GENUS AND TEN NEW SPECIES OF JAPANESE FISHES. 23 



posterior edge of pupil. Teeth in upper jaw movable, very small, 

 acute, close-set, in one row ; behind this another row of large 

 teeth more or less concealed in gum ; teeth in lower jaw much 

 larger, canine-like, very few in number, in one row ; no teeth on 

 vomer and palatines. Tongue rounded, free anteriorly. Gill- 

 openings lateral, slightly oblique, directly in front of base of 

 pectoral, the width being scarcely greater than length of the 

 latter ; gill-membranes united to throat, free from isthmus ; the 

 distance between both gill-openings slightly greater than inter- 

 orbital width ; gill-arch almost smooth, so that gill rakers on it 

 are not perceptible. First dorsal inserted above posterior half 

 of pectoral and nearer to origin of second dorsal than to tip of 

 snout ; third spine filiform, either reaching beyond or not reach- 

 ing origin of second dorsal ; web between last two spines broader 

 than preceding ones ; the fin united to back behind last spine 

 by a membrane. Second dorsal above vent ; distance between 

 origin of the fin and base of last spine of first dorsal equal to 

 length of snout ; the rays subequal in height except first ray, 

 about 1§ in head ; the fin without a membrane behind last ray. 

 Anal inserted below third ray of second dorsal, similar in form 

 to second dorsal, not adnate to body behind last ray ; both fins 

 extending posteriorly to same vertical some distance before base 

 of caudal. Pectoral rather short, posteriorly rounded, extending 

 midw^ay between origin of ventral and vent ; without silky rays 

 above. Ventral adnate to body, small, its disc almost circular, 

 extending beyond anterior half of pectoral. Caudal rounded. 



Scales small, strongly ctenoid ; those on anterior parts of 

 body and on base of caudal much smaller, cycloid ; nape closely 

 covered with small cycloid scales. Head, breast and belly naked. 

 No lateral line. 



