INDIAN CYPRINID^. 311 



Fig. 12. Stomach and intestine of the Systoms ; fig. 13, of the Perilamps ; 



fig. 14, of the Leuciscs ; and fig. 15, of the Opsarions. In this last 

 genus the alimentary canal is merely divided into stomach and cloaca. 



Fig. 16. Stomach and intestine Platycara maculata ; fig. 17, stomach and 

 intestine in the genus Cobiiis propria ; fig. 18, the same in Schistura. 



Fig. 19- Perilampus thermophilus, J. M. The caudal fin in the only two 

 specimens I received is imperfect. 



PLATE XXXVII. 



Fig. 1. Catastomus dyocJieilus, J . M. Goreah of the Assamese; about one- 

 fifth of the natural size. 



Fig. 2. Oijiprinus semiplottis, J. M. Senturee of the Assamese ; with a figure of 

 the head, natural size. 



PLATE XXXVIII. 



Fig. 1. Cyp. virigala, Buch. One-fifth the natural size, from a living specimen 

 in Assam. This is one of the species figured by Buchanan, Pise. Gang. 

 t. 6, 79, but there is such a want of character in the figure alluded 

 to that I am induced to submit another, the accuracy of which may 

 be put to the test in any of our fish markets in Bengal. 



Fig. 2 /3, Cijp. cursa, Buch. This figure is taken from Buchanan's Collection. 



Fig. 3. Cyp. cursis, Buch. Drawn half size from a dried specimen. I after- 

 wards found a far better figure of this species in Buchanan's 

 collection. It is very nearly allied to Cyj). cursa, fig. 2 ; — both are 

 distinguished by their small scales and the flesh being full of small 

 bones. Fig. 4 is the air vessel, the anterior cell of which is double. 



