V 



'^m!""'] PROCEEDINGS OF THE NATIt)NAL MUSEUM. 215 



The reinaiuing species of the {^roiip have the median space coucolor- 

 oiis or uot darker than the rest of the wing. 



Prodeaiformis resembles in winj^ form and thoracic structure quite 

 strongly the preceding two species, but is obviously distinct. The 

 median lines are incomplete, a pale streak surmounts the claviform, and 

 a broail pale shade runs though the s. t. space. The orbicular is nar- 

 row and oblique. Tliis i)eculiar species somewhat resembles Mr. 

 Grote's ligure ol^ Adinetocis o.vyinorus, and intleed the description indi- 

 cates that he had a male of this s[)ecies associated with the female type 

 which was ligured. 



Atlantica and despcrata are red- brown species, broad- winged and 

 with a less oblique outer margin. In atlantica the Hues are incomplete, 

 but the maculatioa is clear cut, the colors bright. 



In desperata everything is vague except a short black basal dash. 

 The median lines are complete but not distinct; the groundcolor is 

 overlaid by a whitish film, leaving all vague ami <lull. 



Canadensis in wing form is like subjuncta, but lacks the connecting 

 bhick dash between the median lines. The genitalia are MkQ atlantica, 

 whicli in general the species also resembles in maculation, save that 

 the median lines are distinct. 



Subjuncfa ami grandis are distinct in having elongate wings, in which 

 the hind angles are somewhat retracted. A distincc black transverse 

 line connects the median lines and additionally distinguishes the 

 species. 



Inter se, subjuncta is evenly brown in color, while (jrandis has a broad 

 bluish white shade through subterminal space and is also larger. 



Nevadce seem to belong here, or perhaps nearer to canadensis ; but 

 I have not seen a specimen. 



Differing from all the preceding by sordid, dark, powdery ashen gray 

 color, is invalida, in which the wings are trigonate, with well-marked 

 apices, distinct median lines, and a narrow black line through the me- 

 dian space connecting them. 



Trifolii'has much the wing form of the preceding, but the wings are 

 dirty luteous in color, the lines distinct. This is the only one of the 

 W-marked series in which the color is yellowish, and it is therefore 

 readily distinguished. 



In synoptic form the scheme would be as follows: 



Median space darker, transverse lines complete. 

 An oblicjuo pale streak along the course of vein 2, through the median space. 



Violet-brown; s. t. space not paler farnhami. 



Median and terminal space fuscous brown, else l)luish white, maculate with 



brown liiiuiila. 



No such pale streak. 



Orbicular larjie, round, white; t. a. line uiniylit; t. p. line incurved below rcui- 



forni capsnhiris. 



Orb cular small, dark centered; median lines oblique, regularly narrowing the 

 median space inferiorly liilula. 



