152 BULLETIN UNIVERSITY OF MONTANA. 



Butterfly Expanse, 1.2 inches, 30 mm. The club of the antennae 

 lacks the terminal hook. The upper surface of both fore and hind wings 

 is dark brown; the costal margin of the fore wings to near the apex is 

 dull yellow; the fore wings of the male lack the brand. On the under 

 side the fore wings are black, edged on the costa and outer margin for a 

 short distance below the apex with light fulvous. The veins and nervules 

 of the hind wings are white, standing forth conspicuously upon the darker 

 ground color. 



Early Stages Unknown. 



Distribution It occurs in Illinois, Iowa, Nebraska, Dakota, and Mon- 

 tana. In the state it has been collected by Coubeaux near Big Sandy, 

 1904; by Cooley at Bozeman, July 18, 19ul, and by Wiley at Miles Citv 

 (7), three July 4, 18y2, two June 2, 1893, and two June 17, 1899. 



THE GARITA SKIPPER, Oarisma garita, Reakirt, may be expected 

 in Montana. It is light fulvous on the upper side, with the costa of the 

 hind wing somewhat broadly marked with leaden grap; on the under side 

 the fore wings are brighter fulvous, with the inner margin lined with 

 dark gray. The hind wings are paler fulvous, inclining to gray, with 

 the inner margin brignt fulvous. Expanse, .75 to 1.00 inch, 19 to 25 mm. 

 Genus ERYNNIS, Schrank. 



Butterfly The antennae are short, less than half the length of the 

 costa; the club is robust, with a terminal crook. There is a discal 

 stigma on the fore wings of the male. The egg is somewhate spherical. 

 The caterpillar feeds upon grasses. The chrysalis is elongated and 

 cylindrical. 



Fig. 112. Venation of Erynnis. 



THE UNKAS SKIPPER, erynnis unkas, Edwards. Figs. 113, 114. 

 Butterfly Expanse, 1.35 to 1.6 inches, 34 to 40 mm. 

 Female Upper surface fuscous, the base and posterior part of the 

 fore wings, and a broad band through the hind wings from the base out, 

 washed with dusky fulvous. The fore wings have a sub-terminal broken 

 row of spots, all whitish but the last, which is yellowish, also a small 

 spot at the end of the cell; the two between the branches of the median 



