4 G. A. BOULENGER. 



February 2ud, 1903, which I must refer to the same species. As in Trachinus, the 

 post-larval fish is remarkable for the very large size of the ventral fins, which are about 

 three times as long as the pectorals, and of an intense black. 



Other post-larval fishes, collected with the above, and also a few days later, 

 February 23, 1903, appear to be referable to Gymnodraco acuticeps, Blgr., and are 

 also remarkable for the very long ventral fins ; there are two black bars on the body 

 and a third at the root of the caudal fin. 



9. Bathydraco macrolepis. 

 (Plate I., fig. 3.) 



Body slightly depressed, gradually attenuate towards the caudal peduncle ; its 

 depth nine times in the total length. Head large, three times in the total length, 

 twice and one-fourth as long as broad ; snout spatulate, one-third the length of the 

 head ; diameter of eye one-fourth the length of the head, and three times the width 

 of the interobital region ; jaws with broad bands of villiform teeth, the lower projecting 

 beyond the upper ; maxillary extending to below the anterior border of the eye. Gill- 

 rakers moderately elongate, widely set, six on lower part of anterior arch. Seven 

 branchiosteo-al rays. Dorsal fin with 39 rays ; its base slightly longer than its 

 distance from the end of the snout, the longest rays two-fifths the length of the head. 

 Anal fin with 29 rays, the longest measuring two-sevenths the length of the head. 

 Pectoral fin longer than the ventral, three-fifths the length of the head. The distance 

 between the extremity of the ventral and the vent one-fourth the length of the fin. 

 Caudal fin rounded, half as long as the head. Scales strongly ctenoid, 96y% ; lateral 

 line 56, extending from the upper extremity of the gill-cover to the root of the caudal 

 fin. Uniform brownish, posterior half of the ventral fins blackish. Total length, 

 210 millimetres. 



A single specimen, taken at a depth of 252 fathoms, to the south-west of the 

 Balleny Islands, March 4th, 1904. Distinguished from B. antarcticus, Gthr., by the 

 much larger scales, fewer and longer gill-rakers, and fewer branchiostegal rays. 



10. Pleuragramma antarcticum. 

 Boiilenger, op. cit., p. 187. 



Twenty specimens, measuring up to 200 millimetres, mostly from the stomachs of 

 seals, January 23rd, 1903, and February, 1904, but one found among ice crystals at 

 the seal hole ofi" Cape Armitage, September 22nd, 1902, and one taken at a depth of 

 254 fathoms to the south-west of the Balleny Islands, March 4th, 1904. 



Series of young showing the development were also obtained by Mr. Hodgson. 

 In specimens measuring about 20 millimetres, the body is very elongate, and a series of 

 black dots borders the base of the dorsal and anal fins. 



