March, 19 14] Forbes: Noctuid^ of North America. 25 



Male antennae strongly serrate and fasciculate. 



Serration very heavy, vestiture mostly of feathery spatulate scales, 



group subgothica. 



Serration light, vestiture loose and almost hairy., scandens, quebecensis. 

 Male antennae ciliate, simple. 



Fore wing rectangular, body heavy, habitus iiM.roa-like acclivis. 



Fore wing triangular, body light, suggesting AmoUta, etc apicalis. 



Noctua. 



Tarsi with a well developed upper row of spines, sparser than others, as in 

 Feltia, etc. 

 Wings very narrow, oblong. 



Male antennae pectinate for basal three-fourths. 



Apex acute and outer edge rounded violaris, aurulenta. 



Apex rectangular and outer edge bent in the middle.... ypsilon. 

 Wings broad, triangular, antennae nearly simple, 



(Peridroma) group as trie ta. 

 Tarsi with at most one or two spines of the upper row. 

 Palpi clavate. 



Both wings more triangular, hind wings somewhat iridescent and 

 translucent on disc. {Peridroma) groups saucia, infecta, lubricans. 

 Wings less triangular, hind wings opaque in both sexes, 



(Noctua s. str.). 

 Vestiture largely spatulate, narrower on disc, the tarsi with three 

 regular rows of spiniiles. 



Spinules of fore tibia concealed baja. 



Spinules of fore tibia evident group c-nigrum. 



Vestiture all alike, fine flattened hair, forked at tip, central row 



of spinules broken up plecta. 



Vestiture on disc of blunt hair, tending to form two longitudinal 

 ridges, on patagia of fine flattened hair, tarsi usually with 



central row of spinules simple group brunnea. 



Palpi upturned, more closely scaled. 



Vestiture of fine flattened hair, 12 spinules on each side of fore tibia, 



abdomen of female normal haruspica. 



Vestiture coarser, six spinules on each side of fore tibia, abdomen of 

 female with a thickened patch on each side, near tip., clandestina. 



Pachnobia. 



Male antennae broadly bipectinate to apex, costa arched, metatarsi with upper 

 row of spinules manifesta, monochromatea. 



Male antennae with pectinations only twice as long as width of joints, with 

 serrate apex, costa slightly concave ; with upper row of spinules, 



salicarum, okakensis, littoralis. 



