658 DR. A. GUNTHER ON NEW FISHES [Nov. 21, 



extend to the vent. The least depth of the free portion of the tail 

 is considerably less than its length. Body uniform brownish black, 

 the scales of the lower part of tbe body lighter in the centre. Fins 

 black ; the lower half of the caudal of a deeper shade than the upper. 

 Feejee Islands. One specimen (no. 280), 8^ inches long, from 

 the Godefifroy Museum. 



Dentex rivulatus (Riipp.). 

 Gymnocranius rivulatus, Klz. 



This species is found at the Seychelle Islands; it is the " Sph<e- 

 rodon yrandoculm" of Col. Playfair's List of Seychelle Fishes. 



Histiopterus labiosus. (Plate LIX.) 

 B. 6. D. L A. £. 



17 11 



The height of the body is somewhat less than the length of the 

 head, and one third of the total (without caudal). Upper profile of 

 the head concave ; snout much produced, the eye being entirely 

 situated in the posterior half of the length of the head. Mouth of 

 moderate width, the angle of the mouth being much nearer to the 

 vertical from the eye than to the end of the snout. Lower jaw 

 slightly the longer ; lips and chin densely covered with short papillae. 

 The teeth are in bands en cardes, and most of those of the sides are 

 very obtuse, molar-like. The scales on the cheeks hidden below 

 the skin. Prseoperculum with the hind margin concave, and with 

 the angle projecting ; the angle and lower margin are indistinctly 

 denticulated. Opercles scaleless. Scales very small. Dorsal spines 

 strong, the fourth being the longest ; the seventh not much shorter 

 than the first ray. Caudal fin emarginate, with the angles pointed. 

 Pectoral, two thirds as long as the head, with the upper rays longest. 

 Brown, with indistinct blackish longitudinal markings. 



One specimen, 22 inches long, from South Australia. 



Ch.etodon miliaris (Quoy & Gaim.). 



D. g. A. ^. L. lat. ca. 39. 



The depth of the scaly part of the body is two thirds of the total 

 length (without caudal). Snout somewhat pointed, short, rather 

 shorter than the eye. The soft dorsal and anal fins obtusely rounded. 

 Body of a nearly uniform olive-colour (in spirits), the scaly sheath of 

 the dorsal fin yellow ; each scale with an indistinct violet spot at the 

 base. The ocular band commences in front of the first dorsal spine, 

 is narrower than the orbit, and edged with yellow. It is still nar- 

 rower below the orbit and also paler, but extends over the inter- 

 operculum. Caudal fin without any markings. The soft dorsal and 

 anal with a narrow black and white margin, and slightly powdered 

 with black within the margin. The smaller specimen appears to 

 have had a round blackish spot between the seventh and thirteenth 

 dorsal rays close to the margin of the Rh~. 



