DESCRIPTION OF THE SPECIES. 231 



to the basis of the second basal cell ; 2. Of a crossband parallel 

 to the first, abbreviated behind, which begins at the stigma, near 

 the anterior margin, and runs across the basis of the submarginal 

 cell, as well as across the crossveins, which close the second and 

 third basal cells, and thus reaches the sixth longitudinal vein ; 3. 

 Of a rivulet which begins above the posterior crossvein, near the 

 third longitudinal vein, runs from it across the posterior cross- 

 vein as far as the posterior margin, is continued along this mar- 

 gin inside of the third posterior cell, but, before reaching the sixth 

 longitudinal vein, is suddenly turned upwards, running parallel 

 to the band which begins at the stigma, crossing the small cross- 

 vein, and thus reaching the anterior margin, where, gradually 

 expanding, it forms a border ending a little beyond the tip of the 

 fourth crossvein. The two crossbands, as well as the rivulet, are 

 of moderate breadth only ; the latter has, in the described speci- 

 men, the following faded spots, which, in more fully colored spe- 

 cimens, are probably less apparent or altogether absent: 1. A 

 rounded spot in the marginal cell, above the origin of the rivulet; 

 2. Upon the longitudinal axis of the submarginal cell an indenta- 

 tion in the inner margin of the section bordering the apex of the 

 wing; 3. Upon the longitudinal axis of the first posterior cell 

 an interruption of the rivulet at its origin and an indentation in 

 the inner margin of the portion bordering the apex of the wing; 



4. Upon the longitudinal axis of the discal cell a narrow interrup- 

 tion of the section, running again towards the anterior margin ; 



5. The spot upon the posterior margin connects the first, descend- 

 ing, portion, with the second, which rises again upwards. The 

 first and third longitudinal veins are bristly; the third and fourth 

 are parallel towards their end, both very gently curved back- 

 wards ; the section of the fourth vein preceding the discal cell is 

 gently, but rather distinctly arcuated backwards, so that the shape 

 of the discal cell somewhat reminds of that of the species of 

 Rivellia; the crossveins are comparatively rather long, moderately 

 approximated, their distance being about equal to the length of 

 the posterior crossvein ; the latter is rather steep, however, per- 

 ceptibly approximated to the apex with its anterior end, more 

 than with the posterior ; the posterior corner of the anal cell is 

 very much drawn out in a point. 



Hab. Canada (Mr. Provancher). [Norway, Maine; S. J. Smith 

 — seems to be a common species in those regions. 0. S.] 



