Sept., igio.] Smith: North American Agroperina. 139 



evenly to the tip. The uncus is dilated before the tip and that fea- 

 ture is characteristic in the series. The chitinous penis-sheath has 

 two saw-tooth processes near the tip and is quite characteristic in 

 form. No other species referred here agrees closely with this form 

 which is also the largest of the series. 



Hampson makes safiua Strck., a synonym of this species, and that 

 agrees with my own note which refers to the type as an undersized, 

 rubbed lateritia. Strecker's specimen is from Anticosta, and I have 

 from Grand Lake, Newfoundland, two male examples which are, I 

 believe, referable to Strecker's species. The male genitalia differ 

 only in minor details and satina is probably no more than an under- 

 sized variation. 



Cogitafa Smith is similar in color, a little more purplish as a rule; 

 but the primaries are decidedly shorter, broader and the apex less pro- 

 duced. The vestiture of the thorax is rather more scale-like and the 

 tuftings are better marked, especially the posterior dorsal tuft, while 

 the dorsal tuftings of the abdomen tend to become complete. There 

 is little more maculation than before, but there is a tendency to com- 

 pletely outline the reniform in white, and there is a central white 

 mark or lunule which often fuses with the other mark, leaving a white 

 blotch with or without a central brown line. The median lines may 

 be altogether lost, indicated by pale powderings, or by venular dots 

 only. There is nearly always a fairly obvious pale s.t. line and 

 usually also a pale line at the base of the fringes. 



The male antenUcC are very similar to those of lateritia. The 

 genitalia of the male offer several characteristic differences. The 

 uncus is very slender and not dilated before the tip ; the ladle-shaped 

 tip of harpes is much smaller and the patch of spinules at the angle 

 is very much reduced. The clasper, on the other hand, is much 

 stouter and very decidedly longer. The penis-sheath is of quite dif- 

 ferent form and, instead of two saw-teeth, there is a single small 

 spinule. Two dissimilar examples from Kaslo, B. C, and Sierra 

 Nevada, California, showed absolutely no material differences in 

 structure. The distribution of this species is very similar to that of 

 lateritia and the dates of flight are also about the same. 



Of this species also I have specimens, two males and four females, 

 from Grand Lake, Newfoundland, in August, and they also are under- 

 sized and somewhat thinly scaled, bearing" the same relation to norn:aI 



