[duff] THE BEAVER FLUKE 95 



General References. 



Gamble, F. W. Trematoda, Cambridge Natural History, Vol. II, 



London, 1896. 

 Parker ef Haswell. Text Book of Zoology, Vol. I., Platyhelminthes, 



London, 1910. 

 Braun, M. Trematodes, Braun's Klassen und Ordnungen des 



Thier-Reichs, Leipzig, 1893. 

 Sedgwick, A. A Student's Text Book of Zoology, Vol. I, pp. 208-262, 



London, 1898. 



Numbered References. 



(1) Otto, R. Beitrâge zur Anatomie und Histologie der Amphisto- 

 meen, Leipzig, 1896, pp. 21-24. 



(2) Willey, A. Foetal Membranes of the American Beaver {Castor 

 Canadensis) Zool. Jahr. Suppl. XV. 2 Band. p. 194" Incidentally I 

 may mention that Trematode parasites were found sparsely 

 in the caecum and large intestines of some of the beavers." 



(3) Rudolphi, C. A. Erster Nachtrag zu meiner Natursgeschichte 

 der Eingeweidwiirmer, Berlin, 1814, p. 94 (Quoted from Braun). 



(4) Bojanus, L. Description d'un ver de la famille des vers à suçoirs 



(Trematodes) trouvé dans le gros intestins du Castor. Mem. 

 Soc. Imp. des Natural, de Moscou. Tom. V. 1817, pp. 270-277. 

 (Quoted from Rudolphi's Synopsis). 



(5) Rudolphi, C. A. Entozoorum Synopsis, Berlin, 1819, p. 91. 



(6) Bojanus, L. Enthelminthica. Isis 1821, II, p. 162-190 (Quoted 



from Otto). 



(7) Laurer, J. F. Disquisitions Anatomicae de Amphistoma conico. 



Diss, in Gryphiae 1830. (Quoted from Otto). 



(8) Dujardin, M. F. Histoires Naturelles des Helminthes, Paris, 



1845, p. 331. 



(9) Diesing, K. M. Systema Helmintha. Vindobonae 1850, Vol. 



I, p. 402. 



(10) Otto, R. L.c. p. 67. 



(11) Ibid. p. 72. - 



(12) Braun., M. Trematodes, Bronn's Klassen und Ordnungen des 

 Thier-Reichs. Leipzig, 1879-1893, p. 905. 



(13) Plate, L. Untersuchungen einiger an den Kiemblàttern des 

 Gammarus pulex lebenden Extoparasiten. Zeit. f. wiss. Zool. 

 XLIII. Bd. p. 175. 



(14) Looss, A. Sitzungsbericht der Kgl. Sachs. Gesellschaft der 

 Wissenschaften. Mathematisch-physische Klasse. s. 17. (Quo 

 ted from Otto). 



