1884.] NATURAL SCIENCES OF PHILADELPHIA. 285 



Primaries, upper surface white with a dark steel-gray band 

 crossing the wing about one-third from base, this band is chevron- 

 shaped, narrowest in the middle and widening to double its width 

 towards the costal and interior margins ; in some examples di- 

 vided entirely in the middle. Interior to this band is a transverse 

 row of four dots of same color, and a single dot on costal nervure 

 near the shoulder. Between the outer and median space of wing 

 are three irregular broken gray lines, the outermost of which on 

 the costal half joined by a broad wedge-shaped gray mark. A 

 dark discal dot and dark point at termination of nervules. 



Secondaries white, dark discal mark and dai'k dot at end of 

 each nervule. 



Under surface white, with markings of upper side more or less 

 faintly reproduced, and the addition of a gray transverse line 

 across the middle of secondaries. 



Described from examples taken, in summer of 1883, by Mr. 

 David Bruce, in mountains of Colorado. 



This species comes nearest to the European Bicusjns Bkh., in 

 the latter the dark band and marks are much heavier and more 

 decided, but their arrangement is nearly the same. 



Mr. Bruce took, this last season, also in Colorado, examples of 

 Ginerea Wlk., which do not differ from those taken in Pennsyl- 

 vania, New Jerse}^ and New York. 



Lophopteryx elegans. 



$. Form of Garmelita^ which appears to be its nearest ?i\\y. 

 Expands 2 inches. Head fawn-color ; thorax above slate-gray, 

 abdomen fawn, shading into brown towards the thorax, beneath 

 whitish. 



Primaries chocolate-brown, darkest towards base and along the 

 costa, and shading into ashen along the exterior margin, a streak 

 or line of pure silvery white along submedian nervule, starting at 

 base and extending one-third the length of the inner margin ; the 

 narrow space between this line and inner margin paler brown, 

 inclining to ochre. Two short, dark, subapical longitudinal lines ; 

 exterior margin with a fine dark lino. 



Secondaries white, with dark anal patch cut with a fine white 

 line, as in other species. 



Under surface. Primaries hoary gray, with brownish on costa 

 and broad indistinct submarginal shade of same color parallel 



