TAFE-WUiniS OF THE SUIJ-FAMII.Y -\VF|-Kf.I.lNIX.F. 335 



PeiToncito. — -Trattato teorico-pratico sulle malattie i/iu c-oinumni 

 degli Aiiimali domestici." Torino, 188H. 



Railliet.— ' Elements de Zoologie Mt'dicale et Agricole/ Paris. 1S8H 

 (1st edition). 



Neumanu.— • Traite des Maladies parasitaire^ nou-miertildenners des 

 Animaux domestiqiies." Paris, 1888 (1st edition). 



Neumann. — " Observations sur les Tenias du Moiiton," • C. R. Soc. 

 Hist. Nat.. Ttniluuse," 1891. 



Neumann. — ■ Traite," 1892 (2nd edition). 



Railliet.— ^ Elements." 1893 (2nd edition). 



Perroncito.—- Trattato teorico-pratico," 19(»2 (2ud edition). 



Tenipere. — "• Parasites internes de Fliomme et des Animaux domes- 

 tiques,"' ' Micrograi^lie Preparateur." vol. xiv. 19()H. p. 27. 



Gough. — •• Notes on some South African Parasites,'" • S.A.A.A.S.. 

 Grahamstown. 19U8. 



Gough. — "The Anatomy of Stilesia centripunctata (Rivolta)."' 

 • The Veterinary Bacteriological Laljoratories of the Transvaal," Pre- 

 toria, 19(j9. 



Habitat. — Small intestine of sheep. 



Geograpliical Distribut iou . — Italy (Rivolta, lcS74) ; 

 Alo-iers (Railliet, 1891); South Africa (Gough, 19(38). 



In life the worm has a gelatinous, semi-transparent a})pear- 

 ance. The strobila from 10 cm. from the scolex on appears 

 longitudinally ; there is a median opacpie line, flanked on 

 either side by a very trau.sparent line (caused by the enormous 

 ventral canals) ; laterally on each side the worm is again some- 

 what less transparent. 



Avitelliua centripunctata (Rivolta) reaches 202 cm. 

 to 285 cm. in length. The greatest breadth is frequently, 

 but not always, near the scolex. The breadth varies from 

 1 mm. to 3 mm. (or even 4 mm., Railliet). The anterior and 

 middle of the strobila is flat, the posterior end is round or 

 elliptical on section. 



The scolex is large (fig. 7) ; in ray specimens the suckers 

 are invariably directed diagonally outwards and forwards. 

 Railliet and Tempere, however, figure it with the suckers 

 directed anteriorly. The scolex is usually, but not always, 

 broader than long ; it measures from I'b mm. to 2'8 mm. broad 

 by I'o mm. to 3'1 mm. long. 



