1916.] 



Fauna of the Chilka Lake : Fish. 



411 



Family MYLIOBATIDAE. 

 Genus AETOBATIS, Blainville. 

 Aetobatis fiagellum (Schneider). 



1801. Raia fiagellum, Schneider, Blocli's Ichthyol., p. 361, pi. lxxiii. 



1841. Aetobatis fiagellum, Müller and Henle, Plagiost.. p. 180. 



1870. Aetobatis narinari, Günther, Cat. Fish. Brit. Mus., VIIT, p. 492. 



1878. Aetobatis narinari, Day, Fish. Ind., 743, pi. cxciv, fig 4. 



1889. Aetobatis narinari, Day, Faun. Brit. Ind., Fish., I, 59. 



1909. Aetobatis fiagellum, Annandale, Mem. Ind. Mus., II, p. 54, text-fig. 10, pi. iv, fig. 5. 



1913. Aetobatus fiagellum, Garman, Mem. Mus. Comp. Zool. (Harvard), XXXVI, p. 440. 



1914. Aetobatus fiagellum, Gudger, Pub. Cam. Inst. (Washington), CLXXXIII, p. 312. 



There is one female specimen in the collection secured by purchase at Barkul. 

 A large number of dead Aetobatis -fiagellum were seen lying on the Island of Nalbano 

 by Dr. Annandale in the month of March, 1914. A severed head of the species was 

 brought by Dr. Jenkins from the mouth of the Chilka Lake in December, 1909. In 

 the specimen from Barkul the snout is very long and tapers to a sharp point and is 

 much longer than broad. The eyes are lateral; their dorso- ventral axis is vertical 

 and forms a right angle with the upper surface of the head. The distance from 

 the mouth to vent is contained three times in the width of the disk. The teeth of the 

 lower jaw are strongly curved and the pointed end of the band is seen projecting 

 forward from the mouth. The skin is smooth and of a dark colour and there are no 

 spots. 



The measurements of the Barkul specimen are given below 



Breadth of disk 

 Mouth to - vent 

 Length of snout 

 Rostral fin 

 Diameter of eye 

 Interorbital space 

 Length of spiracle 

 Ventral fin 

 Tail 



; — ■ 





494 



mm 



165 



?» 



76 



»? 



. . 63 X 2 



a 



12*6 



M 



63 



i) 



25 



)î 



. . 76 X 28 



ïï 



• • 851 



) J 



The conclusions Dr. Annandale arrived at about this species in 1909 

 Ind. Mus., II, pp. 54-58) have been now widely accepted. 



Distribution : — Tropical and semitropical waters of the world. 



{Mem. 



1801 

 1803 

 1804 



1839 

 1849 



1865 

 1870 



Aetobatis guttata. (Bloch and Schneider). 



Raid guttata, Bloch and Schneider, Syst. Ichthy., pp. 361-364. 



Raja No. viii [Eel tenkee], Russell, Vizag. Fish., I, p. 5, pi- viii. 



Raia guttata, Shaw, Zool., V, p. 285. 



.Aetobatis indica, Swainson, Fish., II, p. 3. 



Stoadson narinari, Cantor, Cat. Mal. Fish., p. 1416. 



Aetobatis narinari, Day, Fish. Malab., p. 280. 



Aetobatis narinari, Günther, Cat. Fish. Brit. Mus., VIII, p. 493. 



