144 Journal New York Entomological Society. [Voi. xv. 



PI. LXVI of silens, with Fig. 13, PI. LXIX of tristicnia would ever 

 dream that they could possibly be meant for one species. The latter 

 figure is quite characteristic ; the former is not in the least so. 



Euxoa decolor, Morr. , with campestris Grt. , as a synonym stands 

 as a good species in Hampson's work. Both names refer to one species 

 surely enough, but it is the same species that Walker previously named 

 insulsa as I have already shown, and therefore these names must be 

 replaced where I had them in my catalogue. 



Mamestra declaraia Wlk., was referred by me to insulsa, and by 

 Hampson to tessellata. A reexamination of the type confirms my 

 original conclusion and the reference to insulsa stands. Tessellata and 

 insulsa are both variable species and run to local forms. It is quite 

 possible to mix up a box of the two. species and make them appear as 

 extreme variations of one thing : yet when one has handled hundreds 

 of examples from many localities, the two species in all their varieties 

 show a characteristic appearence that enables their recognition at a 

 glance. It is simply impossible for any student who has not become 

 familiar with this specific individuality from long experience to place 

 every example as it comes to him. And even in my own case, though 

 I have handled the species now for nearly thirty years, I sometimes 

 send back single examples without names, requesting additional mater- 

 ial before final determination. 



Agrotis perlentans Wlk. This is referred to tessellata and appar- 

 ently with justice. It is one of those species that Mr. Butler could not 

 find for me in 1891. As for the rest of the names, they stand in 

 Hampson's work as they do in my own. 



Euxoa verticalis Grt. This was first referred by me as a variety 

 of insulsa, and is correctly restored to specific rank by Hampson. 

 The range of variation while it approaches, does not include this form. 



Agrotis spectajida Smith. Hampson refers this as a synonym of 

 verticalis; but incorrectly so. There is no specimen of spectanda in 

 the British Museum and the author never actually saw my species, the 

 reference being made on the dixit of a collector who has seen both 

 species in the Neumoegen collection. 



I have reexamined the species of Chorizagrotis and am confirmed 

 in my separation of the species. Hampson makes introferens Grt., 

 and soror Smith, as synonyms of auxiliaris Grt. Soror Smith is not 

 in the British Museum collection at all, and is not a common species 

 in my experience. In auxiliaris the female is quite different from the 



