744 



Memoirs of the Indian Museum. 



[Vol. V, 



Ctenogobius chilkensis (Jenkins). 

 1910. Gobius chilkensis, Jenkins, Rec. Ind. Mus. V, p. 137, pi. vi, fig. 2. 

 There are eighty specimens of this species in the Chilka Survey Collection. Most of 

 them were obtained from the neighbourhood of Nalbano Island. The largest is 35 mm. in 

 length. 



This species is only known from the Chilka Lake. Jenkins obtained his specimens 

 from near Gopkuda Island. 



Ctenogobius alcocki (Annandale). 

 1906. Gobius alcochii, Annandale, Journ. As. Soc. Bengal, (n.s.) II, p. 201, fig. 1. 

 This small Gobiid fish was first described from Port Canning and Calcutta by Annandale. 

 It is very common all over the Chilka Lake and is represented by a large number of speci- 

 mens. There are six spines in the first dorsal fin instead of five, the number given in Annan- 

 dale's description and figure. A large number of individuals was netted near Barku 

 and specimens were also collected at various other localities in the Lake. 



Ctenogobius globiceps, sp. no v. 



D. VI|1/11. A. 1/10. 

 In this new species the body is somewhat compressed from side to side, and the head is 

 almost globular. The dorsal profile is straight and horizontal ; the ventral rises towards 

 both ends from below the middle of the base of the pectoral fin. The head is almost as high 

 as the greatest depth of the body and its length is contained 4 times in the length without 

 the caudal fin. The eyes are big and are situated near the dorsal surface ; they are hardly 

 visible from below. The diameter of the eye is contained 3-3 times in the length of the 

 head. The snout is short and rounded. The anterior pair of nostrils are tubular and are 

 separated from the posterior pair by a short distance. The mouth is small and oblique ; 

 the maxilla reaches to below the anterior J of the orbit. The sides of the head are covered 

 by a a large number of mucous glands, which are arranged in definite rows. 



Text-fig. 24. — Ctenogobius globiceps, sp. nov. : x 4. 



The anterior dorsal commences immediately above the origin of the pectoral fin and 

 contains six spines ; its commencement is almost equidistant from the anterior origin of 

 the second dorsal and the posterior margin of the orbit. The second dorsal is composed of 

 one spine and eleven rays ; its anterior origin is midway between the base of the caudal 

 and the tip of the snout. The ninth branched ray is the longest and its length is greater 

 than the greatest depth of the body. The pectoral fin is as long as the ventral and is slightly 

 shorter than the head. The anal fin is long and originates behind the commencement of 



