22 THE VOYAGE OF H.M.S. CHALLENGER. 



moderate width, subequal iu size ; a small patch of teeth on the vomer and a few teeth 

 anteriorly on the palatine bones. More or less shallow grooves along the infraorbital and 

 the mandible. GiU-opening of moderate width. The dorsal commences above the 

 posterior portion of the pectoral ; length of the pectoral one-half of that of the head ; 

 each ventral reduced to a short simple filament. Yellowish, with nine broad dark brown 

 bands across the upper half of the fish, separated from one another by very narrow inter- 

 spaces of the ground colour. The cross-bars are lighter in the centre, subocellated, and 

 extend on to the dorsal fin. A Ijrown band runs from the snout through the eye to the 

 end of the operculum ; throat and abdomen blackish. Length of specimen, 5 inches. 

 Station 309 ; 40 to 140 fathoms. 



Merluccius gayi, Guich. 



Merlus gayi, Guichen. in Gay, Chile, vol. ii. p. 328 ; lolitli., lam. 8, fig. 2. 

 Merluccius gayi, Gthr., EisL, p. 346. 

 Merluccius australis, Hutton. 



D. 10/43-44, A. 43. New Zealand, Coast of Chile to Straits of Magellan. Gray 

 Harbour, Messier Channel. 



Macruronus iiovcB-zealandice, Hect. 



Corypliwnoides novce-zealandiie, Hect., Trans. N. Z. Inst., vol. iii. p. 136, pi. xviii. fig. 1. 

 Macruronus novie-zealandiie, Gthr., Zool. Eecord, vol. viii. p. 103; Hutton, Fish. New Zealand, 

 fig. 79. 



This species was hitherto known fi'om New Zealand and Tasmania ; its reapj^earauce at 

 the southern extremity of the American continent, therefore, is quite what may have been 

 expected. Tom Bay, Messier Channel. 



Thysanopsetta, n. gen. (Pleuronectidee). 



Body olilong ; head small ; cleft of the mouth of moderate width, the length of the 

 maxillary Ijeing more than one-third of that of the head. Dentition nearly equally 

 developed on both sides ; teeth villiform, in bands ; palatine and vomerine teeth none. 

 Dorsal fin commencing above the front margin of the eye. Eyes on the left side, tlie 

 upper but little in advance of the lower, both separated from each other hj a narrow, 

 Hat, scaly interspace. Margin of the gill-opening of the coloured side fringed. Scales 

 small, adherent, ctenoid, more distinctly so on the coloui'ed side than on the lilintl. 

 Lateral line straight. Straits of Magellan. 



Thysanopsetta naresi, n. sp. (PI. XL fig. A). 



D. 87, A. 59. The height of the body is two-fifths of the total length (without 

 caudal), the length of the head one-fifth ; snout rather shorter than the eye, the diameter 



