180 Journal New York Entomological Society. [Vol. xxi. 



smooth and somewhat rounded out, most so in palliatricula, viridi- 

 nmsca, etc., where it is also very narrow. The legs are unarmed, with 

 hairy tibiae, but without massive tufts on the tibiae; the abdomen at 

 least with a slight basal tuft, usually with several tufts, of which the 

 third and fourth are normally largest. A single tuft is not conspicu- 

 ously enlarged, and the basal one is not a fanlike mass of scales. 



The group intergrades with the Acronyctincc on the one hand and 

 with Eustrotia on the other. From Acronycta, Bryophila, etc., in the 

 last resort there seems to be no reliable separating character. In all 

 the species I have examined of Acronycta, Arsilonche, Microccclia, 

 Leuconycta, Bryophila (Bryocodia) and Polygrammate the maxillary 

 palpi are a little larger than in the Hadenas examined, projecting dis- 

 tinctly beyond the tip of the pilifer when the labial palpus is removed. 

 However, the maxillary palpus is of the same character, terminated 

 with a tuft of scales, in both, and the difference may be partly only 

 apparent. If I am not mistaken this separation will associate Leiico- 

 nycta (diphtcroidcs) and Bryophila (Icpidula and teratophora) with 

 Acronycta, separating them from Chytonix and Aniyna orbica, which 

 have the small maxillary palpi. It will be interesting to see whether 

 the caterpillars, when discovered, agree with this. 



As to the related genera, Crambodes, Oligia (Monodcs), Balsa, etc., 

 are separated by the combination of nearly scaly vestiture and lack 

 of tufting. 



From Eustrotia (Erastria) the slenderest Hadenas differ only in 

 the normal trifid venation, those species in which the venation is 

 unstable, seeming to be always over an inch in expanse, and with vesti- 

 ture at least of spatulate scales if not deeper. 



In Amolita, Senta, etc., the tongue is weak. 



Caradrina is slenderer and smaller than the Lnperinas, being one 

 to one and one half inches in expanse, and differs from the slender 

 Hadenas in the untufted abdomen. 



Perigca and Amphipyra have very glossy vestiture, palpi upturned 

 to vertex and except in the xanthioidcs group closely scaled, — besides, 

 in Amphipyra the abdomen is strongly flattened. 



Polia combines a strong hair-tuft on basal joint of antennae simu- 

 lating lashes, or true lashes in front of the antennae, with a nearly 

 untufted abdomen. 



