AMERICAN LEPrDOPTERA. 51 



connectiou with the dark apical patch. The front is distinctly in- 

 flated and protuberant. 



Expolita is much smaller, the secondaries and abdomen are 

 merely tinged with yellow, and the dusky shading of primaries ex- 

 tends without break from the inferior base to the apex. 'The lower 

 half of the outer margin and fringe is creamy white, making a 

 decided contrast in color. The front is flat or scarcely convex. 



In laneeolata the secondaries are white, with a narrow, smoky 

 outer border; in the female sometimes smoky throughout. The 

 species is rather large, the primaries with the lower half continu- 

 ously gray or dusky to the t. p. line. The costal region is white, 

 broken into two or three blotches by gray transverse maculation. 

 The front is convex or slightly protuberant. 



Gonella is decidedly smaller, the secondaries more dirty fuscous 

 or smoky. The primaries have the dark shading of the lower half 

 broken on the median space, so that the arrangement of the macu- 

 lation is transverse, rather than longitudinal. The front is flat or 

 only a little convex. 



Sedata has head and thorax gray, a little mottled, and the prima- 

 ries are also gray, two quadrate white costal patches representing 

 most of the light maculation. The front is protuberant, bulging 

 and rough. 



Nuicola and lucad have the thoracic disc only, gray in color. 

 Nuicola much resembles sedata in wing form, in the protuberant 

 rough front and in the general type of maculation. The base is 

 always white, however, as is the basal half of the median space at 



least. 



Lumsi is much closer to laneeolata in appearance, size and general 

 type of maculation. The costal region is unbroken white to the s. 

 t. line, indented by the dark reniform. The front is convex only. 



Biplaga, aprica, areli and erastroides have the head and some- 

 times part of the collar dark, the thorax otherwise white. They 

 are allied in a general way, yet easily distinguished. 



Biplaga is mostly gray or blackish, with two quadrate, white, cos- 

 tal patches. The base may be white in part, or, in rare cases, nearly 

 all white ; but the median space is always solidly dark except for 

 the costal patch. The front is protuberant and rough at the tip. 



Aprica is white at tlie base and to at least the middle of the 

 median space; along the costa the white shade extends to the s. t. 



TRANS. AM. ENT. SOC, XXVII. SEPTEMBEK. 1900 



