320 Records of the Indian Museum. (Vor, 21, 
damaged. ‘There was a sinus in the free edge of the gill. It is not 
clear how the tumour was attached, but the connection was ap- 
parently a slender one. The tumour is lobulated, fibrous in 
structure, without any distinct lamina.”’ 
Simple hyperplasia of the thyroid has also been recorded in 
pike, bass, and occasionally in herring, by Marine and Lenhart. 
During an experience of about five years on the Ceylon Pearl 
Banks, although I had occasion to examine very many thousands 
of fish, in no instance did I see a case of visible tumour in any 
examined. 
LIST OF LITERATURE /CIIaD: 
1. Bonnet, R.—Studien zur Physiologie und Pathologie der 
Fische. Bayerische Fischeret-Zeitung, Miinchen, nr. 6, p. 79, 1883. 
2. Gaylord, H. R. and Marsh, M.C.—Carcinoma of the Thyroid 
in the Salmonoid Fishes. Bulletin of the Bureau of Fisheries, 
vol. XXXII, 1912. Document No. 790. Issued April 22, 1914. 
3. Gilruth, I. A.—Epithelioma affecting the branchial arches 
of salmen and trout. Report of the New Zealand Department of 
Agriculture, Division of Veterinary Science. 1902. 
Gudernatsch, J. F.—The structure, distribution and varia- 
tion of the thyroid gland in fish. Journal of the American Medical 
Association, vol. 54, no. 3, Jan. 15, 1910, p. 227. (American 
Association for Cancer Research, meeting held November 27, 1909). 
5. Jaboulay.—Poissons atteints de goitres malins hereditaires 
et contagieux. Journal de Médécine et de Chirurgie pratiques, t. 
79; P. 239, 1908. 
6. Marine, David and Lenhart, C. H.—-On the occurrence of 
goitre (active thyroid hyperplasia) in fish. John Hopkins Hospital 
Bulletin, vol. XXI1, no. 229, p. 95, April 1910. 
7(a). Pick, L.—Der Schilddrusenkrebs der Salmoniden. Aus 
dem Laboratorium der L. und Th. Landauschen Frauenklinik, 
Berlin. Berliner klinische Wochenschrift, 1905, nos. 46-49, p. 1435- 
1542. 
7(b). Pick, L.—Ueber einige bemerkenswerte Tumorbildungen 
aus der Tierpathologie, insbesondere uber gutartige und krebsige 
Neubildungen bei Kaltblutern. Berliner klinische Wochenschrift, 
1903, nos. 23-25. Abstract in Journal American Medical Associa- 
tion, August 8, 1903, p. 401. 
8. Plehn, Marianne.—Bosartiger Kropf (Adeno-Carcinom der 
Thyreoidea) bei Salmoniden. Allgemeine Fischeret-Zeitung, Miin- 
chen, no. 7, p. 117-118, April 1, 1902. 
9. Scott.—Note on the occurrence of cancer in fish. Tvan- 
sactions and Proceedings of the New Zealand Institute, Wellington, 
N.Z., vol. 24, 1891 (issued May, 1892), pp. 201, 1 plate. 
