BY J. DOUGLAS OGILBY. 83 



The brilliant orange and black vertical fins of the male fish 

 make it a most conspicuous object, and in this case incidentally 

 led to my paying a visit to its haunts and to the consequent 

 rediscovery of the species, I having been told by Mr. Albert 

 Gale, late Lecturer to the Technical College, of a " golden-finned, 

 blue-eyed fish, rarely more than an inch long," which he some- 

 times caught when seeking for specimens for his fresh-water 

 aquarium; not being able to place the fish in question, I accom- 

 panied Mr. Gale in one of his excursions, with the above pleasing 

 result. 



Odax attenuatus, sp.nov. 

 D. XX 15. A. 19. V. i 4. P. 13. Sc. 43f. 



Body elongate and slender; upper profile of head convex, its 

 length 4|, the depth of the body 84 in the total length; depth of 

 head 2|, width of head 2|, of interorbital region 5|^, diameter of 

 eye 3f in the length of the head; snout moderate, rounded in 

 front, one-thii"d of a diameter longer than the eye; interorbital 

 region flat. Jaws equal, the maxillary extending backwards 

 midway to the eye, its length 5f in that of the head. Preopercle 

 entire. 



The dorsal fin commences above the lower angle of the base of 

 the pectoral, the space between its origin and the extremity of 

 the snout being 24 in its distance from the base of the caudal fin, 

 the rays increase in length to nearly the end of the fin, the 

 longest being 2^ in the length of the head : the anal fin originates 

 below the twenty-first and terminates below the twenty-sixth 

 dorsal ray : ventral fin long and narrow, inserted below the com- 

 mencement of the middle third of the pectoral, its length 1^^ in 

 that of the head, and 2|^ in the space between its origin and the 

 vent : pectorals rounded, the upper middle rays the longest, 15- 

 in the length of the head : caudal peduncle long and slender, its 

 least depth 2f in the distance between the dorsal and caudal fins. 



Upper half of the head and trunk and the tail brown, many of 

 the scales with a darker central spot; lower half of the head and 



