MCCULLOCH. 29 



102. Parapegasus Dumeril, Hist. Nat. Poiss. ii, 1870, p. 492 (natans). 



102a. P. natans. Regasus natans Linn., Syst. Nat. 12th ed. i, 1766, p. 418. 

 Parapegasus natans McCulloch, Biol. Res. Endeavour iii, 3, 1915, p. 110, 

 fig. 2 (PI. x). 

 Two specimens are in the Australian Museum from Lake Macquarie and Tug- 

 gerah Lakes. Length 5 inches. 



Garfish, Flying Fish, and Long Tom.— Order SYNENTOGNATHI. 

 Fins without spines. Ventral fins abdominal. Lateral line forming a raised 

 ridge along the lower surface of the body. 



A. Dorsal and anal fins followed by several detached finlets; both jaws produced 

 into a beak. Family Scomberesocidae (No. Ivii). 



AA. No detached finlets behind the dorsal and anal fins. 



B- Both jaws produced into a long toothed beak. Family Belonidae (No. lviii) . 

 BB. Jaws either equally short or only the lower jaw produced. 

 C. Jaws short, subequal; pectoral fins enlarged for flight. 



Family Exocoetidae (No. fix). 

 CC. Lower jaw more or less produced into a beak: pectoral fins usually short 



Family Hemirhamphidae (No. lx). 



LVII. Family Scomberesocidae. 



103. Scomberesox Lacep., H. N. Poiss. v, 1803, p. 344 (cam-peri). 



103a. S. forsteri. Bill-pish. Id. Cuv. & Val., H. N. Foiss. xviii, 1846, p. 

 481. Scombresox saurus var. forsteri McCoy, Prodr. Zool. Vict. dec. xiv, 

 1887, pi. 135, 2 (PI. ix). 

 A pelagic species occasionally occurring in shoals. Length 15 inches. 



LVIII. Family Belonidae. 



A. Bodv little compressed, its breadth more than two-thirda its greatest depth. 



Tylosurus (104). 

 AA. Body much compressed, its breadth less than half its greatest depth. 



Athlennes ( 105 1 . 



104. Tylosurus Cocco, Giorn. Sci. Lett. Sieilia xlii No. 24. 1833, p. 18 (can- 



train ii) . 

 A. Caudal peduncle as broad as deep. 



B. Anal with 25-26 rays. ferox (104ai. 



BB. Anal with 19-21 rays. macleayana (104b). 



AA. Caudal peduncle much deeper than broad. krefflii (104c » . 



104a. T. ferox. Slender Long Tom. Bclone ferox Gthr., Brit. Mus. Cat. 

 Fish, vi, 1866, p. 242. T. ferox Stead, Ed. Fish. N.S. Wales, 1908, p. 

 34, PI. 10. 

 A very voracious species, common on the coast. Length 3 feet. 



104b. T. macleayana. Stout Long Tom. Belone macleayana Ogilby, Cat. 

 Fish. N.S. Wales, 1886, p. 53. T. macleayana Stead, Ed. Fish.' N.S. 

 Wales. 1908. p. 35. pi. 10 (Fl. ix). 

 Abundant in estuaries and coastal waters. Length to 4 feet. 



104c. T. krepftii. Belone hrefftii Gthr., Brit. Mus. Cat. Fish, vi, 1866, p. 250. 

 A little known species which has been recorded from this State on unreliable 

 authority. 



