BY .J. DOUGLAS OGILBY. 135 



19. M. uKjvo fascia ta; = Strabo nigrofascialus, Kner cfe Steiii- 

 dachner, Sitzb. Ak. Wiss. Wien, liv. 1866, pp. 373, 395, 

 pi. iii. f. 10, [1867], and Iv. 1867, p. 16. Brisbane and 

 Fitzroy Rivers, Queensland. 



20 J/, pusil/a; =-- Zantecla piisilla, Castelnau, Proc Zool. &■ 

 Acclimat. Soc. Vict. 1873, ii. p. 88. Port Darwin, North- 

 West Australia. 



In the above list I have made no attempt to indicate the degree 

 of affinity between any of these species, but it is generally con- 

 ceded that Atherina sigiiiUa, Giinther, is identical with Pseiido- 

 mtu/il siynifer, and that Neinatocentris apleadida, Peters, and 

 Strabo mgrotascialus, Kner & Steindachner, cannot be separated 

 specifically from Melanotcenia iiigrans: Zantecla pusili a, Castelnau, 

 is a good species in my opinion. 



It is, however, improbable that all the twelve described species 

 of Rliombatractus are tenable, but I trust soon to be in a position, 

 with the cooperation of other scientific societies and of individual 

 students, to publish in this Journal a monograph of the family 

 with original descriptions of all the species. 



