similar in color to that of the pri- 

 maries; but there is an interrupted blackish band and a series of long 

 spots within the tine dark sub-terminal line. Beneath, the maculation 

 is a slightly fainter reproduction of the upper side, with the basal white 

 band wanting. The primaries have 10 veins, the origin of 9 somewhat 

 obscure, and apparently independent of but contiguous to 8, not far 

 from its inception. The form of the genitalia is well given in the 

 figures of plate xiv. 



Exi)auds 4.J, 5 inches. Rab. — Utah and Arizona. 



Mr. Strecker describes the larva of this species in vol. ii, j). 277, of the 

 Pr. Davenport Ac. X. Sci., and thus states the differences between it 

 and allied forms: 



" I would briefly state the difference between the larva of this and the 

 three allied species, Columbia S. I. Smith, cecropia L, and ceanothi 

 Behr., which consists principally in the dorsal tubercles. 



