378 DESCRIPTIVE CATALOGUE OF AUSTRALIAN FISHES, 



" The Sting Ray." 



Tail with a distinct cutaneous fold below, and a slight ridge 

 above, about one-half longer than the disk or less. The margins 

 of the snout form an obtuse angle. Body smooth, sometimes a 

 few small tubercles pointing backwards, in the median line of 

 the scapulary region. Three appendages at the bottom of the 

 mouth, behind the teeth. Coloration uniform, or sometimes 

 with small round, scattered whitish, non-ocellated spots. 



Port Darwin, Port Jackson. 



1119. Trygon tuberculata, Lacep. 



Dumeril. Elasmobr., p. 605. — Gunth., Cat. Pishes VIII., p. 480. 



Tail with a distinct fold below, a very low upper fold being as 

 frequently absent as present. The tail is more than twice the 

 length of the disk. Snout pointed and rather produced. A 

 series of spinous tubercles, each pointing backwards at the tip. 

 runs from the scapulary region to the caudal spine ; older 

 individuals having the back of the head and trunk more or less 

 covered with small tubercles. Minute tubercles on the tail. 

 Three papillae at the bottom of the mouth behind the teeth. 

 Dental lamina) much undulated. Coloration uniform, almost 

 black. Length of disk two feet. 



Port Jackson. 



Genus Urolopiius, Mull. & Henle. 



Tail of moderate length with a distinct rayed terminal fin, 

 armed with a serrated spine, without or with a rudimentary 

 dorsal fin. Pectoral fins united in front. Mouth and teeth as 

 in Trygon. 



Australia and West Indies. 



1120. Urolophus cruciatus, Lacep. 

 Dumeril, Elasmobr., p. 626.— Gunth., Cat. Pishes, VIII., p. 485. 



