EQUINE ENTOZOA. 343 



The tumours are apt to rupture, and the contents escape 

 into the peritoneal cavity. 



6. SPIROPTERA MICROSTOMA.— This species, which 

 may probably be regarded as a variety of spiroptera megas- 

 toma, is found free in the stomach, and does not appear to 

 be productive of injury. 



7. STRONGYLUS MICRURUS, or Lung-worm.— This 

 parasite, although so productive of bronchitis in calves, 

 rarely occasions serious results in solipeds. However, it is 

 not unfrequently found in the bronchial tubes of asses and 

 horses on post-mortem examination. 



8. STRONGYLUS GIGAS, or Eenal Strongyle. — 

 This worm has been found in the kidney of the horse. 

 In 1792 it was observed by M. Chabert, and reported or 

 witnessed by Eudolphi and Leblanc. 



9. FILARIA LACRYMALIS, or Small Eye-worm.— 

 This thread-worm has been found between the lids and 

 eyeball of the horse. 



The males are half an inch long, and the females two-thirds 

 of an inch. It is viviparous. 



10. FILARIA PAPILLOSA, termed by some Filaria 

 Oculi. 



The males are two to three inches long, the females five 

 to seven inches. 



Description, — The head is broad ; the mouth wide, and 

 surrounded by a ring of chitine, and possesses two den- 

 ticles. On the neck are two papillae, near the middle line ; 

 besides sixteen caudal papillae, eight on either side. The 

 tail of the male is spirally twisted ; the tail of the female 

 slightly curved. 



This worm infests the globe of the eye and its tunics, 

 and is often contained in a cyst within the cornea. It is 

 also found in the thorax, abdomen, membranes of the brain, 

 muscle, and cellular tissues. 



