85g dh. willtam xicoll ox 



References. 



1. De Faria, Gomez. 1910. — Contribution towards the Classifi- 



cation of Brazilian Entozoa. II. Dicrocoelium infidum, 

 n. sp., Parasite of the Gall-bladder of Eunectes marina L. 

 Memorias do Instituto Oswaldo Cruz, ii. (1) pp. 22-28, pi. 2. 



2. De Faria, Gomez. 1911. — Beitriige zur Systematik der bra- 



zilianischen Helminthen. IV. Styphlodora condita, n. sp. 

 Memorias do Instituto Oswaldo Cruz, iii. (1) pp. 40-45, pi. 1. 



3. Goldberger, J. 1911. — A New Trematode {Styphlodora 



hascaiiiensis) with a blind Laurer's Canal. Proc. U.S. Nat. 

 Mus. xl. pp. 233-239. 



4. Leidy, J. 1850. — Descriptions of Two Species of Distoma, with 



the partial History of one of them. Journ. Acad. Nat. Sc. 

 Philadelphia, ser. 2, vol. i. pp. 301-310, pi. 43. 



5. Looss, A. 1899. — Weitere Beitrage zur Kenntniss der 



Trematoden-Fauna Aegyptens. Zoolog. Jahrbiicher, Abt. f. 

 Syst. xii. pp. 707-708, pi. 26, fig. 28. 



6. Odhner, T. 1910. — Nordostafrikanische Trematoden. Results 



Swedish Zool. Exped. to Egypt and White Nile, 1901, p. 53, 

 note 2, fisr, v. 



51. Statistical Note on the Worm Parasites collected from 

 the Animals dying in the Zoological Gardens, from 

 December 1910 till April 1912. By William Nicoll, 

 M.A., D.Sc, M.D., F.Z.S., Lister Institute o£ Preventive 

 Medicine, London. 



[Received May 30, 1912 : Read June 4, 1912.] 



Index. 



Page 

 Ethology : Animals dying in the Zoological 

 Society's Gardens, numbers infected with 



parasitic worms 857 



(ieographical Zoologj"^ : Importance of ascertaining 



distribution of parasitic worms 857 



At the scientific meeting of the Society held on May 21st last, 

 I referred to the excellent work which is being done by the 

 Prosectorial department in acquiring information concerning the 

 parasites which infect the animals living in the Gardens. This 

 is particularly noteworthy in regard to the worm parasites, about 

 which many valuable facts have been obtained. Following my 

 remarks at the meeting. Dr. Beddard suggested that 1 might be 

 able to supply some general information regarding the animals 

 which had been sent to me for examination, and acting on this 

 suggestion I venture to offer the following communication. 



The scheme, which owes its initiation to the Secretary of the 



