MCCULLOCH. 



35 



LXVIII. Family Trachiptebidae. 



126. Trachipterus Gouan, Hist Pise, 1770, p. 104 (gouani). 



126a. T. jacksonensis. Ribbon* Fish. Regalaecus jacksonensis Ramsay, 

 P.L.S.N.S.W. v, 1881, p. 631, pi. 20 (PI. xi). 

 A very rare species, the type of which is 6 feet long. A young example 

 ahout six inches long, which was picked up on a beach at Newcastle, has been 

 called T. jacksoniensis polystictus by Ogilby, P.L.S.N.S.W. xxii. 1808, p. 649. 



Flounders and Soles.— Order HETEROSOMATA. 

 Flat asymmetrical fishes, having both eyes on the one side, which is coloured, 

 while the blind side is normally white. 



A. Margin of the preoperculum free. 



B. Eyes on the left side. Family Bolhidae (Xo. lxix) . 

 BB. Eyes on the right side. Family Pleuroiiectidae (Xo. lxx) . 



AA. Margin of the preoperculum not free. t 



C. Eyes on the right side. Family Soleidue (No. lxxi). 

 CC. Eyes on the left side. Family Cynoglossidae (Xo. lxxii) . 



LXIX. Family Bothidae. 



A. Ventral fins symmetrical and opposite one another on each side of the ab- 

 dominal ridge. Pseudorhonibus (127). 

 AA- Ventral fins unsymmetrical, the left largest and placed on the abdominal ridge. 

 B. Eyes separated by a narrow bony ridge. 



C. Some anterior dorsal rays produced into filaments. Lophonectes (12S). 



CC. X T o anterior filamentous dorsal rays. Laeops (129). 



BB. Eyes separated by a broad scaly interspace. P/atoplitys ( 130 » . 



127. Pseudorhombus Bleeker, Versl. Akad. Amsterdam xiii, 1862, p. 426 (poty- 



spilos). 



A. Eye separated by a rather broad interspace from the dorsal profile which is not 



notched on the snout . arsius ( 127a I . 



AA. 'Only a narrow space separating the eye from the dorsal profile which is notched 



on the snout. 



B. Scales of upper surface ctenoid. mnltimaculatus ( 127b I . 



BB. Scales of upper surface cycloid. tenuirastrum ( 127c I . 



127a. P. arsius. Large-toothed Flounder. Pleuroneetes arsius Buch., Fish. 

 Ganges, 1822, p. 128. P. russelli Blkr., Atlas. Ichth. vi, 1870, p. 6, pi. 

 233, 2 (PI. xiii). 

 One of the commonest of our Flat-fishes, and of fine edible quality. Length 

 about 15 inches. 



127b. P. multii'aculatus. Small-toothed Flouxder. Id. Gthr., Brit. Mus. 

 Cat. Fish, iv, 1802, p. 427. Id. McCulloch, Biol. Res. Endeavour ii. 3, 

 1914. p. 131. pi. 24 (PI. xiii). 

 Commonly confused with the preceding species. Length 16 inches. 



127c. P. texuirastruii. Deep-water Flouxder. Paraliehthiis tenuirastrum 

 Waite, Mem. Austr. Mus. iv. 1, 1899, p. 121, pi. 28. 

 Taken by trawlers in moderately deep water. Length 11 inches. 



128. Lophoxectes Gthr., Challenger Zool. i, 1880, p. 28 {galhis). 



128a. L. gallus. Crested Flouxder. Id. Gthr., Tom. cit., p. 29, pi. 15. b 

 (PI. xiii.) 

 Plentiful in deep water but of small sue. Length about 8 inches. 



