420 AnnaJs Entomological Society of America [Vol. XI, 



Sphinx gordius Cram. 

 Color very dark brown; head, thorax and appendages roughened 

 with sculpturing, mostly transverse striations; abdominal segments 

 finely punctate with wav}^ impressed lines between the punctures; 

 maxillary loop 5-6 mm. long, usually 5 mm., extending for at least 

 one-fourth the distance to the caudal margin of the wings, with deep 

 irregular, transverse striations, usually excurved and slightly bulbous at 

 tip; proximal portion of maxillae more deeply sculptured, usually a cir- 

 cular area outlined on either side the maxillary loop; antennee with 

 four or five irregular rows of tubercles which cover the entire surface, 

 those of the female extending about as far caudad as the prothoracic 

 legs, while those of the male extend half way between the distal ends of 

 the prothoracic and mesothoracic legs ; prothoracic legs slightly swollen 

 opposite the distal end of the maxillary loop; scar of caudal horn 

 slightly elevated and punctate like the remainder of the segment; 

 cremaster 3.5 mm. long, slender, the proximal part rugose, usually with 

 sharp points on the lateral margins, the distal part smooth and ending 

 in a sharp point. Length of pupa 38-42 mm., breadth 9 mm. 



Sphinx chersis Hbn. 



Color bright yellowish brown or chestnut brown, rarely with black 

 blotches; head, thorax, and appendages roughened with deep wavy 

 impressed lines, mostly transverse striations, and indistinct flattened 

 tubercles; abdominal segments thickly punctate with wavy impressed 

 lines between the punctures; lateral margins of the labrum very clearly 

 defined and the clypeo-labral suture sometimes distinct, with two 

 distinct, flattened tubercles on the clypeus adjacent to it; maxillary 

 loop 13-15 mm. long, averaging 14 mm., and usually extending half the 

 distance to the caudal margin of the wings, usually closely applied to 

 the ventral surface of the body, sometimes very slightly elevated; 

 antennas variable as to markings, but oftenest showing one row of 

 minute tubercles along the median line for at least part of the distance 

 and never having more than two rows, and never having the lateral 

 margins elevated; antennas of female extending half-way between the 

 distal ends of the prothoracic and mesothoracic legs, those of the male 

 considerably farther, often to the distal end of the mesothoracic legs or 

 beyond; sometimes a small portion of prothoracic femur exposed; 

 metathorax seldom with a median ridge, but with a prominent carinate 

 ridge on each side the meson extending at least half way across to the 

 margin of the wing, usually darker in color than the remainder of the 

 segment; scar of caudal horn smooth and polished, usually more distinct 

 than in the preceding species, with a prominent concave area just 

 caudad of it; cremaster about 2.5 mm. long, slightly longer than broad, 

 rugose and bifurcate at tip. Length of pupa 50-58 mm., greatest 

 width 13 mm. 



Some authors have reported pupse less than 50 mm. I have reared 

 a great many of these from the egg and have never had them smaller, 

 but have no doubt that the obser\^ation was correct as many factors 

 influence the size of the pupa. 



