•54 SUPPLEMENT TO CATALOGUE OF THE PISHES OF AUSTRALIA, 



the head, but not to the dorsal fin ; the maxillary barbels are 

 much shorter, only reaching just beyond the eye; the outer 

 mandibulary barbels reach to the branchial aperture, the inner 

 about half the distance. Five short canine teeth on each side of 

 the lower jaw. 1st dorsal fin as high as the body and a little 

 shorter than the head ; pectoral spine a little shorter than the 

 dorsal. Colour uniform brownish. Allied to C. microcephalics, 

 15 Ctm. 



Port Darwin. (Klunzinger.) 



Family. HAPLOCHITONID^. 



Genus. Haplochiton. Jenyns. 



General habit of the trout, but completely naked. The dorsal 

 fin occupies a position somewhat posterior to that of the ventrals. 

 which are in the middle of the length of the body, and composed 

 of seven rays. Adipose fin small ; caudal forked ; anal of inodei'ate 

 length. The nostrils are somewhat remote from each other. Eyes 

 of moderate size. Teeth small, curved, in a single series, in the 

 upper and lower jaw and on the palatine bones. Tongue broad, 

 with a series of curved teeth on each side. Gill-openings rather 

 wide, the gill-membranes not attached to the isthmus ; the outer 

 branchial arch with lanceolate gill-rakers. Pseudobranchia? well 

 developed. Air-bladder simple, grown to the walls of the abdomen. 

 Stomach thick and muscular ; pyloric appendages none. The 

 urogenital organs of both sexes are produced into a cylindrical tube, 

 which lies concealed in a groove before the anal fin. 



Tierra del Fuego and Falkland Islands. 



12G3. Haplochiton Sealii. Johnston. 



Proc. Roy. Soc. Tasman., 1882, p. 128. The Derwent Smelt. 



B. G. D. 8-9. A. 19-20. V. 7. P. 9-12. Vert. 56-57. 



" Body naked. Total length 5-3 times length of head and nearly 

 10 times the height of the body. Head somewhat broad, depressed ; 

 interorbital space wide. Teeth in a single series, small, hooked, 

 on maxillary and mandible, minute on the palate. Eye relatively 

 large, diameter equal to length of snout, which latter is contained 



