264 Veterinary Medicine. 



Hystrichis Pachycephalus of the Swan (thick head). 

 This gross and prickle headed parasite was found in nodules of 

 the muscosa of the proventriculus of the swan. 



INTESTINAI. PARASITES AND MESSMATES. OP 

 HORSES, ASSES AND MULES. 



Infusoria. Globidium Leuckarti. Tania Perfoliata : Large unarmed 

 head, short, broad body ; ova polyhedral, in small and large intestines ; 

 Germany, Russia, Scandinavia, France, United States. Symptoms of intes- 

 tinal worms. Treatment, tseniacides. T. Mam,illana : Unarmed head, suck- 

 ers with crescentic opening, segments at first mere transverse lines, and at 

 tail 2 to 3 mm. long by 4 to 6 mm. broad. In duodenum and ileum, soli- 

 peds ; Germany, Scandinavia, France, America. T. Plicata : Unarmed 

 head, cupped suckers ; 6 to 30 inches. In small intestine and (rarely) stom- 

 ach ; soliped ; Senegal, Tunis, France, Germany, America. Symptoms 

 of intestinal worms, low condition, variable appetite, irregular bowels, 

 indigestion, colic, etc.; passage of segments. Treatment: tseniacides. 

 Cysticercus Fistularis : Tape-worm larva in peritoneum, solipeds. France, 

 Germany. Head armed ; mature form unknown. Am.pkistom.a of Collinsi, 

 of Stanley, and of Sonsini : Conical or elliptical, red worm, two suckers, 

 buccal and caudal ; in intestines and nose, pharynx, gullet and stomach. 

 India, Egypt, Senegal, Guadaloupe. Causes epizootics, with sudden death, 

 or indigestion, enteritis, anaemia, or emaciation. Treatm.ent: As in disto- 

 matosis. Ascaris Megalacephala : Large head, trilabiate mouth, tapers to 

 ends, 5 to 15 inches long, in small intestines (bile or pancreatic ducts). 

 Cause, colics, indigestions, watery diarrhoea, emaciation, ansemia, pot-belly, 

 passage of worms or ova. Treatment: Tartar emetic, oil of turpentine, 

 benzine, thymol, arsenic. Prevention: Pure water, clean mangers, salt. 

 Oxyuris Curvula : In large intestine, curve in anterior part of body, one 

 inch long; ova with button-like prolongation. Causes indigestion, ill- 

 health, fur on anus, rubbing rump, passage of worms or eggs. Treatment : 

 As for ascarides ; quassia, etc., as enema. Oxyuris Mastigodes : Tail of 

 female 3 or 4 inches ; common. Treat as for curvula. Sclerostoma Equi- 

 num ; S. Tetracanthum : Armed mouth like equinum, but with four large 

 opposing teeth ; i >^ to 2 iuches ; in large intestine ; larvEe in cysts in mu- 

 cosa, and in pea-like manure-pellets. Pathogenesis, symptoms and treat- 

 ment as in oxyuris. Filaria Papulosa : A silk-like thread worm, active 

 movements, mouth with eight papillas. In serosa, eye, connective tissue ; 

 unthrift, dropsy of sheath, scrotum, limbs ; no effective treatment. An- 

 guillula; Diptera Larvae ; CEstrus ; Helophilus Pendulinus. 



INFUSORIA IN LARGE INTESTINE. 



Entodinium Bipalmatum. Conical, with mouth at base, 

 lyength, 600/W.. 



