202 THE CANADIAN ENTOMOLOGIST. 



A NEW BUTTERFLY OF THE GENUS INCISALIA. 



BV JOHN H. COOK, ALBANY, N. Y., AND FRANK E. WATSON, NEW YORK CITY. 



Incisalia polios* (new species). 

 Type $ : Abdomen and thorax brown above, the former ashen 

 beneath ; antennae dark brown, ringed with white, the cUib tipped with 

 rufous, the basal third white beneath ; eyes narrowly edged with white. 

 Upper surface of wings dark brown (as in the congeneric species), with 

 a Httle red-brown near the anal angle ; fringes white, the long scales 

 tipped with brown, interrupted with brown at the end of each nervule ; 

 next to the fringe two fine, parallel brown lines, between which is a lighter 

 line interrupted by the nervules, and within which is a continuous, distinct 

 white line. Secondaries somewhat produced at tips of nervules, but not 

 tailed. Stigma present. Under surface of primaries warmer brown, with 

 an irregular extramesial white stripe from the costa to the first median 

 nervule, edged inwardly with dark brown; about midway between this and 

 the outer margin a series o( five small, distinct, dark brown, nearly circular 

 spots, not more than one in any interspace; outer half of area between 

 these ipots and the margifi, hoary. Two obscure dark lines crossing the 

 cell. Under surface of secondaries : Basal half nearLy uniform pitch 

 brown, limited exteriorly by a fine broken white line (next to and within 

 which the colour is deepest), obscurely variegated with lighter shades ; 

 outer half of wing with an arcuate series of eight rich chestnut-brown dots 

 paralleling the outer margin, one to each interspace, except between the 

 first and second median nervules, where there are two, the outer roughly 

 crescentic, with tips toward the inner, which is smaller and round, the 

 space between them lighter brown. Basal area with greatest projection 

 between the second and third median nervules. Beyond the spots the 

 wing is ashengray as far as the inner of the two fine marginal lines, which 

 are much as on the upper surface, except that near the outer angle the 

 gray is present only near the margin. The same ashen colour fills the 

 space between the dark basal area and tiie series of spots, from the third 

 median nervule to the inner margin. At the end of each nervule this 

 hoary border is indented by a small black triangle. Expanse, 29 mm. 



Type 9 : Outer margins of all wings more strongly rounded than in 

 ^ ; white parts of margin and fringe above less distinct, especially on 



*-ii\\<'.<; — hoTry. 



June, igo7 



