66 



FLIES. 



batch (which may be in a period of from about five 

 days to three weeks), the warmth and moisture of the 

 horse's tongue in Hcking the infested hair, 

 causes the kind of lid or cap to open or 

 crack, and the maggot within sticks to the 

 tongue, and is thus gradually transferred 

 to the stomach. Here the maggots fix 

 themselves to the mucous membrane * by 

 means of two dark brown hooks, one of 

 which is placed on each side of the slit 

 which serves for a mouth, and there they 

 nourish themselves by suction, and are 

 considered to pass from eight to ten months 

 in maggot state, attached by their mouth 

 hooks to the lining membrane of a portion 

 of the stomach. 



Sometimes there may be only a few of 

 these maggots present ; sometimes (as I 

 of Horse Bot bave secu them myself) they are present 

 Fly, nat. size in such numbers as to lie close up against 

 and magnitied q^q]^ other over a large patch of surface, 

 Clark). ^^°^ SO that it hardly seemed possible to find 

 room for another amongst them. 

 Here they live until, when full-fed, they loose their 

 hold ; and, after being thrown to the ground, turn to 

 a brown pupa, from which the Fly comes out in a few 

 weeks. 



For prevention of this attack, such treatment as 

 combing, brushing, or clipping hair, so as to get rid 

 of the eggs, is sure to be of use. Also the application 

 of soaps, or washes, with scents deterrent to insect 

 attack ; and likewise freedom to the horses to shelter 

 in sheds from Fly attack in the heat of the day. 

 Eemedies fall within the province of the veterinary 

 adviser, as special advice is needed for their safe 

 application. 



* In observation of this infestation it is very important for the 

 student to notice accurately to which portion of tlie stomach the 

 Jarva; are attached. 



FiG.51.— Ekss 



