BY W. MACLEAY, F.L.S. 375 



Family IV. EAJID^E. 



Disk broad, rhombic, generally with asperities or spines ; tail 

 with a longitudinal fold on each side. The pectoral fins extend 

 to the snout. No electric organ. No serrated caudal spine. 



Genus Eaja, Cuv. 



Tail very distinct from the disk, which is of a rhombic shape, 

 with a fold on each side. Body generally rough or with spines, 

 rarely entirely smooth. Two dorsal fins on the tail, without 

 spine. Tail with a rudimentary caudal fin or without fin. Each 

 ventral fin divided into two by a deep notch. Nasal valves 

 separated in the middle, where they are without a free margin. 

 Teeth obtuse or pointed. Eectoral fins not extending forward 

 to the extremity of the snout. Sexes differing in the form of 

 the teeth and in the dermal spines. 



All Seas. 



1114. Raja Lampmbei, Eichards. 



Voy. Erebus and Terror, p. 43, pi. 23. — Gunth., Cat. Fishes 



VIII., p. 463. 



" Thorn Bach " of the Melbourne fishermen. 



Snout short and somewhat obtuse. The space between the 

 eyes is equal to the diameter of the eye. Teeth pointed. Outer 

 angle of pectoral fin rounded. The width of the body equals 

 the distance from the snout to the posterior base of the ventrals. 

 Spines on the superciliary edge, on the mesial line between the 

 head and the humeral cartilage, and a row beginning at the 

 pelvis runs down the middle of the tail, directed alternately to 

 right and left. There are also a few scattered spines, but these 

 like all the other spines vary considerably in size. Colour 

 greyish- brown, tip of the snout black. 



Tasmania, Fort Phillip. 



