8 Journal Xew York Entomological Society, t^'o'- xxii. 



Palpi upturned to middle of front or porrect 56. 



56. Vestiture deeply overlaid with plain or forked hair 57. 



Vestiture flattened or mixed 58. 



57. Tongue weak, shorter than thorax; wings broad and thin, with even 



outer margin, resembling Pteroscia, metatarsi with three rows of 



spinules Cho'ephora (28). 



Tongue normal, wings smaller and heavy, metatarsi often with four rows 

 of spinules Pachnobia (Episilia) (21). 



58. Spinulation of fore tibia strong, or if weak and concealed in the vesti- 



ture (baja), with strongly flattened body Noctua (21). 



Spinulation concealed in vestiture, body rather slender and cylindrical, 

 wings broad, with arched costa ; largely arctic, 



Eurois group Aplectoides (21). 



59. Abdomen strongly tufted, eyes more or less lashed 60. 



Abdomen untufted 61. 



60. Thorax with fine feathery spatulate vestiture, wings normal, our species 



light gray Anytus. 



Vestiture of flattened hair, wings more lanceolate, our species black, 



Fishia. 



61. Spines of tarsus regular, eyes not lashed Eurois (21). • 



Eyes distinctly lashed 62. 



62. Vestiture mixed, largely spatulate Apharetra. 



Vestitvire of rough hair, spinules of tarsus distinctly in four well spaced 



rows, but all four rows are ventral Ufeus. 



63. Fore wing zvithout accessory cell 64. 



Accessory cell present, rarely reduced or stalked, and still more rarely 



open at tip, leaving Ro stalked with Rj and R4 with R^ 79. 



64. M, of hind wing wholly absent (legs normal) 65. 



Normal trifidie with M, very weak, though tubular, and from a third to 



two fifths way up the cell ; legs normal ; Sc and R of hind wing fused 



to middle of cell 67. 



M; as strong as most veins, from a quarter way up the cell ; front smooth, 

 palpi long, male with legs often modified 69. 



65. Front rough and prominent with strongly projecting clypeus. palpi rather 



short, hardly reaching middle of front when upturned, fore wings 

 rather narrow, R^ free, from cell, Sc and R of hind wings with long 



fusion 66. 



Front smooth, palpi upturned beyond vertex, with long third joint, wings 

 broad Cohubatha (Tripudia) quadrifera. * 



66. Yellow and fuscous, markings simple Heliocontia (29). 



Yellow, red and black, markings complex Spragueia. 



67. Front rough and strongly projecting, the palpi barely extending beyond it, 



Tarachc group Tarachidia (aberrant specimens). 

 Front smooth, the palpi if upturned reaching vertex 68. 



68. Palpi upturned to vertex, close-scaled, the third joint upturned, front 



with large smooth imbricate scaling Menopsimus (30). 



