71 



NYMPHALIDAE 



Brenthis HELENA iNGENS vaf. nov. (PI. XI, Figs 5, 6). 



In the Yellowstone Park there occurs a race of Helena disting- 

 uished by its large size from the typical Colorado form (PI. XI, Fig. 

 7) ; this latter averages 38 mm. wing expanse whilst the present form 

 exceeds 40 mm. ; on the underside the basal area of secondaries is a 

 distinct leathery brown color without any purplish shades, the basal 

 and median rows of spots show no trace of silver, being pale yellow 

 and in the latter row the spot opposite the cell is generally much less 

 prolonged distally than we usually find in the nimotypical form; the 

 spot between veins 1 and 2 shows also strong tendency to be cut com- 

 pletely in two by the black defining lines ; the marginal spots are large 

 and faintly silvered. Our type series consists of 4 5 's and 6 5 's, two 

 of the latter from Sheridan, Idaho; three of the Paratypes are in the 

 Collection of Prof. E. T. Owen of Madison, Wis. 



EUPHYDRYAS MAGDALENA Sp. nOV. (PI. XI, FigS. 1-4). 



$ Primaries black; cell with a yellow triangular spot at base, another, 

 large, quadrate in middle and three conjoined ones at the distal end, all bor- 

 dered with black and separated from each other by leathery brown spots ; beyond 

 the cell is a curved row of leathery brown spots, the costal one being narrow 

 and yellow and preceding this row on inner margin is a large quadrate yellow 

 spot; a curved subterminal row of round yellow spots, well separated from each 

 other and from the other rows by the black ground color; two terminal rows 

 of small leathery brown spots, the inner one lunulate and more or less tinged 

 with yellow. Secondaries with three postmedian rows of spots, the middle one 

 being largely yellow, the other two leathery brown; a median row of yellow 

 oblong spots considerably tinged with brown and separated from a yellow patch 

 at end of cell by a leathery brown area which at times extends upward to costa ; 

 a yellow spot near base of cell and another above anal margin ; fringes check- 

 ered. Beneath primaries leathery brown, the yellow spots in cell of upper side 

 only faintly repeated but the defining black lines distinct; two subterminal 

 rows of large pale yellow lunules separated from each other by a heavy black 

 line extend across the apical half of wing, bordered inwardly and outwardly 

 by black lines; below vein 3 they become indistinct and more or less lost in 

 the reddish brown ground color; secondaries with the usual subbasal and 

 median rows of spots which are pale yellow, heavily black-bordered and more 

 or less connected by a yellow discal patch ; a row of large submarginal lunules 

 bordered heavily with black and preceded by round spots of a leathery brown 



