214 Veterinary Medicine. 



until successful. Fleming advises that sulphur should be given 

 internally. Around the eyes balsam of Peru i part, alcohol 4 

 parts is a bland and effective application. It is rubbed in daily 

 after having squeezed out the contents of the follicles. 



Demodex FoUiculorum var. Suis. (D. Phylloides). 

 The female is .24 to .26 mm. long and the male .22 mm. It in- 

 vades the more delicate portions of the skin, snout, neck, breast, 

 abdomen, inner sides of thighs and forearms, and usually respects 

 the tougher dorsal aspect. The parasites seem to multiply 

 rapidly, as many as 1000 having been found in a single follicle. 

 They cause suppurating cavities (pustules) from a millet seed to a 

 hazel nut in size, the smaller sacs bursting into each other to 

 form one large one. Nothing is recorded as to treatment which 

 would naturally be along the same lines as in the dog. 



Demodex FoUiculorum var. Capree. The female is ,23 to 

 .25 mm. long and the male .22 to .23. They have been found 

 on the sides of the body and flanks, giving rise to hard swellings, 

 varying in size from a pea to a hazelnut, and yielding, when 

 squeezed, a large amount of ceruminous debris, made up largely 

 of the demodex. 



Demodex FoUiculorum var. Ovis. This was found by Os- 

 chatz in the Meibomian glands of the sheep, causing conjunctivitis 

 and an appearance of stye. It differed from that of man in hav- 

 ing a longer rostrum and cephalo-thorax. 



Demodex FoUiculorum var. Bovis. The length is 20 mm. 

 The abdomen is short, the rostrum and cephalo-thorax forming 

 two-fifths of the total length. This acarus was found in the muz- 

 zle of cattle ; also in the hides of Illinois and Minnesota cattle 

 (Faxon). The hides when tanned still showed the cavities ex- 

 tending through their thickness. Grimm found a poor unthrifty 

 heifer with pea-like nodules all over the body, but especially on 

 the shoulders. When squeezed these yielded a thick viscid pus 

 containing enormous numbers of the demodex. The head and 

 limbs were unaffected. The other animals in the herd were 

 healthy and thrifty. All had an abundant ration. 



Demodex FoUiculorum var. Equi. This was found by 

 Erasums Wilson in the Meibomian glands of the horse, causing 

 inflammation of the tarsi as in the parallel case in the sheep. 

 Gros also found the parasite in the upper lip of the horse. 



