SYNOPSIS OF THE GENERA. 



Fam. XIX. Pericopidae. 



Species large, often with pale dots on the head and thorax ; wings 

 ample, more or less vitreous. Mexican and West Indian. 



Wings long, rather broad, more or less semi-hyaline. Pericopus. 



Wings long, rather narrow, with semi-hyaline spots. Composia. 



Wings ample ; fore wings with a semi-hyaline baud. Eucyane. 



Fam. XX. Nyctemeridae. 



Some of the genera, like a few of the Pericopidce, have much re- 

 semblance to the Rhopalocera. The body is slender and the wings 

 ample, and they have likewise a general resemblance to some of the 

 Geometrites. They are nearly all Mexican and West Indian. 



Wings moderately broad ; fore wings straight in front, rounded at 

 the tips, oblique along exterior border ; antennae moderately pec- 

 tinated. Caralisa. 



Wings long and narrow ; antennae of minutely pectinated. Eubule. 



Wings short, somewhat triangular; antennae of $ pectinated on 



both sides. Fsycomorpha. 



Wings broad, not long, generally black with semi-hyaline 'white 

 spots. Melanchroia. 



