80 W. N. F. WOODLAND 



larvae found in a 280 mm. specimen oi A. para^ronopora 

 are oval in shape and flattened, and possibty do not possess 

 the large gland-cells, but these may be degenerate forms. 



7. The genus Amphilina is re-defined and the more con- 

 spicuous specific differences between the five species of Amphi- 

 lina are stated. 



8. A brief account of the irregular-form stage in the life- 

 history of A. paragonopora is given, from which it 

 appears that the amorphous masses found on the mesentery 

 of the fish and which give rise to the active Amphilina, arise 

 from small spherical multicellular masses (about 30 microns 

 in diameter) enclosed in capsules formed by the mesentery 

 tissue. All transitions can be observed from these smallest 

 masses up to the stages in Pis. 3, 5, figs. 2 and 45, and thence to 

 the active Amphilina. 



Occasionally the masses develop into sexual Amphilina inside 

 the capsules which encloses the masses, since Amphilina con- 

 taining full-growu larvae are occasionally met with inside large 

 capsules. 



Occasionally also larvae liberated into the body-cavity 

 become secondarily encapsulated by the mesentery tissue and 

 are apparently disintegrated. 



Literature Eeferences. 



1. Colm, Ludwig. — " Zur Anatomie der Am])hilina foliacea (Rud.) ", 



' Zeit. f. wiss. Zool.', Bd. Ixxvi, 1904, p. 367. 



2. Hein, W. — " Beitrage zur Kenntnis von Amphilina foliacea", ibid., 



p. 400. 



3. Janicki, C. v. — " t)ber den Ban von Amphilina liguloidea, Diesing", 



ibid., Bd. Ixxxix, 1908, p. 568. 



4. Lang, A. — " Untersuchangen ziir vergleichenden Anatomie und 



Histologic des Nervensystems der Platyhelminthes ", ' Mittheil. 

 a. d. zool. Stat. Neapel ', Bd. ii, 1881, p. 394. 



5. Monticelli, Fr. Hav. — " Appunti sui Cestodaria ", ' Atti d. R. Accad. 



d, Sci. Fis. e Mat.', vol. v, ser. 2 (6), Napoli, 1893, p. 1. 



6. Pintner, Th. — " Ober Amphilina ", ' Verb. Ges. deutsch. Naturf. u. 



Aerzte, Leipzig', Bd. Ixxvi, 2 (1), 1906, p. 196. 



7. Salensky, W. — " Ueber den Bau und die Entwickelungsgeschichte der 



Amphilina (Monostomum foliaceum, Rud.) ", ' Zeit. f. wiss. Zool.', 

 Bd. xxiv, 1874, p. 291. 



8. Southwell, T. — " Notes from the Bengal Fisheries Laboratory, Indian 



Museum. No. 2. On some Indian Parasites of Fish, &c.", ' Records 

 Indian Museum ', vol. xi (iv), 1915, p. .326. 



9. Wagener, G. R. — " Enthelminthica, No. V. Ueber Amphilina foliacea, 



mihi (M. foliaceum, Rud.), Gyrocotj-le, Diesing, imd Amphiptyches, 

 Gr. W.", ' Archiv f. Naturg.', Bd. xxiv, 1858. j). 244. 



