NO. 1649. yORTH AMERICAN CRAMBID MOTHS— KEARFOTT. 373 



ANALYTICAL KEY TO SPECIES OF MESOLIA. 



3. Fore wing with whitish or yellowish uiarli on niitldle of costa. 



inccrtella Zinck. 



r 



This character absent 2 



2. Ground color fore wing principally white oruculella Kearfott. 



Ground color principally ochreous gray 3 



3. Dentations of inner line of fore wing acutely pointed. 



h uaehiicaella Kearfott. 

 Points of these dentations rounded or obtuse bahoquivaricUa Kearfott. 



MESOLIA ORACULELLA, new species. 



Expanse, male, 20-24 mm ; female, 27-30 mm. 



Head with conical process in front, light brown in front, darker 

 brown around and between bases of antennae, these shades separated 

 b}' a cream white transverse line; labial palpi cream white, heavil}^ 

 overlaid externally, in male with grayish-brown, more lightly in 

 female; maxillary palpi cream white, apical joint shaded with light 

 broAvn: antennae, male flattened and broadened, female simple, gray- 

 ish cinereous ; thorax, collar and patagia cream white, former shaded 

 with light brown dorsally and latter at base, centrally the thorax is 

 bronzy gray ; abdomen dark cream or pale coffee color, posterior 

 edges of first three segments ochreous ; legs cream white, tarsi banded 

 with light brown. 



Fore wing, a broad median white streak and the costa edged with 

 white, beginning at inner third and broadening outwardly ; elsewhere 

 the ground color is light grayish brown. The inner line begins on 

 costa between middle and outer third as an outwardly oblique brown 

 dash on the white ground color; below this are two superimposed 

 horizontal dashes of darker brown, their outer ends connected by an 

 ochreous brown curved line; the lower dash is in the middle of the 

 Avhite median streak; beyond middle of wing on vein I'' is a dark 

 brown streak with a short upper limb beneath the white median band 

 and a longer lower limb following I'' to tornus; between this dorsal 

 mark and the spots in middle of wing the inner line is obsolete. 

 The subterminal line is an oblique brown line from outer fifth of 

 costa to U23per third of wing, thence to tornus, slightly outwardly 

 concave, it is edged outwardly with a white line of equal width; 

 beyond the color is light brown, cut on upper third by a fine Avhite 

 line which nearly reaches termen below apex ; on the lower two-thirds 

 is a large white oblong spot, containing no black dots or dashes. 

 Before the cilia is a fine brown, terminal line. Above the incision 

 the cilia is white, divided by a broad brown line and edged outwardly 

 with brownish gray ; in the incision are a few long white scales with- 

 out any brown markings; below incision cilia is white, shading out- 

 wardly into grayish brown. The lines from costa on upper third of 

 wing are all parallel to each other. The white shade between the 



