Gobio. INDIAN CYPRINIDZ. 353 
The Mrigala is most esteemed during the rainy season in Bengal, by 
Europeans at least ; the usual size at which it is taken is from eighteen inches 
to two feet in length, when smaller the flesh is bony, and when larger it 
becomes coarse, and loses flavour. Its form is seemly, and the colours ex- 
tremely rich, but undefined, generally consisting of dark green along the back, 
but sometimes brown, or both intermixed, with a gold-yellow iridescence on 
the sides : it is one of those species which might be propagated with advan- 
tage wherever a sufficiency of fresh water occurs. The Rewah I consider 
to be nothing more than the young Mrigala; I have not however found 
it any where but at Calcutta, and there are some interesting differences 
both in the disposition of the intestines, and the form of the air vessel in the 
two kinds, which deserve to be pointed out whether we regard those differ- 
ences as constituting distinct species, or as elucidating the progessive stages 
of development in the same individual. In the M7zga/a the anterior cell of the 
air vessel is large, constituting almost nine-tenths of the organ; in the Rewah 
the posterior cell is larger than the anterior. In the M77gala the intestines are 
convoluted in longitudinal folds; in the Rewah the folds of the intestine are 
disposed obliquely across the abdomen, but the proportionate length of the 
alimentary canal to the size of the body is the same in both. The scales in 
both are of the same form, but the structure is somewhat different. 
II].—Cyrprinus curmuca, Buch. 
Journ. Mysore, V.11, t.30. 
This species is placed by Buchanan amongst his true Cyprinus, but from 
his figure, as well as his description, I am inclined to consider it as belonging 
to this place, although he says the jaws are protractile, a character which is not 
common in the Gudgeons, and which will require to be particularly inquired 
into hereafter. I am aware that to describe two different species under one name, 
is more calculated to create confusion than giving a new name to a species 
Non 
