NO. 



1787. SCI.'EyOID FISHES OF JAPAX—JORDAX AXD TJ1021P80X. 247 



Description from specimens 230 to 335 mm. in length to last 

 vertebra. Head 3 J to 3§ in length, 4^ to 4 J in total with caudal; 

 depth 3f in body, 4 in total; depth of caudal peduncle 2f to 3J; 

 maxillary 2h in head; longitudinal diameter of eye 5 to 6; interorbital 

 space above pupil 3 to 3J; width of preorbital S to 10, two-thirds 

 diameter of eye; snout 3| to 4; D. X — 1, 27 to 31; A. II, 7; pectoral 16; 

 scales in lateral line 50, in longitudinal series above 63, below 54, 

 between lateral line and insertion of dorsal 8 or 9; between lateral 

 line and ventrals 12 to 14. Gill rakers 6 or 7 + 13 (sometimes 4 or 

 fewer rudiments in addition) ; their length 2 in eye. 



Body somewhat compressed; its width about 2 in depth; dorsal 

 outline not greatly arched, curve from snout to caudal peduncle 

 even; ventral outline somewhat less arched; length of abdomen 

 from ventrals to anus 3| in body length w^ithout caudal; length from 

 anus to last vertebra 2f in body length to base of caudal. Head 

 conical; snout bluntly rounded, its tip nearly vertical but not over- 

 hanging ; with slight incisions on sides in free edge of skin above pre- 

 maxillaries; preorbitals flat, not turgid; lower jaw slightly included; 

 maxillary ending below posterior border of eye; cleft of mouth 

 nearly horizontal, tip of premaxillaries being below lower edge of 

 orbit. Teeth in upper jaw in two series; outer ones small, conical; 

 inner ones in a band 2 or 3 rows wide, minute and bristle like; teeth 

 in lower jaw also in 2 series, the inner somewhat larger, especially 

 posteriorly, becoming also minute at mandibular symphysis, the outer 

 teeth in 3 or 4 rows at symphysis, and one scattered row posteriorly, 

 somewhat indistinct. Preopercle with short conical spinules, set in 

 membranaceous border, somewhat larger at angle, but small; those on 

 angle as small or smaller than teeth of upper jaw, not projecting 

 downward. Opercle ending in 2 soft flat points, the upper smaller. 



Dorsal spines v/eak, third or fourth longest. If to 2 in head; dorsal 

 rays even in length 2^ to 2| in head, last two rays are much shorter; 

 spinous dorsal base 5 in body to last vertebra; soft dorsal base 2^; 

 anal spines stout, strong, second 2| to 3 in head (2 J in type), grooved, 

 as in Scisena alhijiora; anal base 4^ in that of soft dorsal. Pectorals 

 equal or slightly longer than ventrals, both pointed, IJ in head. 

 Caudal rounded. 



Lateral line arched, following dorsal contour to above anal, from 

 whence it follows center of caudal peduncle to tip of caudal. 



Scales ctenoid, save on anterior and lower part of head, a row along 

 soft dorsal and anal; none on spinous dorsal; caudal with few scales, 

 except along lateral line. No scales on other fins. Scales on body 

 in rows as described below. 



Pores on snout five, placed as in Scisena albijlora, one median above 

 free edge of skin, a pair on each side opening on edge, the outermost 



in the incision. Pores on mandible prominent, one central, inune- 



