178 ANIMAL PAHASITES. 



parvulo ; osculis sutoriis et rostello perparvis (0*34 millim.) collo 

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

 positis (32, 38, 40 ad 42), ex Leuckartii mensuris 0-178 et 0'114 

 mill.j ex meis 0*175 215 et 0'117 126 lortyis, proceris, minus 

 aduncis, spind (Doru, Tap, dental process) in hamulis majoribus 

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

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

 Strobila ex articulis composita, quorum postremi longit. habent 

 ]0 15 mill, et latitudinem 4 5 mill. ; pori genitales irregulariter 

 altcrnantes ; uterus trunco mgdiano perbrevi, ramis later alibus 

 majoribus perpaucis (9 11) et perbrtvibus, wide ramificationes 

 in turtnis positce emittuntur. Ovula 0'039 mill. long, et lat. ; 

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

 Proglottides perlongce et procerce. 



Habitat in Cane domestico et Cane Lupo (Tcenia 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 gelatinosis, pone collo ex receptaculo 

 capitis aut scolicis in vesicte cavitatem emissis. Metamorphosis 

 in Taeniam 10 12 hebdomates post pastum peracta. 



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

 saepius 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 Kudolphi^s Taenia 

 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 Tanice 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 Tcenia described as T. solium 



