1923.] 



Fauna of the Chilka Lake : Fish. 



745 



the second dorsal. The penultimate ray is the longest and is longer than the longest ray 

 of the second dorsal. The caudal fin is sharp and pointed in the middle ; its length is con- 

 tained 2-5 times in the length of the fish with the caudal. 



The teeth are small and conical and there are several rows 

 of them both in the upper and the lower jaw ; those of the 

 outer rows are slightly the longer. The tongue is slightly 

 emarginated. 



There are 26 to 27 scales along the lateral line and 5f series 

 of longitudinal scales between the anterior origin of the second 

 dorsal and the anal fins. The scales are feebly ctenoid. 



In spirit the colour is yellowish with 4 or 5 short vertical 

 black bands on the sides of the body. There are a few small 

 black spots on the body above the lateral line. The pelvic 

 fins are blackish, while the others are slightly dusky. There 

 is a white band marking off the tip of the second dorsal fin and 

 obliquely continued on the upper half of the caudal fin. The 

 colour pattern is, on the whole, very characteristic of the 

 species. 



This species is widely distributed in the Chilka Lake and a large number of specimens 

 were obtained from the following localities : — 



Off Samal I. ; Eambha Bay ; Satpara ; between Cherriakuda and the mainland ; 

 Serua Nadi ; Mahosa, Barhampur Island ; off Balugaon ; off Nalbano ; off 

 Barkul bungalow ; South of Kalidai. 



Text-fig. 25. — Tooth-bands and 

 tongue of Ctenogobius globiceps, 

 sp. nov. : x 20. 



Ctenogobius cylindriceps, sp. nov. 

 D. VIjl/9. A. 1/9. 



The new species is very common in the Chilka Lake and is represented by a large number 

 of specimens in the collection. It does not grow to more than an inch and a half in length. 

 The dorsal profile is almost straight or slopes gradually down to the base of the caudal fin 

 from the anterior origin of the first dorsal. The head is sub -cylindrical and the body some- 

 what flattened from side to side. The length of the head is contained 3-7 times in the total 



Text-fig. 26. — Ctenogobius cylindriceps, sp. nov. : x 4. 



length without the caudal and its height at the occiput is almost equal to the greatest 

 height of the body. The eyes are situated near the dorsal surface and are not visible from 

 below ; their diameter is slightly greater than the length of the snout and is contained 



about 33 times in the length of the head. 



F 2 



