112 LEPIDOPTERA OP NORTH AMERICA. 



wings light brown, aud with larger yellow spots than on the other 

 side ; hind wings light brown, with two large irregular bright yel- 

 low spots, connected in the middle, and covering nearly the whole 

 surface. 



Massachusetts. Expands nearly an inch. 



GONILOBA WESTWOOD. 



HARRIS MSS. 



Head occasionally clothed with red hairs ; labial palpi as seen 

 from above, forming two short square projections in front of the 

 face. Antennae with a long and slender club, the terminal half of 

 which is reflexed, forming a slender hook, acute at the tip. Pri- 

 maries long, triangular, generally marked on the disk with semi- 

 pellucid spots. Apical margin entire, slightly convex towards the 

 apex ; discoidal cell long and narrow. Secondaries large, sub- 

 triangular ; outer angle rounded, outer margin slightly scalloped, 

 spotted with black. Anal angle produced into a short tail turned 

 outwards or into an obtuse point. Upper disk of the wings often 

 unspotted, but the base is yellowish or metallic-colored. Lower 

 disk often varied with silvery patches. 



1. G. tityrus F. Figured in Boisd. et Lee. pi. 72. Sm. Abb. I, pi. 19. 



Wings brown ; primaries with a transverse semi-transparent band 

 across the middle, and a few spots towards the tip, of a honey yel- 

 low color ; secondaries, with a short, round obtuse tail on the anal 

 angle. 



Under side of primaries similar to that above ', that of the secon- 

 daries has a broad silvery band, edged with black. Margin of all 

 the wings below a little paler, with the nerves black. Fringe 

 yellow and brown. 



Larva, which feeds on Robinia, "is pale green, transversely 

 streaked with dark green, with a red neck, a very large head 

 roughened with minute tubercles, slightly indented or furrowed 

 above, and of a dull red color, with a large yellow spot on each 

 side of the mouth." 



United States Expands two and a half inches. 



HARRIS. 



