472 Worms ill the Intestinal Tract. 



Echiuokokkus unci seine Ta-nie, Inaug:. Diss., 1892.— Miiller, Miinich, m. W., 1893, 241. 

 — IS^eumann, Eev. vet., 1891, 417.— Posselt, Miineh. m. W., 1906, 537, 605 (Lit. on T. 

 echinococcus).— Eailliet, Bull., 1895, 197.— v. Eatz, A. L., 1904, 41.— Eegenbogen, 

 B. t. W., 1908, 425.— Schiel, B. t. W., 1901, 648. 



(e) Tapeworms in Cats. 



Etiology. Among tlie tapeworms parasitic in the intestinal 

 canal of cats, tlie most important is : 



Taenia crassicoUls, a tapeworm 15 to 60 cm. long, with a globular head with 

 four large, prominent suckers and a strong rostellum, which carries a wreath com- 

 posed of 29 to 52 booklets. Immediately after the head follow segments as wide or 

 wider than the former; these segments increase in sii-e from 8 to 10 mm. long and 

 5 or 6 mm. wide. The ova have a diameter of 21 to 27 /*. 



The tapeworms develop from Cysticercus fasciolaris, which is contained in the 

 liver of mice or rats. 



Cats are also infected by the following other tapeworms: Ttenia elliptica 

 (probably identical with Dipylidium caninum) which may be present in several hun- 

 dred individuals in the same host; Dipylidium Chyzeri, the rostellum of which is 

 provided with rose thorn-like booklets arranged in 12 to 13 rows; further, Taenia 

 lineata and Bothriocephalus felis. 



Symptoms. T. crassicollis bores deep into the wall of the 

 intestine and may exceptionally perforate it. If these tape- 

 worms are present in larger numbers they may canse chronic 

 intestinal catarrh, with poor appetite, diarrhea, then consti- 

 pation, salivation, dimimition of the visual and auditory power, 

 emaciation, finally convulsions. The disease sometimes appears 

 in an enzootic form, particularly in years w4ien mice are very 

 abundant. 



Treatment is the same as in dogs, but the vermifuges, etc., 

 have to ])e given in one-half the doses indicated for dogs. 



Literature. Deich, S. B., 1901, 46.— V. Eatz, Kozl, 1897, II, 28, 38. 



(f) Tapeworms in Rabbits. 



Hookless taenia are rarely found in rabbits, frequently in wild 

 hares, they are distinguished from the Anoploeephalidfe of equidae by 

 an alternate arrangement of the genital pores on the margin of the pro- 

 glottides. These tapeworms are comprised under the name of Taenia 

 pectinata; according to Railliet and Neumann, they represent three 

 distinct species. 



Tapeworm infection frecjuently appears enzootically among wild 

 hares, rarely in such 'v\ade distribution among rabbits; its clinical 

 symptoms are a progressive anemia with emaciation and increase in 

 the size of the abdomen. Sometimes tapeworms get into the free per- 

 itoneal cavity of the infected animals ^dthout leaving any distinct 

 traces of perforation of the intestines (Railliet). The diagnosis of this 

 infection can be made from finding proglottides in the feces or from 

 postmortem examination of the animals. 



The treatment consists in a preliminary administration of castor 

 oil (tea to tablespoon doses) followed by the following vermifuge which 



