REVISION OF .SriOCIKS OF TllH GENUS AGROTIS. 49 



Distiiisni.sliiMl from si(jmoi(l('s by the tlioiacic tnftiu^' wiiicli, while 

 evident, is not diseolorous, l»y the coucoloious costa, the somewhat 

 (huker s. t. space as compared with tlie rest of the wing ; the more evid- 

 ently oiitcurved t. p. line and the more yellowish secondaries. It is not 

 rare, hut scarcely a common species. The genitalia have been already 

 described. 



Eueretagrotis attenta Grt. 



l-^Tt. Grt., Can. Ent., vi. i;U, Agrotis. 



u* * * Fore wings pulverulent brown, paler over the costal region, 

 on which the incei>tion of the geminate lines are marked in dark 

 brown. There is a narrow deep brown basal ray extending to the den- 

 tate indistinct t. a. line. Disc not sullused with darker brown between 

 the ordinary spots which are moderate, pale, with fine dark annuli. 

 Orbicular sj)h('rical, complete, not pointed inferiorly as in triamjidnm. 

 T. p. line with its pale center alone perceivable, denticulated, notched 

 oi)posite the cell. The subterminal space is not differentiated by any 

 darker tint; the subterminal line is ])ale, preceded at costa by a very 

 slightly darker brown shade, not always noticeable, and not at all like 

 the determinate mark of trianf/ulum. ]\Iale hind wings almost whitish ; 

 female darker. Thorax and head like fore wings. Beneath the fore 

 wings are l)r()wn, with the exterior line indicated; hind wings with 

 brown costal region, else pale, with faint discal spot and a double 

 subterminal line marked on the costal region." 



Expands 34-30""" ; 1.3(3-1.45 inches. 



Habitat. — Canada, New York, Maine; Northern and Eastern United 

 States. 



This is most nearly Uke jterattenfa, bnt lacks the black filling in of 

 cell. The costal region is generally pale powdered, at least basally, 

 and as a rule the species is lighter in color. No male has been under 

 examination. 



Genus ABAGROTIS Smitli. 



Anterior tibiir. not spinose ; antenna; of male with joints marked, 

 laterally furnished with bristly tufts; thorax with a distinct keel-like 

 crest; front smooth ; wings rather short and broad, subecjual, very 

 much as in cupida ; palpi with second joint davate, third joint minute, 

 forming, with the frontal vestiture, a short snout. 



This genus is very distinctly characterized, and is a peculiarly inter- 

 mediate or synthetic form. In wing form, palpal structure, and general 

 habitus the resemblance to Rhi/uchagrotis is marked. Unlike that 

 genus the antennnp of the S are " brush like," very much as in Carncades. 

 From the latter the smooth front will suflice to separate it, while from 

 all other allied genera it is distinguished by the distinct, not divided, 

 anterior crest. It has a casual resemblance to GUva and allied forms, 

 but is not depressed. 



23045— Bull. 38 4 



