50 BULLETIN 190, UNITED STATES NATIONAL MUSEUM 



from sanbonii m the more opaque forewings and the very narrow bands on 

 the abdominal segments 3 and 5, which are not present in sanbonii. The 

 females differ in the broader margin of the hindwing with irregular exten- 

 sion inwardly about halfway to the cell. 



Records of sanborni in the United States National Museum : Two males 

 and one female, dunes at Waukegan, 111., August 27, 1933, bred from roots 

 of Lacinaria scariosa (A. K. Wyatt and Engelhardt) ; one male, East Chi- 

 cago, Ind., September 6, 1920 (W. J. Gerhard) ; one female. Beach Sta- 

 tion, Lake County, 111., August 15, 1930 (B. Benish) ; male and female, 

 Aweme, Manitoba, male, August 20, 1910, female, July 20, 1910 (N. Crid- 

 dle) ; one male, Colorado Springs, Colo., bred from roots of Lacinaria punc- 

 tata (Engelhardt) ; one female, Dickinson County, Iowa, August 1915 

 (H. M. Clark) ; one female. Lake Okoboji, Dickinson County, Iowa, June 

 23,1922 (R. A. Leusler). 



CARMENTA HELENIS. new species 



Plate 20, Figure 112 



Alale. — Antennae ferruginous-black. Labial palpi pale yellow, black 

 on the sides and at tips. Head metallic black. Collar black above, whitish 

 beneath. Thorax black with bluish luster, metathorax transversely edged 

 with pale yellow, a small pale-yellow patch beneath wing base. Abdomen 

 shiny black, segment 4 narrowly banded with pale yellow or whitish, 

 segments 2, 6, and 7 with bands faintly indicated ; abdomen beneath pale 

 yellow on posterior half; anal tuft broad at base, bluntly pointed at tip, 

 black above, pale yellow in center beneath. Legs pale yellow or white, 

 posterior tibiae violaceous on upper and outer surfaces, black and white 

 mixed inwardly and beneath ; tarsi glossy whitish. Forewing transparent, 

 costa and veins purplish black, outer margin broadened by golden-yellow 

 rays between the veins ; discal mark prominent, square, black intermixed 

 with yellow, fringes brownish black. Hindwing transparent, margins 

 narrow, black-violaceous ; beneath a heavy yellow shading on costa and 

 margins, discal mark black and orange. 



Female. — Similar to male. Antennae rusty black, touched with white 

 on apical half. Abdominal segments 2, 4, and 6 with narrow white bands, 

 only band 4 encircling the body. Outer and inner transparent areas on 

 forewing smaller than in male. 



Expanse: Male and female, 16 to 18 mm. 



Distribution. — Prairies of Saskatchewan, Manitoba, and British 

 Columbia. 



Type. —IJ.S.N.M. No. 56828, male. Collected at Earl Grey, Sas- 

 katchewan. Also allotype female, one male paratype, and one female para- 

 type. In the United States National Museum. 



Remarks. — This species, most confusing in its resemblance to Carmenta 

 ithacae, is represented by insufficient examples but must be recognized as 



