570 DESCRIPTIVE CATALOGUE OF AUSTRALIAN FISHES, 



422. Opisthognathus jacksoniensis, n. sp. 

 D. 26. A. 17. P. 15. 

 Head very round ; body tapering and very compressed towards 

 the tail; space between tlie eyes about one-third of their diameter ; 

 maxillary broad and rounded behind, and reaching two-thirds of 

 the distance between the eye and the angle of the prceoperculum. 

 The lateral line extends from the back of the head close beneath 

 the dorsal fin till near its termination. Colour yellow, with blotches 

 of brown on the body, and with the head densely spotted and 

 reticulated with brown ; the lower margin of the maxillary and 

 the membranes of the branchiostegals, black ; the dorsal and 

 caudal fins spotted and variegated with brown, the anal black and 

 the pectorals round, expanded, and of a bright yellow. 



Port Jackson. 



Grenus Oichlops, Mull. & Troseh. 



Head and body rather compressed, more or less elongate ; cleft 

 of mouth oblique ; eye lateral. Scales of moderate size, ciliated ; 

 lateral line interrupted. One dorsal fin with a few spines anteriorly; 

 ventrals inserted before or below the pectorals. Jaws with canine 

 teeth, vomer toothed, none on the X3alatines. Praeoperculum 

 entire. Six branchiostegals ; pseudobranchise and air-bladder 

 present ; pyloric appendages none. 



East Indian Archipelago. 



423. CiCHLOPS FILAMENTOSUS, W. Sp. 



D. 2-3/23. A. 3/12. L. lat. 40. 



The height of the body is one-fourth of the total length ; the 

 snout is less than half the diameter of the eye in length ; a pair 

 of very strong canine teeth in the lower jaw ; lateral line running 

 near the dorsal fin to near the end, and then recommencing below 

 it at about eight scales from the tail ; the rays of the dorsal, 

 caudal, anal, and ventral fins all prolonged into filaments. Colour 



