of the genus Hydrargyra* 417 



received its name from the transverse bands with which it 

 was ornamented. I would follow the example of the dis- 

 tinguished naturalist who has preceded me m the genus, 

 in selecting a name for this species. 



Hydrargyra trifasciata. 



Four longitudinal bands on each side of the bodj, and 

 three transverse bands between the termination of the 

 longitudinal bands and the base of the tail. 



The upper part of the body is of a yellowish green : 

 on each side, are four dark colored bands running almost 

 the entire length of the fish : the first of these, is high on 

 the back ; the second passes from the upper edge of the 

 operculum, in a direct line to its termination ; the remain- 

 ing two, commencing back of the pectoral fin, run ob- 

 liquely upwards and backwards to a point on a line with 

 the centre of the ventral fin, then turn gently down, and 

 are continued parallel with the other two bands. 



At the base of the tail, are three transverse bands of a 

 similar color. All the under portion of the body, is of a 

 brilliant yellow. 



Snout elongated — lower jaw straight. 



Length of specimen five inches five lines : thickness^ 

 seven and a half lines : depth^ one inch one and a half lines. 



P 18. D 14. V 6. A 12. C 18. 



This fish was taken with other species of the genus in 

 the marshes of this vicinity. 



Since reading, a few months since, a paper on the Cata- 

 logue of the Fishes of Massachusetts, the following have 

 been met with, not mentioned in that Catalogue, which 

 are now contained in our Cabinet. 



VOL. 1. PART IV. 54 



