Gobius. — 1st 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 rays. 



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 fins 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 



F 



