120 ' ENDEAVOUR " SCIENTIFIC RESULTS. 



A MI A QUADRIFASCIATA, Cuvier & Valenciennes. 



Apogon quadrifasciatus, Cuvier & Valenciennes, Hist. 



Nat. Poiss., ii., 1828, p. 153. Id., Gunther, Brit. Mus. 



Cat. Fish., i., 1859, p. 239. Id., Kner, Reise "Novara," 



Fische, 1865, p. 43. Id., Weber, " Siboga " Exped., 



Ivii., 1913, p. 226. 

 Amia quadrifasciata, Bleeker, Atlas Ichth., vii., 1873-6, p. 



88, pi. cccxxxv., fig. 1. 

 Apogon kiensis, Jordan & Snyder, Proc. U.S. Nat. Mus., 



xxiii., 1901, p. 905, fig. 9. 

 Apogon monogram-ma-, " Challenger " Rept., Zool., i., 1880, 



p. 38, pi. xvi., fig. B. 



An excellent series of sixty-six specimens, 47-115 mm. long, 

 shows that the colour marking of this species is very constant, 

 though the bands are broader and darker in the young ; there 

 is usually an indefinite secondary band between the two prin- 

 cipal ones anteriorly in smaller specimens. None have the 

 first dorsal partially black, as described by Gunther, though 

 the margin is grey in some. 



The depth of the body increases considerably with age, it 

 being 3-2.5 in the length in specimens 55 and 115 mm. long. 

 The anterior dorsal spine is also wanting in the young, it 

 being first developed in specimens about 60 mm. long ; 

 occasionally an extra spine is present between the two dorsal 

 fins, so that the number varies from six to eight. 



The " Endeavour " series is so complete that I am con- 

 vinced that these differences are only due to variation with 

 growth. Jordan and Snyder 's figure of A. kiensis represents 

 the younger stage, while that of Bleeker illustrates the adult. 

 A. monogramma, Gunther, is also evidently synonymous with 

 A. quadrifasciata ; only one lateral band is mentioned in its 

 description, but the figure shows two, and some specimens in 

 my series tally very well with the illustration. 



Locs. Off Moreton Island, Queensland, 8-15 fathoms ; 

 August 31st, 1910. 



South-east of Double Island Point, Queensland, 33 fathoms ; 

 June 28th, 1910. 



Off Frazer Island, Queensland, 14-16 fathoms ; 29th 

 July, 1910. 



Platypus and Harvey Bays, Queensland, 7-10 fathoms ; 

 28th July, 1910. 



Near Gloucester Head, Queensland, 19-35 fathoms ; August 

 2nd, 1910. 



A single specimen is in the Australian Museum from 

 Mosman Bay, Port Jackson. 



