56 Journal New York Entomological Society, [VoL xxv. 



Lobophora but the inner margin is merely folded and heavily clothed 

 with hair, some species of the latter grading into Hydriomena. 

 Rhopalista has a heavy tuft at anal angle above and mdcv. straight 

 but long; the species seen are green and orange. Hammaptera nor- 

 mally looks quite like the central group of Hydriomena, but nor- 

 mally the discocellular is quite weak, and the apparently thickened 

 inner margin of the hind wing is distinctive. The group with nearly 

 hyaline hind wings are more nearly normal, with long bent mdcv., but 

 the thickened inner margin contrasts strongly. 



In Amygdalopteryx, as typified by dulciferata and senguera the 

 pattern is like Rhopalista, but the thickened inner margin is obliquely 

 truncate. 



Spiloctenia is Trochiodes with pectinate male antennae. {S. ocel- 

 lata, S. Am.). 



In Melitulias from Australasia, the sex-scaling instead of being 

 confined to the inner margin lies on the flat upper surface of the wing, 

 and tends to be restricted to the costal area. In all these latter gen- 

 era, beginning with the latter group of Erateina the anal is well de- 

 veloped. 



13. C. palndata and inibutata; the latter is represented by speci- 

 mens from Newfoundland in the Pearsall collection, and easily recog- 

 nized by its rose shading. Apparently each locality has its recog- 

 nizeable variety, some of which may be worthy of names; boreata 

 Pack, applies to the White Mountain form, which is dull and smooth 

 looking, with well contrasted t. a. and t. p. fasciae. 



14. O. danbyi is transitional to Epirrita in structure and markings. 



Female wingless, one ace. cell (i?ac/!^/a).. .bruceata, occidentalis, hyberborea. 

 Female wings about as long as thorax. 



Wings more heavily scaled, tongue shorter than head, normally two ace. 



cells (Paraptera) danbyi 



Wings very thinly scaled, tongue longer than head, one ace. cell (Opcroph- 

 tera) boreata, brumata (Europe). 



Hydriomena ( f) gratidata will run out here but is distinguished 

 by its normal palpi, frenulum and scaling. 



15. Practically synonymous with Cataclysme of Europe which has 

 simple antennae. Typical Zenophleps intermediate between our 

 species occur in India. Acodia of Australasia is marked much like 

 our obscurata, but the accessory cell is lost. 



