SYNOPSIS OF THE GENERA. 



Fore wings denticulated ; 



With silvery streaks and angulated. Calliomma pars. 



Without silvery streaks, not angulated. Smerinthus. 



Fam. X. Drepaiiulidae. 



Body slender ; proboscis inconspicuous, palpi very short, antennae 

 longer than the thorax, feet slender, naked ; wings wide, primaries 

 falcate ; antennae of the males moderately pectinated of the female 

 scarcely longer. Drepana. 



Fam. XI. Saturnidae. 



Antennae ^Btiform, bipectinate in the male ; no sternmata ; se- 

 condaries wide, fringe short, without a frenulum ; body thick, densely 

 pilose. 



Antennae of males bipectinate, females unidentate. Saturnia. 



Antennae of both sexes strongly pectinate ; wings with vitreous, 



diaphanous spots. Attacus. 



Antennae of the male deeply pectinated to much beyond half the 



length, minutely serrated from thence to the tips of the female, 



simple. Dryocampa. 



Antennae of the male merely serrated for more than one-third ; of 



the female, simple. Ceratocampa. 



Fam. XII. Bombycidae. 



Antennae in both sexes pectinated, strongly in the males ; body 

 robust, pilose ; wings strong ; cocoons of the larvse silky, hence called 

 spinners. 



A. Limb of the wings denticulate ; 



A. Antennae very short. 



a. Body thick. Gastropacha. 



B. Limb of the wings not denticulate ; 



A. Antennae of the male equally pectinate. 

 f Primaries with veins not punctate. 

 o Primaries with no pale discal spot ; subacuminate at 



the apex. Clisiocampa. 



Primaries rounded at the apex. Pimela. 



ft Primaries, veins punctate. Artace. 



Fam. XIII. Notodontidae. 



Body usually robust, pilose, extending beyond the wings ; anten- 

 nae of the male usually pectinate, rarely simple of the female, 

 simple, rarely pectinate ; wings entire, often long. 



