MCCULLOCH. 57 



160a. 0. macqdariensis. Murrai Cod. Grystes macquariensis Cuv. & 

 Val.. H.X. Poiss. iii, 1S20, p. 58. 0. macquariensis McCoy Prodr. 

 Zool. Vict. Dec.ix. 1884, pi. 85-86 (PI. xviii). 

 A mosi valuable foodtish, inhabiting the Murray River system and the head 

 waters of some northern streams. It varies considerably in form and colour- 

 marking, and one variety with trout-like marking's and an overhanging upper jaw 

 lias been regarded as a distinct species under the name of Trout Cod, Oligorm 

 mitchelli Castelnau. Length tu 5 feet. 



107. Percalates Ramsay & Ogilby, P.L.S.N.S.W. (2) ii, 1887, p. 182 

 (colonorum) . 

 167a. P. colonorum. Australian Pbrch. Lates colonorum Gthr., A.M.N.H. 



(3) xi, 1863, p. 114. Hides novemaculeatw Steindachner, Sitzb. Akad. 



Wiss. Wien liii.i, 1866, p. 5, pi. 2, 1 (PI. xviii). 

 Another important food-fish, inhabiting the coastal rivers and descending to 

 the salt-water estuaries. Its variations in form and colour have led to the sup- 

 position that there is more than one species, but deeper bodied estuarine specimens 

 are linked up with the more slender fresh-water examples by a chain of inter- 

 mediate forms. Length 20 inches. 



168. Pi.ECTROPUTr.s Gill, P. Ac. Nat. Sci. Philad., 1862, p. 236 (ambiguus) . 

 168a. P. ambiguus. Golden Perch. Datnia ambiguua Richardson, Ichth. 



Erebus & Terror, 184"). p. 25, pi. 19. Ctenolates ambiguus McCoy, 

 Prodr. Zool. Vict. Pec. ix. 1884, pi. 84 (PL xviii). 

 Another very valuable food-fish, occurring abundantly in the western river 

 system. Length 2 feet. 



169. Macquaria Cuv. & Val., H.N. Poiss. v, 1830, p. 377 (australasica) . 

 169a. M. australasica. Macquarik Perch. Id. Cuv. and Val., Tom. cit., 



pi. 131; Id. Lesson, Voy. Coquille, Zool. ii, 1826. p. 194, pi. 14, 1 (PL 



xviii) . 

 Abundant in some western waters, and occurring in a few coastal streams also. 

 Length 15 inches. 



170. Therapon Cuvier (Terapon in error), Reg. Anim. ii, 1817, p. 295 (ser- 



vus) . 



A. Lower opercular spine produced beyond opercular lobe; a dark blotch on the 



spinous dorsal. servus (170a). 



AA. Lower opercular spine not produced beyond opercular lobe; no dark blotch 



on the spinous dorsal. 



B. Suprascapular bone not exposed, hidden by scales. unicolor (170b) . 



BB. Suprascapular bone exposed, not hidden by scales. bidyana (170c). 



170a. T. servus. Holocentrus servus Bloch, Ausl. Fisehe iv, 1790, p. 80, 

 pi. 238, 1; T. jarbua Day, Pish. India, 1875, p. 69, pi. 18, 4 (PI. xix) . 

 A tropical marine species occasionally wandering into New South Wales 

 waters. Length 8 inches. 



170b. T. unicolor. Spangled Grunter. Id. Gunther, Brit. Mus. Cat. 

 Fish, i, 1859, p. 277; Id. Ogil. & McCulL, Mem. Qld. Mus. v, 1916, p. 

 109, pi. 11, 1 (PL xix). 

 A small species occurring in the western rivers of New South Wales . 



