LEPIDOPTERA HETEROCERA. 41 



sixth very deeply bent outward near its hind end ; seventh slightly 

 undulating, abbreviated near the interior angle, where there is a 

 black dot and a black streak ; space beyond the seventh line mostly 

 dark brown ; a blackish cinereous stripe along the interior border, 

 attenuated towards the interior angle ; exterior border slightly den- 

 tate. Hind wings bright rosy towards the base; a short broad 

 blackish streak contiguous to the interior angle and nearly parallel 

 to the exterior border ; fringe partly pale cinereous. Length of the 

 body 21 Hues ; of the wings 44 lines. 



a. Amoy, China. From Mr. Stevens' collection. 



Smerinthus amboiniens. 



amboiniens, Feld. Sitz. Akad. Wiss. xliii. 29. 

 Amboina. 



Genus CERATOMIA. 



Ceratomia. repentinus. 



repentinus, Clms. Journ. Acad. Nat, Set. Philad. iv. 180. 

 United States. 



Genus CYPA. 



Fcem. Corpus crassum, dense pilosum. Proboscis nulla. 

 Antennae extrorsum crassiores. Abdomen longi-conicum, thorace 

 non duplo lon^ius. Pedes breves, robusti; tibiae posticae calcaribus 

 duobus apicalibus brevissimis. Ala? anticae acutae, subfalcatae, mar- 

 gine exteriore subundulato, margine exteriore apice excavato. 



Female. Body very stout. Head and thorax densely pilose. 

 Head very short, closely auchylosed with the thorax. Proboscis 

 obsolete. Palpi very short, closely applied to the head. Antennae 

 smooth, slightly increasing in breadth from the base to the tips, 

 which are acute and falcate. Abdomen elongate-conical, acute, less 

 than twice the length of the thorax. Legs short, stout ; femora 

 pilose ; hind tibiae with two extremely short apical spurs. Fore 

 wings acute, slightly falcate ; exterior border slightly undulating ; 

 interior border deeply excavated at its tip. Hind wings entire. 



E 3 



