BY W. MACLEAY, F.L.S. 381 



Genus Aetobatis, Mull. & Henle. 



Form of the head, body and tail as in Myliobatis. The nasal 

 flaps remain separate, each forming a long flap. The lower 

 dental lamina projects beyond the upper. Teeth flat, broad, 

 forming a single series, equivalent to the median series of 

 Myliobatis, there being no small lateral teeth. 



Tropical Seas. 



1125. Aetobatis narixari, Cuv. 



Mull. & Henle, p. 179.— Dum., Elasm. p. 641.— Gunth., Cat. 



Fishes VIII., p. 492. 



Body smooth. Dorsal fin situated between the ventrals. Disk 

 generally with numerous round bluish white spots. The teeth 

 of the lower jaw are sometimes angularly bent, sometimes nearly 

 straight. 



Cape York. 



Genus Ceratoptera, Mull. & Henle. 



Head free from the pectoral fin, truncated in front, on each 

 side with a horn-like appendage pointing forward or inward, 

 which is a cephalic portion of the pectoral fin. Mouth anterior, 

 wide. Teeth in the lower jaw only, very small. Tail very 

 slender, with a dorsal fin between the ventrals and without spine. 



Tropical and Temperate Seas. 



1126. Ceratoptera Alfredi, Krefft. 



This is the name affixed to a stuffed specimen of this genus of 

 enormous size, in the Australian Museum. It was captured 

 at Manly Beach in 1868, and was considered by Mr. Krefft a 

 new and undescribed species, but unfortunately he never described 

 it, and description is now impossible, so much painting and putty- 

 ing and clipping have been practised in setting up the specimen. 



