Euteritis til Native Animdls. 44) 



ventino- contraction. The spores are ovoid or spindle-shaped — - 

 10.7 to 12.4/x long, hy 2.78 to 4.25/a in greatest breadth. 

 (Tenerally one extremity is broader than the other, and stains 

 more deeply. The nucleus is large, stains deeply with iron 

 haematoxylin, and is usually situated towards the broader end 

 of the spore. A few minute granules are to be found, situated 

 chiefly towards the narrower part of the spore. 



Ileocystis avombati ill Wombat (Phascoloniys- latifrons). 



Unfortunately this animal could not be examined until a lapse 

 of 24 hours after death, consequently the results are not nearly 

 so satisfactory as in the case of the other animals. In view, how- 

 ever, of the pathological and parasitic conditions being similar 

 in many respects to those described in the other native ani- 

 mals, though differing in important details, it is thought they 

 are worthy of record. 



The woml)at, an adult, had reached Melbourne but a few days 

 j^rior to death. On exposure of the abdominal viscera the small 

 intestine presented a peculiar reticular mottled appearance. 

 The mucosa on incision was seen to be greatly thickened, the 

 surface being Avrinkled in the form of a fairly regular network. 

 On removal of the catarrhal material which covered the surface, 

 this condition Avas especially noticeable on placing a portion of 

 intestine in water, when the general appearance was "that of a 

 thick grey fur. 



Only the small intestine was affected, and practically in a 

 uniform manner, the stomach as well as the large intestines 

 being free of any abnormality. 



Sections examined microscopically show the pathological 

 changes to be confined to the mucosa and sub-mucosa. Tlie 

 villi are greatly hypertrophied more or less uniformly through- 

 out, but at dift'erent points there is much hyperplasia of the 

 underlying connective tissue, giving the wall a papillomatous 

 appearance, and accounting for the reticular, wrinkled condi- 

 tions so apparent to the the naked eye (Plate LXXX., Fig. 16). 



The villi are almost entirely denuded of epithelium, and the 

 great majority of Lieberkiihn's crypts are obliterated, only a 

 few of the acini being left. The new connective tissue under 



17 



