CESTODA 353 



rabbits and hares, but it has not been recorded from those animals 

 in New Zealand. 



Teenia crassicollts, Rud. (larva = Cysticercus fasciolaris, Rud.) 

 Colonel Reid records this tape-worm as occurring in cats in New 

 Zealand. The cyst-stage occurs in rats and mice. 



Teenia serrata, Goeze (larva = Cysticercus pisiformis, Zed.) 

 In 1888 Professor Thomas reported the larva or bladder- worm 

 as fairly common among rabbits in the Waikato, but as rare in the 

 Wairarapa. The tape-worm occurs in dogs, and the cyst-stage in hares 

 and rabbits. 



The parasite does not attack man. 



Teenia saginata, Goeze (larva = Cysticercus mediocanellatee, 

 Davaine ; Cysticercus bovis, Cobbold) 



A case of this was reported from Invercargill in 1908 ; the parasite 

 affecting the muscular tissue of the heart of a bullock. In its adult 

 condition this tape-worm lives exclusively in the intestinal canal of man, 

 while the corresponding Cysticercus is found almost exclusively in the 

 ox. The popular name is the unarmed beef -worm, or the fat tape-worm. 



It is a cosmopolitan species, found especially in the tropics. An 

 individual of this species has been estimated to give off in a year, 

 550 grammes weight of proglottids. 



Teenia (Anoplocephala) perfoliata, Goeze 

 This tape- worm is sometimes met vnth in horses in New Zealand; 

 it is usually found in the caecum. 



NEMA THELMINTHES 



NEMATODA 



Family Ascarid^^ 



Ascaris megalocephala, Cloq. Common White Worm 



Dr Reakes states that this worm, which is found in the intestines 



of the horse, is widely distributed throughout the Dominion. It 



apparently does little harm. It was probably introduced with the 



first horses which came into the country. 



Ascaris suis, Goeze. Large White Worm of Pig 

 This worm, which is not uncommon in the small intestines of the 

 pig, is not uncommon in New Zealand. Dr Reakes states that it 

 does little harm. 



1 In the N.Z. Journal of Agriculture, Vol. xxii, No. 2 (Feb. 1921), at p. 123, it 

 is stated that pigs at Roa were infested with worms — probably Ascaris lumbricoides. 



T. N. z. 23 



