115 



of each segment; projection on the head blunt at the end 



and directed ventrad Plusiodonta Gruenee. 



dd. Distinct cremaster present, its caudo-lateral angles produced 



and pointed, with two hooked setae inserted on the ventral 



side of each ; body not punctate, slightly rugose ; projection 



on the head narrowed to a rounded point. .Anomis Hiibner. 



bb. Cephalic end of body smooth, cremastral hooks slightly curved. 



Acronycta Treitschke. 

 The following species were examined : 

 Acronycta americana Harris, popnli Riley, clarescens Guenee, hama- 



melis Guenee 

 Bulonche oblinita Smith and Abbot 

 Achatodes zeae Harris 

 Homopyralis discalis Grote 

 Plusiodonta compressipalpis Guenee 

 Anomis erosa Hiibner 



Subfamily Phytometrinae 



The members of this subfamily differ markedly from those of 

 the other subfamilies of Noctuidae. The labrum is never in its nor- 

 mal position but is located near the cephalic end of the body, while 

 the wings and maxillae extend beyond the caudal margin of the fourth 

 abdominal segment. The wings are produced into a sharp point near 

 the meson of the ventral surface. The labial palpi are always visi- 

 ble and a large portion of the prothoracic femur is exposed. The 

 dorsal cephalic margin of the movable abdominal segments has a 

 number of prominent furrows with slightly serrate ridges between. 

 The prothorax is not as long as in the previously mentioned sub- 

 families, being only two fifths the length of the mesothorax, and the 

 caudo-lateral angles are somewhat produced. The dorsal surface of 

 the body shows prominent grooves along the caudal margin of the 

 metathorax and the first four abdominal segments. The edges of 

 these grooves are somewhat serrate. The cremaster is somewhat 

 cylindrical and rugose, with two long hooked setae and four shorter 

 ones. The two genera studied are very closely related and may be 

 separated as follows : 



a. Antenna reaching the caudo-lateral angle of the mesothoracic leg; 

 cremaster with length and breadth approximately equal and longer 



than its longest setae PJiylometra Haworth. 



aa. Antenna much shorter than the mesothoracic leg and never reach- 

 ing its caudo-lateral angle ; cremaster always longer than broad 

 and about equal in length to its longest setae. 



Syngraplia Hiibner. 



