50 JOHN B. SMITH. 



species. It is whitish only iit base and along costa ; t. a. line a 

 l)n)\vn hand, inwardly oblique from below costa; median space 

 l)luish gray, t. p. line sinuate, a red brown curved shade beyond it 

 at the inferior half, altogether different from the other species, which 

 are white, gray, black or olivaceous, but have no red or extensive 

 l)rown shadings. 



Flaoipennis, abdomliialis and delecta have the abdomen dusky 

 and ringed with whitish or yellow ; a character easily recognized 

 and sharply distinct from the uniform white or gray of the other 

 species. 



Flavlpennis is a dark, broad-winged form, secondaries tawny, 

 with a broad black margin, primaries mostly black, with two quad- 

 rate white costal patches, the largest white square containing the 

 small, round orbicular. 



Abdomiualis is similar in wing form, but lacks all yellow in the 

 secondaries, and the primaries have much more white; in some ex- 

 amples, indeed, the basal half is white. 



The posterior thoracic tuft in both the above species is well de- 

 veloped and the front is full though hardly inflated. 



Delecta is much brighter throughout, larger and longer winged, 

 secondaries yellow, with narrow, incomplete, smoky outer band ; pri- 

 maries with smooth, glistening, somewhat metallic vestiture. A 

 broad, somewhat olivaceous bar extends from the basal third of 

 costa toward the hind angle, the space above and below this white, 

 more or less broken by darker shadings. The front is entirely flat. 



All the remainder of the species have the abdomen unicolored, 

 pale ; and among them lactlpennis stands out at once by its choco- 

 hxte colored head and thorax. The body vestiture is composed of 

 l)road, shining scales, and the posterior thoracic tuft is obvious. 

 The front is inflated and a little bulging. The })rimaries are choco- 

 late brown at base, and have a broad olivaceous band before the 

 outer margin, through which is a bluish, zigzag line. The second- 

 aries are white, with an outer smoky or blackish border, variable in 

 width, but always rather narrow. 



Major, expolita,, lanceolata and gonella have the head and collar 

 white or yellowish, the thorax else gray or brown. 



Major is a large species, in which the abdomen and secondaries 

 are distinctly yellowish. The costal region is broadly white and 

 squarely cut off' at the s. t. line. The dark shade of the lower por- 

 tion of primaries is broken at the t. p. line, and there is no complete 



