March, 1914] Forbes: Noctuid.e of North America. 13 



126. Anterior tuft of thorax high, truncate at tip, often lying back along the 



thorax, the true posterior tuft slight or wanting 127. 



Anterior tuft not much higher than posterior, or pyramidal 129. 



127. Trifidae ; palpi extending barely to vertex, male antennae simple in our 



species 128. 



Venation intermediid ; palpi extending far above vertex ; male an- 

 tennae pectinate Hypsoropha, 



128. Vestiture very fine and wooly, largely of hair Papaipema (51). 



Vestiture mainly of imbricated spatulate scales Ogdoconta (52). 



129. Vestiture of simple scales; palpi if upturned reaching vertex, if porrect 



the second joint fairly long, front smooth and fairly fiat 130. 



Vestiture of simple scales, front rough and strongly rounded out, hardly 



exceeded by the palpi 131. 



Vestiture of spatulate scales or deeper 132. 



130. Typical trifid a few species of Hadena. 



M, fairly strong and tubular, M., sometimes stalked ; Idcv. decidedly 



stronger than mdcv. and meeting it at an angle, 



Lithacodia (Etistrotia) (53). 



131. Tuft on one middle abdominal segment very strong Chamyris. 



Abdominal tufts moderate, and the two largest, at least, subequal, 



Tarache (54). 



132. Front strongly rounded out and rough, vestiture of short spatulate 



scales 133. 



Front smooth, and not strongly projecting unless perfectly smooth and 

 shining 134. 



133. Tufts on one middle abdominal segment very strong Chamyris. 



Tufts on third and fourth segments of abdomen practically equal, a fan- 

 shaped basal tuft on abdomen Bryocodia (55). 



134. Eyes decidedly narrower than front 135- 



Eyes as wide as front or wider 136. 



135. Vestiture almost scaly, eyes naked, wings stumpy, 



Eustrotia ? inchidens (56), 

 Vestiture of rough hair, eyes strongly lashed, wings long, body stout, 



Per alia (57). 



136. Palpi with straight blade-like second joint, projecting for more than the 



length of the head beyond it. Hypenini 175. 



Palpi shorter or not beak-like i37- 



137- Quadrifid ; fore wing more than twice as long as wide, female frenulum 

 with at most two bristles, tympanic opening covered by a peculiar 

 flap of scales, base of abdomen with a transverse ridge of scales, 



Marasmalus. 



Normal trifid, or if M, is low and fairly strong in hind wing, with much 



broader hind wings ; tympanic opening rarely closed by a scale-flap, 



female frenulum triple 138. 



138. Fore wing with marked subfalcate apex and even outer margin (58) 139. 

 Fore wing with blunt apex and more or less wavy outer margin .... 142. 



