456 



Memoirs of the Indian Museum. 



[Vol. V, 



' 



Lake Biwa, 

 Japan. 



Shanghai. 



Chilka Collection. 





A. 



B. 



Rambha Bay. 



Nalbano „ , , t, • , 

 T , , Barkul Point. 

 Island. 



Number of rays in 

 the anal fin 



18 



20 



19 



22 



18 



21 



Number of scales 

 along the lateral 













- 



line 



31 



30 



31 



30 



29 



30 



Number of scales 

 along the mid- 

 transverse line. 



9 



9 



9 



9 



9 



9 



Length of head . . 



6 mm. 



5 mm. 



5 mm. 



7 mm. 



6 mm. 



5 mm. 



Depth of body . . 



5-5 mm. 



4'5 mm. 



4-5 mm. 



7 mm. 



5 "5 mm. 



4 - 7 mm. 



Number of scales 

 above the pecto- 

 ral fin 



4 



3 



4 



4 



4 



4 



Number of scales 

 below the pec- 

 toral fin. 



7 



6 



7 



1 



7 



7 



7 



The proportion between the length of the head and the depth of the fish varies 

 slightly according to sex, as well as in individuals during the breeding season and 

 also owing to other causes ; no very great value, therefore, should be attached to slight 

 differences in the depth. Jordan and Snyder appear to have ignored the generic cha- 

 racter of Aplocheilus (s. s.) in instituting their genus and do not allude to the fact that 

 in A. javanicus, Bleeker, the anal fin is even longer than in the specimens of the 

 species they examined, having twenty-five rays. 



The species occurs all round the edge of the lake including the outer channel. 

 It is a permanent inhabitant and breeds freely in the lake. 



Distribution: — Madras, Orissa, Bengal, Burma, the Kiangsu Province of China, 

 Formosa, Korea and Japan. 



Suborder OATOSTEOMI. 



Family SYNGNATHIDAE. 



Genus ICHTHYOCAMPUS, Kaup. 



Ichthyocampus carce (Hamilton Buchanan). 



1822. Syngnathus carce, Hamilton Buchanan, Fish Gang., pp. 13 and 362. 



1832. Syngnathus carce, Gray, Illust. Ind. Zool. Hardwicke, I, pi. lxxxi, fig. 1. 



i853- Syngnathus carce, Bleeker, Nalez. Ichth. Faun. Beng. Hindost., p. 161. 



1856. Ichthyocampus carce, Kaup, Cat. Lophob. Fish Brit. Mus., p. 30. 



