FISHES. MCCULLOCH. 171 



Key to the Australian species. 



a. Tail short, its length less than its distance from the mouth. 



Urolophtjs. 

 h. Back Avith dark transverse and longitudinal markings. 



cruciatiis. 

 hh. Back nearly uniform. avrantiacus 



aa. Tail longer than its distance from the mouth. 



Trygonoptera 

 c. Internasal valve with a broad fringe on its posterior 

 margin. Nostrils with broad lobes posteriorly. 

 d. Tail without lateral folds. testaceus. 



cc. Posterior margin of the internasal valve with a 

 narrow fringe or lobules. Nostrils without broad 

 posterior lobes. 



e. Papillae behind lower jaw fewer, widely spaced. 

 /. Disc shghtly broader than long, back uni- 

 formly coloured. viridis 

 ff. Disc much broader than long, back with 

 darker cross-bars. expansus 

 ee. Papillae behind lower jaw numerous, close 

 together. Back white speckled. bucciUentus 



Urolophus cruciattjs, Lacepede. 



Banded Stingaree. 



Raja cruciata, Lacepede, Ann. Mus. d'Hist. Nat., iv., 1804, 

 pp. 201, 210, pi. Iv., fig. 2. 



Leiobatus cruciatus, Blainville, Bull. Soc. Philom., 1816, 

 p. 121. 



Urolophus epMppiatus, Richardson, Voy. " Erebus and 

 Terror," Fishes, 1845, p. 35, pi. xxiv. 



Urolophus cruciatus, Giinther, Brit. Mus. Cat. Fish., viii. 

 1870, p. 485 ; Id., Dumeril, Hist. Nat. Poiss., i. 2 

 1865, p. 626 ; Id., Macleay, Proc. Linn. Soc. N. S 

 Wales, vi., 1881, p. 378 ; Id., Johnston, Proc. Roy 

 Soc. Tasm., 1882 (1883), p. 141, and 1890 (1891), p 

 39 ; Id., McCulloch, Zool. Res. " Endeavour," i., pt 

 1, 1911, p. 14 ; Id., Garman, Mem. Mus. Comp. Zool. 

 xxxvi., 1913, p. 408. 



I have carefully compared twenty-two specimens of this 

 species with numerous U. aurantiacus of similar size, and 

 fail to find any differences between them other than colour- 

 marking. The dark bands and spots of U. cruciatus are very 

 constant, however, being similarly disposed in all my speci- 

 mens, though somewhat variable in degree of development. 



