102 MEMOIBS OF THE QUEENSLAND MUSEUM. 



l^. Cauda! fin slightly rounded : eleven anal rays . . . . . . . . carbo. 



l^. Caudal fin emarginate : eight to ten anal rays. 



m}. 46-50 series of scales bolovv the Interal 'ine . . . . . , fvliqinosus. 



ni-. 51 DO series oi scales below the lateral line . . . . . . . . bancrofti. 



il". Normally thirteen dorsal spines. 



n^. 6J-7i supralateral scales ; head larger, one third or more than one third of the length 

 to the hypural ; body with dark bands, and dark spotr ac base of caudal 



trimaculatua. 

 n-. 8-11 supralateral scales ; head smaller, less than one third of the length to the hypural ; 

 coloration nearly vmiform. 

 o^. Scales smaller, 58-67 below the lateral line and 63-71 above it . . . . hillii. 



0^. Scales larger, 49-56 below the lateral line and 51-61 above it . . . . parviceps. 



THERAPON THERAPS Cu\der & Valenciennes. 



Therapon therapa Cuvier & Valenciennes, Hist. Nat. I^iss., lii, 1829, p. 129, pi. liii ; Giinther, Brit, 

 Mus. Cat. Fish., i, 1859, p. 274 ; Day, Fish. India, 1878, p. 70, pi. xviii, fig. 6 ; Castelnau, 

 Proc. Zool. Soc. Vict., ii, 1873, p. 8f ; Alleyne & Macleay, Proc. Lmn. Soc. N. S. Wales, i, 

 1877, p. 270 ; Maeleay, Pioc. Linn. Soc. N. S. Wales, v, 1881, p. 3G0 ; Weber, " Siboga" 

 Exped., Ivii, 1913, p. 255, fig. 64 — color variations of young. 



Therapon obscurus Cuvier & Valenciennes, ibid., p. 135 ; Giinther, ibid., p. 275. 



Therapon scualidus Cuvier & Valenciennes, ibid., p. 136 ; Giinther, ibid. 



Therapon transversus Cuvier & Valenciennes, ibid., p. 137 ; Giinther, ibid. 



Therapon cmereus Cuvier & Valenciennes, ibid., p. 138 ; Giinther, ibid., p. 276. 



? Datnia virgata Cuvier & Valenciennes, ibid., vii, 18L1, p. 480. 



? Therapon Hrgatus Gunther, ibid., p. 276. 



? Therapon rubricatus Richardson, Ann. Mag. Nat. Hist., ix, 1842, p. 127. 



Therapon (Datnia) theraps Bleeker, Atlas Ichth., vii, 1876, p. Ill, pi. cccxxi, fig. 1. 



Therapon nigripinnis Macleay, ibid., p. 366. 



D. xii 10 ; A. iii 8-9 ; P. 14-15 ; V. i 5 ; C. 17. 56-59 series of scales between the 

 origin of the lateral line and the hjqjural joint, counted above the lateral line, and 49-50 

 below it ; 7-8 between the lateral Hne and the middle of the spinous dorsal. Cheek- 

 scales in 5-6 rows. 



Proportions of an Australian specimen 153 mm. long : — Depth 3-2 in the length 

 to the hy]oural joint ; head 3-5 in the same. Eye equal to the length of the snout, 

 3.5 in the head, and a little greater than the interorbital sj^ace wliich is 4-2 in the head. 

 Fourth dorsal spine 1-6, anterior dorsal ray 2-2, third anal spine 2-6, and anterior anal 

 ray 2-2 in the head. 



Body ovate, compressed. Upper surface of cranium closely covered with exposed, 

 arborescent bony ridges. Preorbital more or less serrated. Preoj)erculum evenly 

 denticulate, the teeth largest on the broadly rounded angle. Suprascapular and 

 coracoid bones strongly denticulate. Operculum with two spines, the lower produced 

 beyond the opercular lobe. Maxillary reacliing to beloAV the anterior portion of the' 

 eye. Nostrils large, with skinny, lobular margins ; they are separated by a space equal 

 to their own diameter. 



Dorsal spines strong, the fourth the longest and much higher than the rays ; 

 the last is much longer than the penultimate one : the margin of the soft dorsal is 

 straight and pointed posteriorly. Tliird anal spine longer than the second but shorter 

 than the anterior rays : margin of the soft anal a httle excavate, pointed posteriorly 

 Pectorals and ventrals pointed, the first ray of the latter with a short filament wliich 

 does not reach the vent. Caudal emarginate. 



Color-marking greatly developed in the voung, less distinct or wanting in 

 adults. Color more or less silvery in preservative with three broad, longitudinal, dark 



