THE CAYENNE TICK. 153 
LIFE HISTORY. 
Observations on the biology of this species have been made by 
Hunter and Hooker (1907), Hooker (1909), Rohr (1909), and New- 
stead (1909). 
Fig. 12.—The Cayenne tick, Amblyomma cajennense: Distribution in North and Central America. The 
large dots show localities where the species has been collected in our investigation. The small dots 
indicate the probable range of the species. (Original.) 
The egg (Table LXVIT).—In the laboratory in August, at a mean 
temperature of 84° F., oviposition commenced on the ninth day fol- 
lowing dropping while out of doors, at a mean temperature of 84°F., 
11 days passed. Eight of 10 females collected April 22, 1908, and 
kept in the laboratory at a mean temperature of 63° F. commenced 
