56 PARASITES OF MAN 



Trans./ 1865. Idem, " On the Endemic Haematuria of the 

 South Eastern Coast of Africa/' 'Med.-Chir. Trans./ vol. liv, 

 1871. Idem, in Hooper's ' Vade Mecum/ 1869. Hatch, W. K., 

 "Case of Bilharzia h&matobia," in 'British Medical Journal/ Dec. 

 14, 1878, p. 875. Kuchenmeister, F., ' Parasiten/ 1855; Eng. 

 edit., p. 277, 1857. Leuckart, R., 1. c., s. 617, 1863. 

 Sonsino, P., " Richerche intorno alia Bilharzia haematobia in 

 relazione colla Ematuria Endemica delP Egitto e nota intorno 

 un Nematoideo trovato nel Sangue Umano," ' Estr. dal Rend., 

 del. R. Accad./ 1874. Idem, ' Delia Bilharzia haGmatobia e delle 

 alterazione Anatomo-patologiche che induce nell' Organismo 

 Umano, loro importanza come Fattori della Morbilita e Morta- 

 lita in Egitto, con cenno sopra una Larva d'Insetto Parassita 

 dell' Uomo. Estratto dall' Imparziale/ Firenze, 1876. Idem, 

 ' Sugli ematozoi come contribute alia Fauna Entozooca Egi- 

 ziana/ Cairo, 1877. Idem, " La Bilharzia haematobia, et son 

 role Pathologique en Egypte," ' Arch. Gen. de Medicine/ for 

 June, p. 650, 1876. Idem, " Intorno ad un nuovo Parassita del 

 bue (Bilharzia bovis)," 'Estr. dal Rend. del. R. Accad. di 

 Napoli/ 1876. Weinland, D. F., 1. c., p. 67, 1858. 



SECTION II. CESTODA (Tapeworms). 



Tania mediocanellata, Kuchenmeister. This cestode is fre- 

 quently spoken of as the unarmed or beef tapeworm. In general 

 appearance it is very similar to the armed form. It is, how- 

 ever, a larger and broader animal, being at the same time rather 

 stouter. It varies usually from fifteen to twenty-three feet in 

 length, but specimens have been described as attaining thirty 

 feet. It is called the unarmed tapeworm in consequence of the 

 absence of any coronet of hooks on the head ; and consequently, 

 also, from there being no prominent rostellum or proboscis. 

 The place of the last-named structure, however, is supplied by a 

 small rudimentary disk, which I have seen protruded on pres- 

 sure (fig. 20). Usually this disk forms a more or less conspicuous 

 cup-shaped circular depression, which has been compared to and 

 described as a fifth sucker. That it is not, in any structural 

 sense, comparable to the true suckers, I have had abundant 

 opportunity of ascertaining ; nevertheless, I do not doubt that it 

 is to a slight extent capable of being used by the parasite as a 

 supernumerary holdfast. The anchorage thus secured, however, 

 is by no means equal to that obtained by the armed species. 



