ADULT TAPE-WORMS. 



Plates XII to XV. 



The flocks of this country are infested by two species of adult tape- 

 worms, remarkably different in form, size, habits, and distribution. 

 They are Tcenia fimhriata, Diesing, and T. expansa, Kud. Each are 

 named from predominant characteristics. 



Keunuinu states that European sheep harbor more species of adult 

 tape- worms than other animals, and enumerates ten species which have 

 been described, viz: Tmnia expansa, ^nd; T. alba, Kerr ; T. Benedeni, 

 Moniez; T. aculeata, Kerr; T. ovilla, Eivolta; T. Giardi, Moniez; T. 

 Vogti, Mouiez; T, centripunctata,'Riv,; T. globipunctata,liiv.; T.ovipunc- 

 iafa, Riv. 



The majority of these species are apparently new to science, and con- 

 sequently unconfirmed. Some seem to be well founded, while others 

 may eventually prove to be re-descriptions of other better established 

 species. With the exception of T. expansa, the writer has as yet found 

 no traces of any of them, and it is probable that they do not occur 

 here. 



A description of the tape-worms found here, and the diseases they 

 cause, follows. 



THE FIMBRIATE TAPE-WORM. 



T.iENIA FIMBEIATA, Dicsing. 

 Plates XII and XIII. 



Tape- worms in Wesfern sheep were noticed by ranchmen in the early 

 days of ranching, but did not attract the notice of veterinarians until 

 1883-'84 when Dr. Faville, of the Colorado State Agricultural College, 

 first directed attention to them. (Report Veterinary Department of 

 Colorado State Agricultural College, Jauuary, 1885.) An earlier epi- 

 zootic, due to tape-worms, had been reported to Mr. Stewart, who, in 

 the National Live Stock Journal, for September, 1875, records their pres- 

 ence in Missouri sheep, and from specimens at hand determined them 

 as Twnia plicata. As this tcenia does not occur in sheep, but in horses, 

 it is quite likely that Mr. Stewart saw T. fimhriata. 



In a recent letter to the Department of Agriculture, the late Hon. J. 

 M. Givens reiterates an opinion formerly expressed by him in local so- 

 cieties of wool-growers, and published by him in Denver (Colo.) papers 



89 



