﻿Gobius. — \st Div. gangetic fishes. 41 



sides of the upper lip. The eyes are rather small and globu- 

 lar, but do not project from the head : their pupils are circular. 

 Each of the gill-covers consists of two plates : their membranes 

 contain three raj's. 



The tail is wedge-shaped. There are no scales. 



The dorsal fins are slightly united. The first is no higher 

 than the second, and is rounded : its rays are undivided, and 

 bent back at their ends ; those of the second are, split into two, 

 and recurved at the ends, the last being divided to the root. 

 The pectoral ^ns, are near the middle, and each contains twenty- 

 one rays. The ventral fin forms a kind of oblique hood, is 

 oval, and ends in a sharp point. The rays of the anal fin are 

 recurved, and the last is divided to the root. The tail fin con- 

 tains about twenty-two rays, some of which on each side are 

 very short. 



2d Species. — Gobius changua. Plate V. Fig. 10. 



A gobius with an eel-like body, with five rays in the first, and 

 thirty-one in the second back fin, and with twenty-nine in that 

 behind the vent. 



This species is found in the estuaries of the Ganges. 



The body is slippery, above of an olive colour^ clouded with 

 black dots, and beneath white. The tail fin is beautifully 

 spotted with black. The eyes are white. 



The head is devoid of scales. Both lips are fleshy : the up- 

 per one, on each side, has a sharp projection, perhaps the nos- 

 trils ? The teeth are straight, and rather blunt. The tongue is 

 blunt and smooth. The eyes are small and protuberant, and 

 approach close to each other : their pupils are circular. The 

 gill-covers are simple ; each of their membranes contains four 

 rays. 



The tail ends in a rounded wedge. The gill-covers and 



