OF NEW SOUTH WALES. 345 



Polynesian character. As I am anxious to avoid swelling out 

 this paper to an unnecessary bulk, I shall not give all the syno- 

 nyms and references to each individual species I may require to 

 notice. I think it will be sufficient to give references only to 

 such well-known works as " Cuvier's and Valencienne's Histoire 

 Naturelle des Poissons," Gunther's " Catalogue of the Fishes in 

 the British Museum," and Dr. Blecker's " Atlas Ichthyologique 

 des Ind. Or. Nederl." These are books which no ichthyologist 

 should be without ; indeed Gunther's Catalogue is absolutely 

 indispensable to any one engaged in the study of Fishes. 



Family PERCIDAE. 



1. — PSEUDOLATES CAVIFRONS. 



All. and Macl. Proc. Linn. Soc., N. S. W., Vol. I., p. 262, 

 pi. III. 



There are several specimens of this fish — one 30 inches long, 

 the rest small. They were all taken in salt water, but I have 

 little doubt that like its congener Lates nobilis, Cuv. and Val., it 

 enters rivers. 



2. — Lates Darwiniensis, n. sp. 



D. 7 l/n, A. |, L. lat. 60. 



Body compressed, narrow; height one-fourth of the total 

 length, head one - third of the same ; mouth moderate ; 

 forehead narrow between the eyes, the space being much 

 less than half the diameter of the orbit ; operculum with 

 one acute spine visible ; coracoid with four denticulations ; 

 praeoperculum serrated on the posterior edge and armed with a 

 large flat acute spine at the angle, and with three small teeth 

 pointing backwards on the lower limb ; the third dorsal spine is 

 much the largest ; the anal spines are all small ; the fins, with 

 the exception of the base of the pectorals, are nearly black, and 

 are mostly covered with small scales, the soft dorsal most dis- 

 tinctly so on its lower half ; the coloration is dark on the back 

 and silvery yellow beneath. 



I have only one specimen 9 inches long, and in bad condition. 

 It was found dead near the sea. 



