1918] PupcB of Common SphingidcB 413 



Protoparce sexta J oh an. (Fig. 3). 

 Color chestnut brown; head, thorax and appendages with very 

 shallow impressed lines, appearing smooth and polished on most of the 

 surface, abdomen punctate, the annulets fairly distinct on all segments; 

 metathorax with a prominent rounded ridge on each side the meson, 

 usuall}^ darker than the remaind'Cr of the segment; maxillary loop 

 averages 17 mm. in length and extends about half the distance to the 

 caudal margin of the wings; antennae extend considerably beyond the 

 distal ends of the prothoracic legs, sometimes almost to the meso thoracic 

 pair; spiracular furrows seldom extending ventrad of the spiracles; 

 scar of caudal horn usually elevated and smooth; cremaster 1.5-2.5 mm. 

 long, bifurcate at tip. Length of pupa 45-60 mm., greatest breadth 

 10-12 mm. 



Protoparce quinquemaculatus Haw. 

 This species differs from the preceding only in the characters given 

 in the key. 



Genus Chlaenogramma vSm. 

 A single species of this genus is found in eastern North 

 America. It is characterized by the very short maxillary loop, 

 which averages 3 mm., and by two very long spiracular furrows. 

 The body is typically sphingiform, with the labrum visible on 

 the ventral surface. The maxillary loop extends for about one- 

 sixth the length of the maxilla, and is closely applied to its 

 surface. A distinct swelling is always visible on each protho- 

 racic tibia and a small portion of the femur is always exposed. 

 The spiracular furrows are about equal in transverse length, or 

 the inner one is longer. The body is quite strongly sculptured 

 on the head and thorax and less strongly on the appendages, 

 while the abdomen is distinctly punctate with traces of annulets 

 on the dorsal surface. The cremaster is triangular, somewhat 

 longer than broad, deeply rugose and occasionally bifid at tip. 

 The only species is apparently not common and very little has 

 been published regarding its life history. 



Chlaenogramma jasminearum Bdv. 

 Color chestnut brown; labrum with an indistinct tubercle in each 

 ventral angle; mandibular area slightly elevated and very rugose; 

 maxillary loop deeply transversely striate, slightly bulbous at distal 

 end, never over 5 mm. in length, usuall}^ less; antennas trans\'ersely 

 striate with indications of tubercles along the lateral margins, extending 

 farther caudad than the prothoracic legs; mesothoracic spiracles with 

 slightly elevated black margins; abdominal segments usually showing 

 four indistinct dorsal annulets; scar of caudal horn very small, usually 

 smooth, on an elevated transverse ridge in the middle of the segment; 

 cremaster about 3 mm. long, or less, strongly rugose and usually almost 

 black; length of pupa, 45-48 mm., greatest width 10 mm. 



