146 LEPIDOPTERA OF NORTH AMERICA. 



Deilephila. — Tongue as long, or nearly as long, as body ; abdomen atten- 

 uated at tip. 



tX Abdomen tufted at the tip. 

 Sesia. — Wings hyaline in the middle. 

 Macroglossa. — Wings opaque ; tongue as long as the body. 



II*. Terminal margin wavy between nervules. 

 Anceryx. — Tongue as long as the body ; head broad and conical, eyes 

 large ; wings narrow. 

 M. Antaeus. — Tongue nearly twice as long as the body. 

 S. Juglandis 9 • — Tongue nearly obsolete. 



III.* Terminal margin nearly straight or slightly sinuate. 

 Anceri/x Caicus. — Body rather long and slender, wings narrow, 

 f Antennae with a long hook tapering to the end, ciliferous in % , simple in J . 

 iX Abdomen thick and large ; wings deeply concave on inner border. 

 Tongue two-thirds as long as the body. 

 Pachylia. — Interior angle of hind wings, covered with white scales ; head 

 broad, eyes large. 

 Tongue as long as the hodij. 

 Philampelus. 



ft Antennse somewhat fusiform, rather short, hook minute. 



X Abdomen oblanceolate, body long and slender. 

 Tongue as long as the body. 

 Anterior wings narrow, tip very acute, often somewhat hooked. 

 Chserocampa. — Head large, conical ; eyes moderate ; abdomen with a slen- 

 der pencil of hairs. 

 IV.* Terminal margin excavated by the tip, convex from the middle. 

 X Abdomen without apical tuft. 

 Ambulyx. — Wings narrow and very long ; head prominent, conical, ob- 

 tuse ; tongue long. 

 Tongue not quite as long as the body, or as long. 

 Pergesa. — Antennse filiform, longer than thorax ; body oblanceolate ; wings 



slightly denticulated. 

 Chserocampa {in part). 



Tongue nearly obsolete. 

 S. Juglandis % . — Antennae subpectinated. 

 Tongue about one-half as long as the body. 

 Darapsa. — Head subtufted, front nearly vertical, eyes small ; antennae 

 with a long hook. 



XX Abdomen with apical tuft. 

 Fore wings with silvery streaks. 

 Calliomma, Group II. — Head prominent, conical ; antennae minutely ser- 

 rate setose. 



B. Anterior wings not entire. 



I.* Terminal margin angulated, denticulated, excised or indented. 



lo Fore wings with angular indentations above interior angle. 



X Abdomen with apical tuft. 



