REPORT ON THE DEEP-SEA FISHES. 83 



Gadus argenteus. 



Gadicultis argenteun, Guichen., Explor. Alger. Poiss., p. 102, pi. vi. fig. 2. 

 Gadus argenteits, Giinth., Ann. and Mag. Nat. Hist., 1874, xiii. p. 138. 



Since this species was described from the Mediterranean, it seems to have been 

 found only once again, viz., during the cruise of the " Porcupine," in hit. 54° 10' N. and 

 long. 10° 59' W., in 183 fathoms. The single specimen obtained was 5^ inches long. 



Mora, Risso. 

 Mora mediterranea, Risso. 



Lowe ' found this fish at a depth of 300 or 400 fathoms, off Magdalena at Madeira. 

 The specimens collected by the Challenger were unfortunately destroyed on board ship. 



Halargyreus, Gthr. 

 Halargyreus johnsonii. 



Halartfijreus johnsonii, Giinth., Fish., vol. iv. p. 342. 



The structure of the typical specimen, and the circumstances connected with its 

 discovery at Madeira, are sufficient evidence that this fish belongs to the deep-sea fauna. 

 Numerous examples of the same species, as it seems, appeared some years ago on the 

 coast of New Zealand. A few specimens reached the British Museum, but unfortunately 

 all are in a very bad state of preservation, so that we are unable to give a figure of this 

 handsome fish. The caudal fin is separated from the other vertical fins by a free 

 peduncle, and the numbers of the fin-rays, counted in three specimens, are — D. 7 | 57. 

 A. 41 ; D. 7 I 55. A. 46 ; and D. 7 I 47. A. 41. 



Melanonus. 



Melanonns, Giinlli., Ann. iuul Mag. Nat. Hist., 1878, ii. p. 19. 



Head and body rather compressed, covered with cycloid scales of moderate size, and 

 terminating in a long tapering tail. Eye of moderate size ; mouth wide, anterior and 

 lateral ; both jaws with narrow bands of ^alliform teeth ; vomer and palatines with very 

 narrow stripes of minute teeth. Barbel none. Dorsal fin with a short anterior and 

 posterior division ; the middle portion commences immediately 1)ehind the anterior, and 

 has the anterior rays well developed ; the posterior division is confluent with the extreme 

 caudal rays and the posterior anal division. Anal like the dorsal, minus its anterior 

 division. The outer gill-rakers of the first branchial arch strong and long, longer than 



■ Proc. Zool. Soc. Land., 1843, ]i. 91. 



