LIST OF FISH. 127 



2. ^TOPLATEA. 



Like Ptcroplatea, with a back-fin before the spine. 

 jEloplatea, Valenc. in Mull. 8f Henle, Plag. 175. 



1. iETOPLATEA TENTACULATA. 



iEtoplatea tentaculata, Mull. Sf Henle, Plag. 175. 

 Hab. — India, Red Sea. 



6. The roots of the breast-fins loose ; their rays wholly on the side 

 of the head, but the rays are again developed before the head, and 

 form a kind of head-fin which constitutes the point of the disk. The 

 head thereby projects from the disk up to the region of the gills ; 

 and it is more boldly arched than in the other families. The nasal- 

 flaps of both sides are tied to a four-sided lobe, which is fringed on 

 its under border, and reaches to the mouth. The nostrils stand 

 close together in the middle, and are separated only by a thin fillet 

 which passes over the dorsal surface of the nasal-flap from both 

 angles of the mouth, and is gently pointed in the middle. Mouth 

 transverse. The dental surface of the jaws extends far into the 

 cavity of the mouth. Teeth large, mosaic-like, even pavement-like. 

 The upper velum spriugs from the gums and cheeks, is very long, 

 with a convex border, and is fringed in the middle. The under ve- 

 lum lies close to the dental border. Only one papilla behind the 

 same. Eyes and spout-holes in the lateral edges of the skull. 

 Spout-holes separated from the eyes by a broad bridge. Eyelids 

 wanting. Tail long, whip-formed, with a back-fin on its root and a 

 spine behind the same. — Myliobatina. 



Myliobatis, Mull. §• Henle, Mag. Nat. Hist. ii. 90, 1838. 



Myliobatides, Miill. $• Henle, Plag. 176. 



Leiobatus, Rafin. Caratt. 1810. 



jEtobatus aut R. aquilas, Blainv. Bull. Soc. Phil. 121, 1816. 



Pterocephalina3, Swains. Cab. C'gcl. ii. 319. 



1. MYLIOBATIS. 



Snout pointed through the united foremost rays of the breast-fin. 

 The edge of the conjoined nasal-flaps is straight. Mouth trans- 

 verse. Both jaws with a straight border. Teeth six-cornered, 



