SuBrAMILY CALLIPHORINAE 943 
green, and these often tend toward purplish in certain lights. 
The cause of such color differences is not fully understood, but 
they are not of apparent taxonomie significance. Male specimens 
of typical color often turn bluish in a relaxing jar. 
Distribution. Neotropical and Nearetic: South and Central 
America, and extending northward to Port Lavaca and Uvalde, 
Texas. 
Biology. Adults of both sexes may be collected throughout 
Central America on materials of decay. It is the common green 
bottlefiy of the market places of Guatemala, Honduras, Nicara- 
cua, Panama, Venezuela, and the Guianas. Specimens may be 
collected upon rotting fruits and garbage as well as upon ear- 
casses and they are commonly attracted to meat-baited traps. 
Although other species of the genus are uncommon in the tropics 
this species apparently occurs at nearly all altitudes and in 
nearly all situations from the tropical rain forests along coastal 
regions to pine flats in the mountains of Guatemala. Larvae 
have been recovered and adults have been reared from rotting 
fruits in Panama, and from decaying meat in Puerto Rico (Jan. 
6, 1936, Dozier). Lopez (1938) reared specimens from epithelial 
detritus on the feet of a fowl infested with Cnemidocoptes mutans 
Robin. 
Roberts (1933) found that eximia often occurred in trees in 
the vicinity of Uvalde, Texas. 
Phaenicia mexicana (Macquatt), new combination 
Lucilia mexicana Macquart, Diptéres exotiques, vol. 2, no. 3, 
p. 300, 1843; Aubertin, Linn. Soe. London Jour., Zool. 
38 :422, 1933. (Type, male from Mexico, in the British 
Museum. ) 
Lucila unicolor Townsend, Smithsn. Mise. Collect. 51:121, 1908; 
Shannon, Insecutor Inscitiae Menstruus 12:78, 1924; Wash. 
Ent. Soc. Proce. 28 (6) :133, 1926; Roberts, Ent. Soc. Amer. 
Ann. 23 :790, 1930; Ecology, 18 (3) :309, 1933. (Type, female 
from New Mexico, No. 10892, U. S. National Museum.) 
Lucilia infuscata Townsend, Smithsn. Mise. Collect. 51:123, 1908. 
(Type, male from New Mexico, No. 10895, U. S. National 
Museum. ) 
Lucilia caesar Tothill (nee Linnaeus), in part, Ent. Soc. Amer. 
Ann. 6:248, 1913. 
Townsend deseribed Lucilia infuscata from nine males and 
six females from Massachusetts, New Hampshire, Ohio, New 
