XVI. NOTES FROM THE BENGAL FISH-ERIES LABORATORY, INDIAN MUSEUM. No. 2. On some Indian Parasites of Fish, with a note ON Carcinoma in Trout. Bv T. S0UTHWE1.L, A.R.C.S., F.L.S., F.Z.S., Dy. Director of Fisheries, Bengal, Bihar and Orissa, Honorary Assistant, Indian Museum. (Plates xxvi-xxviii). CONTENTS. Page (i) A skin disease found on Rashora daniconius . . 312 (2) A parasite encysted in the skin of Cirrhina laiia. . . 313 (3) Cercaria in skin of Anuria danrica. . . -315 (4) Cysts from the skin of Nuria danrica var. grahami . . 315 (5) Encysted Cercaria in the superficial muscles of Labeo rohita and Catla buchanani . . . . 316 (6) Carcinoma of the thyroid in Rainbow trout {Salmo irideus) from Naini Tal . . . . . • 3^7 (7) Description of a new species of Isopod Crustacean parasitic on the Bhekti {Lates calcarifer) . . 321 (8) Argulus foliaceus, Linn., from the skin of Labeo rohita . . . . . . • • 323 (9) Amphilina magna, n. sp., from the coelom of Dia-gramma crassispinum . . . . • . 326 (ID) Syndesmobothrium filicolle, Linton, parasitic in the flesh of Harpodon nehereus (''Bombay duck") from Diamond Harbour . , . . . . 329 (II) Disease in the eye of Holocentrum rubrum . . 33^ The following paper deals with a variety of fish diseases, all of which are — ^with two exceptions — caused by parasites. The "lice" which live on the skin of Bhekti are not more harmful than other lice which live on other animals. The '' lice " which are described from Rohu are, however, much more danger-ous than those found on Bhekti. In tanks and confined water-areas these parasites may cause great mortality amongst Rohu, and every fish in the tank may die. The larval Trematodes which five in the skin and flesh of a number of fish are of some importance. Heavy infection most probably interferes somewhat with normal growth, and it is not
BioStor
