116 



The following species were examined : 

 Phytometra brassicae Riley 

 Syngrapha falcigera Kirby 



Subfamily Mominae 



The only genus studied in this group was Charadra. This re- 

 sembles the Arctiidae very much more than it does most Noctuidae 

 in the shape of the body, in the presence of setae arranged around 

 the scars of larval verrucae, and in the absence of epicranial suture 

 and visible labial palpi and femora of the prothoracic legs. The an- 

 tennae are broader at the proximal end than is typical in Noctuidae. 

 The appendages are arranged more as they are in Noctuidae and 

 there is a cremaster present, as long as the ninth and tenth abdom- 

 inal segments, which bears hooked setae. The only known Arctiidae 

 which have long cremasters are provided with flanged plates on the 

 movable abdominal segments and the cremastral setae are never 

 hooked. The prothoracic leg extends cephalad between the sculptured 

 eye-piece and the antenna, but the mesothoracic leg never reaches 

 the eye-pieces. The body is slightly punctate along the cephalic mar- 

 gin of the movable abdominal segments. The pupae are found in 

 thin silken cocoons, which differ from those of the species of 

 Arctiidae in that none of the larval hairs are used in their construc- 

 tion. 



The following species was the only one examined : 

 Charadra deridens Guenee. 



Subfamily Hypeninae 



The only genus available for study of this group as given in 

 Dyar's list was Plathypena, but as Balsa possesses the pupal charac- 

 ters which distinguish this from other subfamilies, it is included in 

 the Hypeninae for the present. These characters are the presence 

 of two long and six short hooked setae at the caudal end of the body 

 and the fact that the prothoracic legs and the long point of the meso- 

 thoracic legs extend cephalad to the eye-piece, or, as in Balsa, to the 

 maxillary palpus, which is always present in this genus. Plathypena 

 shows the epicranial suture, but it is not found in Balsa. Both genera 

 have the spiracles slightly produced, and in Plathypena they are on 

 small elevations. The labial palpi are present in both, but the femora 

 of the prothoracic legs are visible only in Balsa. The genera may be 

 separated as follows : 



