10 FISH AXD FISH-LIKE AXIJIALS OF X.S.W., 



XYIII. Family Pristidae. 



28. Pristis Linck, Mag. Neue Phys. Naturg. vi., 1790, p. 31 (pristis). 

 28a. P. zysron. Sawfish. Id. Bleeker, Verb. Bat. Gen. xxiv, 1851, p. 55; 



Id. Day, Pish. India. 1878. p. 729, pi. 191, 2. (PI. ii.). 

 Grows to 20 feet long, and is much dreaded because of fearful injuries it in- 

 flicts with lateral strokes of its powerful "saw." It is widely distributed, and is 

 occasionally taken in estuaries on our coast. 



XIX. Family Rhixobatidae. 



A. Dorsal opposite the ventrals. a subcaudal lobe; body ornate. Rhynchobatus (29). 



AA. Dorsal behind the yentrals; no subeaudal lobe. 



B. Snout long, sharply-pointed and shoyel-shaped; body plain coloured. 



Rhinobatos (30). 



BB. Snout shorter, obtuse; body ornate. Trygonorrhina (31). 



29. Rhyxchobatus Mull. & Henle, Arch. Naturg. iii. 1. 1837, p. 399 (laevis). 

 29a. R. djiddexsis. White-spotted Ray. Raja djiddensis Forskal. Descr. 



Anim., 1775, p. 18; R. djeddensis Day, Fish. India. 1878, p. 730, pi. 192. 

 1. (PI. ii ). 

 Grows to seyen feet long, and is said to be not uncommon. 



30. Rhinobatos Linck. Mag. Neustes Physik. Naturg., 1790, p. 32 (rhinobatos). 

 30a. R. baxk-<ii. Shovel-xo.sed Ray. Id. Mull. & Henle, Plagiost., 1838, 



p. 123; Id. Waite, Mem. Austr. Mus. iv. 1, 1899, p. 38, pi. 3. (PI. ii.). 

 A common species growing to four feet in length. 



31. Trygonorrhixa Mull & Henle, Mag. Xat. Hist. (2) ii, 1838, p. 90 (fas- 



ciata. ) . 

 31a. T. PASCIATA. Fiddler. Id. Mull. & Henle, Lor. at., pi. 43. (PI. ii.). 

 Common, and reaching a length of four feet. 



XX. Family Narcobatidae. 



A. Tail shorter than the disc. 



B. Caudal fin large, disc broader than long. Nacobatns (32). 



BB. Caudal fin small; disc as long as broad. Hypnarce (33). 



AA- Tail longer than the disc. Narcine (34). 



32. Narcobatcs Rlainy., Bull. Soc. Philom. 1816. p. 121 {torpedo). 



32a. N. fairciiildi. Electric Ray. Torpedo fairchildi Button, Cat. Fish. 



X. Zeal.. 1872, p. 83. pi. 12. fig. 134: Id. McCul., Rec. Aust. Mus. xii. 



8, 1919. p. 171, pi. xxy. (PI. iii.). 

 One specimen twenty-eight inches long taken in deep water by the State 

 trawlers. 



33. Hypxarce Waite, Rec. Austr. Mus. iv. 5. 1902, p. 180 (subnigra). 



33a. H. subnigra. Numbfish. Id. Dumeril, Rey. Mag. Zool. (2) iv, 1852, 

 p. 279, pi. 12. (PI. iii.). 



Not uncommon, and grows to oyer two feet long. The electric discharge giyen 

 off 1 iv this Ray is very powerful, and serves to paralyse its prey as well as to 

 scare off its enemies. 



