14 



Genitalia: almost identical with parvipuncta, except in the shape and size 

 of the valves, and the fact that the chitenized flap is quite different in shape, as 

 shown by the figure. 



Apparently these two species are very closely allied, and probably one is 

 of recent development from the other or they have originated from a common 

 ancestor within a comparatively recent date. 



This species is represented in the Barnes Collection from Jemez 

 Springs and Fort Wingate, N. Mex. ; White Mts., and Paradise. 

 Cochise Co., Ariz. 



Type locality: New Mexico. 



Types in: Neumoegen and Snow Collections. 



Grotella parvipuncta, B. & McD. (fig. 5). 



1912, B. & McD., Can. Ent., XLIV, 19, Grotella. 1912, B. & McD., Cont. 

 Nat. Hist. Lep. N. A., I, # 4, 11, pi. IV, f. 19, ("Type 9"), Grotella. 



Front and legs essentially as in septempunctata, the claw on the fore tibia 

 somewhat heavier. 



Head, collar, thorax and ground color of the primaries creamy-white, not 

 with the satiny chalk-white of dis. Spots seldom plain, usually vestigial ; when 

 present, spaced as in blanca. Secondaries : dusky. Beneath : primaries, fuscous ; 

 secondaries, creamy-white with some slight amount of fuscous along costal and 

 outer margins. 



Expanse: 23-24 mm. 



This species is represented in the Barnes Collection from Jemez 

 Springs, N. Mex. ; and Mohave, and Plane Mine, Bill Williams River, 

 Yuma Co., Ariz., besides the types. 



The "type $" has the secondaries somewhat paler than the remainder of 

 the type series, but we believe this is due to. being a rather worn specimen. Our 

 idea of a typical specimen of the species is representd by the figure of the 

 "Type 9" in the "Contributions." We prefer not to designate either the male 

 or female "Type" as the lectotype until sufficient specimens have come to hand 

 to prove, beyond doubt, that they are conspecific. The "T3T)e $" lacks the 

 body, so we cannot examine its genitalia. 



Genitalia: similar to blanca and dis, but differing in the size and shape 

 of the valve and the auxiliary flap-like structure on the basal third of the valve. 



Type localities and number and sexes of types: "Type $ ", Fort Wingate, 

 N. Mex., July 24-31; "Type 9", Fort Wingate, N. Mex., July 1-7; "Cotype(s)" 

 (Paratypes), 1 ^,1 9, Deming, N. Mex., Sept. 1-7. 



Grotella stretchi, sp. nov. (fig. 7). 



Front as in G. septempunctata. Fore tibia with long curved claw on inner 

 side and about three small spines above; one curved claw-like spine on outer 



