FISHES. — MCCULLOCH. 103 



Family CHEILODIPTERID^E. 



Genus Ami A, Gronow. 



Amia conspeksa, Klunzinger. 



Apogon conspersus, Klunzinger, Arch. Nat., xxxviii.i,, 1872, 

 p. 18, and Sitzb. Akad. Wiss. Wien, lxxx.i., 1879, p. 344, 

 pi. iii., fig. 2. Id., Steiudachner, Sitzb. Akad. Wiss. 

 Wien, lxxxviii.i., 1883 (1884), p. 1066, pi. i., fig. 1, la. 

 Id,, Macleay, Proc. Linn. Soc. N.S. Wales, ix., 1884, 

 p. 8. 



Vincentia waterhousii, Castelnau, Proc. Zool. Soc. Vict., i., 



1872, p. 245, and ii., 1873, p. 60. Id., Macleay, Proc. 



Linn. Soc. N S. Wales, v., 1881, p. 350. 



Though the seventeen specimens examined differ somewhat 



from Castelnau's description of Vincentia ivaterhousii, I think it 



probable that that species is identical with A. conspersa as stated 



by Steindachner. 



Steiudachner also regarded Apogon opercularis, Macleay, as 

 synonymous with Klunzinger's species, but I have examined the 

 types of the former and find that they differ in having much 

 smaller mouths, and somewhat shorter and much broader 

 maxillary bones ; the direction of the dark band passing from the 

 eye to the preoperculum is also constantly different, 



hoc. — Investigator Strait, South Australia, 12-20 fathoms ; 

 February, 1912. 



Family ERYTHRICHTHYID^E. 



Genus Plagiogeneion, Forbes. 



Plagiogeneion, Forbes, Trans. N. Zeal. Inst., xxii., 1890, p. 273 

 (Tlterapou rahiginosus, Hutton). 



This genus is closely allied to Erythrichthys, Temminck & 

 Schlegel, and Emmelichthys, Richardson, but differs in the form 

 of its dorsal fin, and in having twelve spines. It is very similar 

 to Erythrichthys but the dorsal is not so deeply notched, and the 

 penultimate spine is as long as the last instead of being shorter 

 than it ; the teeth of both, if present, are microscopic, and are 

 apparently variable, though they are probably more distinct and 

 more persistent in Plagiogeneion. Emmelichthys has the poste- 

 rior dorsal spines isolated, and the body more slender than in the 

 other two genera ; it also appears to be always without teeth in 

 the jaws or palate. The three may be readily distinguished as 

 follows : — 



