178 ANIMAL PARASITES. 



parvulo • osculis sutoriis et rostello perparvis (0'34 millim.) collo 

 tenuiore, quam in T. serrata et Cocnuro ; hamulis duplice ordine 

 positis (32, 38, 40 ad 42), ex Leuckartii mensuris 0478 et 0T14 

 mill,, ex meis - 175 — 215 et 01 17 — 120 longis, proceris, minus 

 aduncis, spina (Dorn, Tap, dental process) in hamulis majorlbus 

 perlongd, tenui et recta, in hamulis minoribus etiam longiore et 

 bipartita et stylo, qui unguis mugnitudine super atur, instructis. 

 Strobila ex articulis composita, quorum postremi longit. habent 

 10 — 15 mill, et latiludinem 4 — 5 mill. ; pori genitales irregulariter 

 alternantes ; uterus trunco mediano perbrevi, ramis luteralibus 

 majoribus pcrpaucis (9 — 11) et perbrevibus, wide ramificationes 

 in turmis positce emittuntur. Ovula - 039 mill. long, et lat. ; 

 testa crassiore (0*0057 mill.) et embryonibus 0*02 long, et lat. 

 Proglottides perlongce et procera. 



Habitat in Cane domestico et Cane Lupo (Tania marginata, 

 autorum).] 



Scolex quiescens = Cysticercus tenuicollis. Vesica caudali 

 tenui permagna (1, 2, 4>, 6" et ultra), corpore 14 — 30 mill, et 

 ultra longo, 5 — 10 mill, lato, cylindrico ; collo 8 — 15 mill, longo, 

 capite uti in Tcenia filis 2 gelaiinosis, pone collo ex receptaculo 

 capitis aut scolicis in vesica cavitatem emissis. Metamorphosis 

 in Tceniam 10 — 12 hebdornates post pas turn peracla. 



Habitat: Rarius in hominis abdomine (mesenterio et hepate), 

 sapius in Ruminantium, Equi, Suis Scrofce, Sciuri, Simice, &c, 

 cavitate abdominali. 



The mature Tania from which this cystic worm is derived 

 lives in the intestines of dogs, especially sheep-dogs and 

 butchers' dogs, and also, no doubt, in those of the wolf. 

 According to Leuckart, it is identical with Iludolphr's Tcenia 

 marginata of the wolf. In size it most resembles T. solium, 

 from which, however, it is distinguished by the form, number, 

 and size of the hooks, by the degree of dilatation of the uterus, 

 the great development of the lateral longitudinal vessels, and by 

 the structure of the neck. Although the hook- sacs and pig- 

 ment are more distinct in T. solium, traces of them may, never- 

 theless, be discovered in this species. This worm grows to a 

 length of about 2 — 3 yards ; its mature segments are essentially 

 distinguished from those of all other large-hooked Tama of the 

 dog by their size, equalling or even frequently exceeding those 

 of T. solium in this respect. I shall err little from the truth, 

 in expressing the opinion that the Tania described as T. solium 



