10 JOHN B. SMITH. 



All the other species are yellowish, reddish or brown, and in five 

 of them the ordinary spots are never white marked, so far as the 

 material seen indicates. 



Frigida conies from Winnipeg and is a dull, powdery, red-brown 

 form, in which all the markings are more or less obscured. The t. 

 p. line is geminate and more even than usual here, a purplish wash 

 is traceable outwardly, the median shade line is quite distinct, and 

 the reniform is indefined and blackish. 



It somewhat resembles an Orthopia in appearance and is totally 

 unlike any other of our allied forms. It is unexpectedly quite close 

 to cerussata in the sexual parts of the male, differing chiefly in the 

 longer and more slender clasper. 



Unimoda is another species which has no marked characteristics. 

 It is a large species, of the same dull, reddish luteous found in 

 senilis, and all the markings are written in a somewhat darker 

 shade of the ground color. The t. p. line is lunulate and the s t. is 

 unusually well defined. The sexual structure of the male is also 

 like that of cerussata, save that the clasper is longer, broader at 

 base and more evenly tapering to the tip. 



From this point the usual form of sexual structure is again found 

 and there is no marked departure until the last species is reached. 

 Even there the departure is not radical, because the harpes remain 

 as usual. It is odd and to me inexplicable that there should be this 

 break in the continuity of structure, separating as it does two such 

 similar species as limpida and cerussata and associating such totally 

 different forms as cerussata, frigida and unimoda. 



Angelica is quite brightly reddish brown, without contrasting 

 ornamentation, save that the outer part of the t. p. line is fasciate, 

 purplish and more even in course than usual. The reniform is 

 obscured by a smoky shade in the cell. 



< 'ataphracta is yellow in ground color and powdered with purplish. 

 The basal space is marked with irregular spots, and beyond the t. p. 

 line purplish predominates, except at the apex. The ordinary spots 

 are always outlined, but never white in the large number of exam- 

 ples seen. 



Tmpecuniosa is a small, rusty, red brown, powdery species, in 

 which the apices of the primaries are unusually acute. The median 

 shade is well marked and the s. t. space is well shaded with deeper 

 brown. 



In the remaining species the ordinary spots are always white 



