10 



Genus XLV. PHALyENA. 



GENERIC CHARACTER. 



Antenna setaceous, decreasing in size from the 

 base towards the point. Wings when at rest, 

 in general deflected. Flight nocturnal. 



o O 



General Observations. 



The number of species of which this genus 

 consists, has induced Linnaeus to divide it into 

 the following families : 



1 . Attaci. With wings inclining downwards 

 and spreading open. These have either 



a. Pectinated antennas, without a tongue. 



/3. and a spiral tongue, or 



y . Setaceous antennae, with a spiral tongue. 



2. Bombyces. With wings incumbent, and an- 

 tennae pectinated. 



A. Elingues, which want the spiral tongue, 

 a. With reversed wings. 



/3. With deflexed wings. 



B. Spirilingues. With a spiral tongue. 

 a. With smooth backs. 



/3, With crested, or tufted, backs. 



