438 Dr. A. Gunthev on neio Fishes from Japan. 



wide, the maxillaiy extending to behind the eye, barbels none. 

 Teeth of the jaws, vomer, and palatine bones in villiform 

 bands. Nostrils gaping, oval openings, of which the anterior 

 is surrounded by a membranous wall. Prfeoperculum crescent- 

 shaped, without any armature ; operculum with a strong spine 

 above. 



Scales minute ; also the entire head, even the space between 

 the nostrils, covered with minute scales. Lateral line indis- 

 tinct for the greater part of its course. 



The dorsal fin is, like the anal, enveloped in a thick, scaly 

 skin. It commences with short rays above the middle of the 

 pectoral fin. The pectoral is rounded, broad, and remarkably 

 short, about half as long as the head. Ventrals inserted below 

 the angle of the j)r9eoperculum, at some distance behind the 

 symphysis of the humerus. Each ventral filament is bifid, 

 the inner part being the longest. Distance of the vent from 

 the root of the pectoral more than the length of tlie head. 



Brown ; darker behind, lighter in front. Fins blackish. 

 Cavity of the mouth grey, peritoneum black. 



Total length 29^ inches, length of the head of inches, length 

 of ventral filament 3 inches. Distance of the vent from the 

 snout 12i inches. 



South of Yeddo. 



Macrurus macrocMr. 

 1 D. 11. V. 7. 



Snout produced, tetrahedral, rather longer than the large 

 eye ; a bony ridge runs along the median line of the upper 

 side of the snout, and a fold of the skin along that of the 

 anterior side. Interorbital space slightly convex, its width 

 being somewhat more than the diameter of the eye. Infra- 

 orbital ridge low. Mouth rather wide, more lateral than in 

 the other Species of this genus. Barbel very small. Teeth 

 " en carde,'' in a narrow band in the upper jaw, and in a 

 single series in the lower. No scaleless fossa on the side of 

 the temple. The two limbs of the prajoperculum meet at a 

 somcAvhat acute angle, wliich is produced backwards. 



The second dorsal spine is smooth and slender ; and the 

 second dorsal fin commences at a distance behind the first 

 "which is about one half of the length of the head. Pectoral 

 fin remarkably long, extending to the origin of the second 

 dorsal, and equal in length to the head the snout not included. 

 The outer ventral ray not pi-oduced. 



Scales rather thin, with from eight to ten finely crenulated 

 radiating ridges, which do not project beyond the margin of 

 the scale. There are five scales in a transverse series between 



