114 
to penetrate the mucous membrane should they desire to t 
capable of so doing. 
Larvae found in the lesions resemble those of Habronema 
muscae and H. megastoma, the cuticle of both these Macs 
possessing longitudinal ridges, but not those of H. mierostoma, 
the cuticle of this form showing no longitudinal ridges. b 
. megastoma is found in tumours situated in e o 
mucosa of the stomach of the horse. It is generally Be 
that it perforates the gastric mucous membrane, p obably 
semi-digested material in the alimentary canal. It is, ey 
fore, a parasite of tissues rather than of the contents o 
g 
loma than the larvae of the other two species. Experimental 
evidence also suggests that the larva of H. megastoma m 
E Z se 
Although the experimental evidence suggests that © 
arva of H. muscae di not readily penetrate the conjunciv 
. OF produce a granulomatous reaction in the subcuta 
‘ 
