TAPE-WORMS OP THE SUB-FAMILY AVrrELLIXlX,!-:. 331 



disclien zoologischen Expedition nacli dem Kilimandjuro. dem Meru 

 mid den Umgebenden Musaisteppeii deutsch Ostafrikus," Stockholm, 

 1909. 



Habitat. — Small intestine of sheep and goats. (Linstow's 

 record from cattle in 'Compendium der Helmintliologie ' is a 

 printer's error, as he is there citing Rivolta, who described 

 the worm from sheep. 



Geographical Distrilnition. — Italy, Rivolta, 1874; India 

 (Giles fide Stiles, 1003 — also specimens in Railliet^^ collection 

 examined by the present author) ; France, Railliet, 1890. 



For the following description I have had to rely consider- 

 ably on Stiles (1893), the material at my disposal being 

 rather badly macerated. 



The worms are stated to be transparent, gelatinous in 

 appearance when living, resembling Stilesia hepatica, 

 Wolffhtigel, in this respect. 



The length varies from 45 to 00 cm., Railliet, 1890. The 

 widest segments are 2'5 m.m. broad, the anterior and posterior 

 being much narrower. 



The scolex is square when viewed en face; it measures 

 0'768-0*9 mm. in diameter. The suckers (tig. 12) are 

 directed anteriorly and diagonally ; their opening is round or 

 oval. The anterior portion of the strobila is sometimes con- 

 tracted, as is more fi'equently the case in Stilesia hepatica, 

 Wolffhiigel. 



The proglottids are always much broader than long, but iu 

 the posterior portion of the strobila are comparatively longer 

 than in the )niddle of the worm. The middle portion is very 

 frequently much contracted, the outline becoming crenate 

 and twisted. 



There are four to seven testicles on each side, lying lateral 

 to the ventral canal, median to the nerve (fig. 10). The 

 ovarium lies on the pore side, just median to the ventral canal; 

 the uterus is double, one lying dorsal to the ovarium, the 

 other close to the ventral canal of the other side of the body. 

 The vagina lies dorsal to the cirrus pouch; it crosses the 

 ventral canal dorsally ; median to the ventral canal it increases 



