BUTTERFLIES OF MONTANA. 



45 



Egg — The eg,^3 are ovate, conical, broadly flattened at the base and 

 slightly truncated at the top. 



Caterpillar — On emerging from the chrysalis, the head is not larger 

 than the body. The body has a few scattered hairs on each segment. 

 On reaching maturity the head is small, the body large. 



Chrysalis — It is relatively short and thiCA, rounded, wth verv few 

 projections. 



Key to Genera. 

 Palpi remote, not extending much beyond the head; discal cell of 

 hind wings closed; a black spot on vein of hind wings of male. Anosia 



Genus ANOSIA, Hubner. 

 Butterfly — Large seized, tore wings greatly produced at the apex. 

 Egg — The egg is ovate conical, ribbed with many cross-lines. The 

 eggs are pale green in color. 



Caterpillar — Cylindrical, fleshy, transversely wrinkled, with long, 

 slender filaments. 



Key to Species. 



Color fulvous: veins black plexippus 



THE MONARCH BUTTERFLY, Anosia plexippus L., Fig. 39. 



Fig. oO. Anosia plexippus, From water color by Mrs. Edith Ricker. 



Butterfly — Expanse of wings 3.7.5-4.5 in., 9G — 114 m m. Upper sur- 

 face tawny red or fulvous, with the veins heavily marked with black, a 

 black terminal border containing two rows of white spots, a complete 

 and partial row of white or lighter fulvous spots in a black space beyond 

 the cell of the fore wings. The males have the wings less broadly bor- 



