20 Journal New York Entomological Society, t'^'o'- xxii. 



Front somewhat tufted, male tibiae with very bristly tufting.... Cissusa. 



Front somewhat tufted, vestiture coarser, legs with massive tufts. Small 



mouths, expanding about i ^4 in Trama. 



Notes 



1. When M^Cs) of the hind wing is tubular, at least half as strong 

 as the other veins, with a distinct connection to the cubital stem, 

 and not more tlian a third as far from the cubital as from the 

 radial side of the cell the venation is " qitadrifid " ; if M, is a third 

 to half way up the cell, a mere thickening of the membrane, and the 

 discocellulars above and below are about equally strong, it is trifid. 

 Those in which the condition may be considered doubtful, especially 

 in which the vein arises about a quarter way up the cell, or M3 and 

 Cu^ (3 and 4) are decidedly stalked, are sometimes called intcr- 

 nicdiid, which implies a doubtful case, rather than any definite 

 structure. 



2. The primary differences between these three genera are in the 

 larva. 



3. liampson has divided Anarta, removing the naked-eyed species 

 to Sympistis. 



4. Tlmais, — Euthisanotia of some authors. 



5. A subarctic genus, separated by Hampson from Scotogramma, 

 for the phoca group. 



6. I should limit Morrisonia to vomerina, the only species showing 

 any structural difference from Mamesfra. 



7. Mamcstra may be divided into a number of groups, using 

 characters largely given by Hampson, but they hardly seem natural 

 or important enough to be given generic value. 



Fore tarsus with several strong claws, front more or less rough. 



Front projecting half the width of the eye (Trichoclea) artcsta. 



Front flat (Epia) capsularis. 



Fore tarsus normal. 



Front projecting half the width of the eye, rough {Scotogranniia) . .trifolii. 

 Front flat and smooth, shining when denuded. 

 Male antennae pectinate. 



Pectinations twice as long as the segments without a longer 



terminal bristle mucens. 



Pectinations and laminations fused into large triangular processes, 

 without long bristles lustralis. 



I 



