BY W. MACLEAY, F.L.S. 545 



Genus Trachynotus, Cuv. & Yal. 

 Body compressed, more or less elevated, covered vvitli very 

 small scales ; cleft of mouth small, muzzle swollen above, obtuse. 

 Opercles entire. Two dorsal fins, the first composed of free spines 

 in small number, with an anterior horizontal one ; two anal spines 

 separated from the soft portion. No finlets. Small teeth in the 

 jaws and on the vomer and palatines, disappearing with age. 

 Seven branchiostegals, no pseudobranchiae. Pyloric appendages 

 in considerable or moderate number. 



Nearly all temperate and tropical seas. 



376. Trachynotus oyatus, L. 



Gunth., Cat. Fishes II., p. 481. Many synonyms. 



D. 6. 1/18-21. A. 2. 1/16-19. 



Height of body from two to two and one-third times in the 

 total length, length of head five and a-quarter, and lobe of caudal 

 fin four times. Anterior rays of dorsal and anal fins more or less 

 produced. Coloration uniform, dorsal, anal, and caudal lobes 

 black. 



Port Jackson. All Australian Coasts. 



377. TRACHiTNOTus uAiLLONii, Cuv. & Yal. 



Gunth., Cat. Fishes II., p. 484. 



D. 6. 1/22. A. 2. 1/22. 



The height of the body is three times and two-thirds in the 

 total length, the length of the head five times, and a lobe of the 

 tail three and a-third times. The anterior rays of the dorsal 

 reach beyond the middle of the fin, those of the anal, beyond 

 the end of the fin. A series of three or five black dots along the 

 lateral line, which is nearly straight. Dorsal, caudal, and anal 

 lobes black. 



Port Jackson. Torres Straits (Chevert Exp.) 



