1918.] T. Southwell & B. I^rasiiad : Indran Fish Parasites. - 351 



In all our forms we can distinguish the anterior sucker, and an ace- 

 tabulum lymg near he anterior end on the ventral surface. The ali- 

 mentary canal is bifurcate and ends blindly, posteriorly. No spines 

 are present. In one of the forms an excretory vesicle is to be seen 

 Fiom these characters it is obvious that all the forms beloni. to the 

 Distomidae. We append herewith a table showing the fish-h^sts. the 

 size of the parasites, and the situation where found. 



Saccobranchus foss lis, 

 Bloch. 



Ojihiocephaius miru- 

 lius, Ham. Buch. 



Ophiocephalus slriatus, 

 Bloch. 



Do. . 



Trichocjaster fasciatus, 

 BI. Schn. 



Lateral muscles 



Wall of intestine 



Lateral muscles 

 Do. 

 Do. 



0-5 mm. by 0-17 

 mm. (Fig. 2). 



1-2 mm. by 0-3 

 mm. (Figs. 3 

 and 3«). 



4-1 mm. by 1-7 

 mm. (Fig. 4). 



6-2 mm. by 3-6 

 mm. (Fig. 5). 



1-3 mm. by 0-6 

 mm. (Fig. 6). 



Beel Kola, Khulna, 

 Khulna district, 

 17th April, 1915. 



Do. 



Do. 



Do. 



Khulna market, 

 Khulna district, 

 16th April, 191.5. 



Literature cited — 



1. Cort, W. W.— Some North American larval Trematodes. 



Illinois Biological Monographs, Vol. I, No. 

 4. Urbana, Illinois, U. S. A., 1915 



2. Lebour, M. V.~A review of the British Marine Cercariae. 



Parasitology. Cambridge, 1912. 



3. Luhe, m.~Die Susswasser fauna Deutschlands. (I) Tremato- 



des. Jena, 1909. 



IV. NOTE ON DISCOCEPHALUM PILEAWM, LINTON. 



Our specimens of this tapeworm were collected from Carcharinus 

 W«^.c.. Mull, and Henle, collected in the Pusser river, Khulna. on 

 October 21st, 1917. 



We had 7 specimens. 



Length 17 cms. 



Number of proglottides in a specimen, counted— lOO 



Length of neck — 5-2 mm. 



Last proglottid — 

 Length — 5-2 mm. 

 Breadth — 2-1 mm. 



The specimens differed from Linton's in the following particulars •— 



1. Size. 



2. Absence of orange coloured bands. 



