438 Annals Entomological Society of America [Vol. XI, 



should hesitate to use were it not for the fact that the figure in 

 Smith and Abbott's " Lepidopterous Insects of Georgia" shows 

 the same characteristic. 



a. Head bent forward ventrally, the proximal part of the maxilla considerable 

 swollen so that the ventral margin of the body as seen in lateral view is 

 prominently excurved at the cephalic end P. gaura 



aa. Head never bent forward ventrally, the proximal part of maxilla only slightly 

 swollen and the ventral margin of the body as seen in lateral view is prac- 

 tically straight P. juanila 



So far as it is possible to observe from a single specimen, the 

 only differences in the two species are listed above. It is 

 therefore necessary to give but the description of P. jiianita. 

 The specimen of P. gaurce Strecker examined was 28 mm. in 

 length and the greatest width was 6 mm. 



Proserpinus juanita Stkr. 



Color chestnut brown sparsely dotted with black; surface of head 

 and thorax with very shallow impressed lines, fainter on the appendages, 

 appearing polished, abdominal segments punctate, 2-7 more densely 

 punctate along the cephalic margin and over nearly the cephalic half of 

 the segment, 8-10 over the entire segment; mandibular areas each with 

 a distinct tubercle, prominent in ventral view; maxillce slightly swollen 

 near the proximal end; antennse vary in length somewhat though this 

 is not a sexual difference apparently, in some they extend as far caudad 

 as the prothoracic legs, in others half way between the prothoracic and 

 mesothoracic legs; portion of prothoracic femtir exposed about 2 mm. 

 long, less than .5 mm. broad; metathoracic ridge black, often wrinkled; 

 scar of caudal horn often a distinct tubercle, at other times scarcely 

 apparent; cremaster 2-3 mm. long, often slightly bifurcate. Length 

 of pupa 27-33 mm., greatest width 6-7 mm. 



Subfamily CHiEROCAMPiN^. 



The only common American genera belonging here are 

 Xylophanes and Celerio. They have a number of spiracular 

 furrows, separated by wavy interrupted ridges. They are long, 

 slender pupae with the wings extending for about three-fifths 

 the length of the body. The prothoracic femur is exposed in 

 Celerio. The antennae vary but little in the sexes, and only in 

 length. The maxillae extend to the caudal margin of the wings 

 and are sometimes excurved at the proximal end. The eye- 

 pieces are very much like those of the Acheron tiinse and usually 

 do not extend nearly to the maxillae. 



