62 Veterinary Medicine. 



Lucilia Macellaria. Campsomyia Macellaria is 9 to 

 10 mm. long, with a bronze blue thorax, traversed from before 

 backward by three darker purple blue lines, and black legs. The 

 wings are brown at the base. The larvae (14 to 15 mm.) are 

 smaller than those already described, yet very destructive. 



This is little known in the Northern States, but in the Middle 

 and especially in the Gulf States it becomes most injurious or 

 fatal. It is common from this south to the Argentine Republic. 

 The flies deposit their eggs in wounds, on soiled surfaces, on the 

 perspiration in.side the thighs and elbows, in the sheath and other 

 open cavities. With their buccal booklets the larvae lacerate the 

 skin and burrow into the raw sores so that, if neglected, they 

 soon reach a fatal extension. This fly is very predatory attack- 

 ing man and beast with equal readine.ss. Horses, cattle, sheep 

 and swine suffer indiscriminately, the main acce.ssory factors be- 

 ing the soiling of the skin by diarrhoea, manure, rains, dews, 

 perspirations, and other secretions, and the shelter afforded to the 

 fly by bru.sh and foliage. 



Ochromyia Anthropophaga (ochros yellow, anthropos man, 

 phagein eat). Cayor Fi,y. This fly, a native of Senegal, has a 

 grayish yellow body, with two longitudinal black bands on the 

 thorax and black spots on the abdomen. The head has a hard 

 cru.staceous covering and with the antennae is hairy. The wings 

 are slightly smoky. The eggs are deposited in the sand where 

 animals lie, yet the larvae supposed to be those of this fly are 

 found in small tumors in the fat and other parts of the body of 

 man and animals (dog, cat and goat), where they mature, and in 

 six or seven days drop out, become a pupa, and finally a mature 

 fly. Young animals suffer most, .sometimes fatally. 



To Prevent Reproduction of Diptera. Diptera which pass 

 through their larval stages in still water or moist earth (mosqui- 

 toes, blackflies, breeze flies, tsetse) can be largely controlled by 

 drainage. When this is not feasible then myiacides, like petroleum , 

 kerosene, oil of tar, oil of turpentine, quick lime, added to their 

 breeding pools will cut them off in the larval stage without ren- 

 dering the water poisonous to stock. In the ca,se of muscae, 

 which breed largely in horse manure, one should avoid such de- 

 conipcsing material in the vicinity of buildings, or mix it with 

 kero.sene, phenol, copperas, or other agents that will kill the larvae. 



