LEPIDOPTERA HETEROCERA. 3 



Species generally of moderate size. Body most frequently 

 stout. Palpi more or less apparent ; third joint never very long, 

 nor enlarged towards the tip. Thorax more or less pilose. Wings 

 of moderate breadth, or narrow. Hind wings less ample than the 

 fore wings ; first inferior vein, when apparent, less developed than 

 the others, and inserted in the middle of the areolet near the discal 

 fold. 



Subdiv. 1. 

 Palpi breves, validi. Pedes non longi. 

 Palpi short, stout. Legs not long. 

 Trifidae Bombyciformes, Guenee. 



Subdiv. 2. 

 Palpi validi, bene determinate Pedes robusti. 

 Palpi stout, well-developed. Legs robust. 

 Trifidae Genuinae, Guenee, 



Subdiv. 3. 

 Corpus gracile. Pedes longi, graciles. Alae latae. 

 Body slender. Legs long, slender. Wings broad. 

 Trifidae Minores, Guenee. 



Subdiv. 1. 



A. Alarum posticarum venae costalis et subcostalis basi disjunctae. 



Fam. 1. Cvmatophorim, Herr.-Schceff. 



B. Alarum posticarum venae costalis et subcostalis basi conjunctae, 



aut basim versus connexae. 



A. Palpi bene determinati. - Fam. 2. Bryophilid^e, Guen. 



B. Palpi breves. - Fam. 3. Bombycoid^e, Guen. 



Fam. 1. CYMATOPHORIDJS. 



Corpus gracile, aut vix robustum. Proboscis raediocriter 

 longa. Palpi plus minusve pilosi, breviusculi aut caput paullo 

 superantes. Antennae simplices, saepe subserratae. Abdomen alas 

 posticas non aut perpaullo superans. Pedes graciles aut subvalidi ; 



b2 



