MYIASIS— TYPES OF INJURY, LIFE HISTORY, HABITS 189 



it. is generally believed that the eggs are deposited on the ground in places 

 frequented by hosts and the larvae hatch and penetrate directly through 

 the skin. In some cases it appears that eggs have been deposited on 

 clothing, especially if moist with perspiration. They appear in March 



^^fffgg 



Fig. 38. — Full-grown larva of the Tumbu-fly (Cordylobia cmthropophaga, Griinberg). 

 Ventral view. X 6. (From Austen.) 



^=5s^554 



F^iG. 39. — The Tumbu-Fly {Cordylobia anthropophaga, Griinberg). Female. 



(From Austen.) 



X 6. 



and diminish until some time in September when they entirely disappear. 

 Experiments conducted by Roubaud indicate that the choice of host 

 depends mainly on body temperature, the high temperature of hogs and 

 fowls being fatal to the larvse. 



Cordylobia rodhaini Gedoelst is the cause of cutaneous myiasis in the 



