258 Annals of the Carnegie Museum. 



10. Chelon crenilabis (Forskal). (Plate XIII, fig. i.) 

 Boko-menada (Japan). 



1-75. Mugil crenilabis Forskal, Descr. Anim.. p. -3. — Cuvier & Valenciennes, 

 Hist. Nat. Poiss., XI, 1828, p. 123. — Gunther, Cat. Fish. Brit. Mus., Ill, 

 1861, p. 458 ; Red Sea. 



1828. Mugil fasciatus Cuvier & Valenciennes, Hist. Nat. Poiss., XI, p. 125. 



Head 4. in length; depth 3.53; D. IV-2, 7; A. Ill, 9; P. 16; V. I, 

 5; width of head 1.46 in its length; snout 2.83; interorbital space 2; 

 eye 4.52; first dorsal spine 2.; first dorsal ray 1.64; third anal spine 

 3.; first anal ray 1.53; least depth of caudal peduncle 1.92; forty scales 

 in a lateral series from gill-opening above to caudal base, three more 

 large scales on the latter; twelve scales in a transverse series from 

 vent upward and backward to the soft dorsal ; about twenty-one pre- 

 dorsal scales. 



Body oblong, rather high, slightly compressed posteriorly; dorsal 

 and ventral profiles equally convex; head subconiform, upper surface 

 more or less convex ; interorbital space rather broad ; snout short, 

 truncated in front; mouth terminal, transverse, the cleft four times 

 as broad as deep, its angle reaching to a vertical through the poste- 

 rior nostril; mandibular angle obtuse; upper lip remarkably thick, 

 granulated, with small fleshy fringes along its edge, inferior part 

 whitish; lower lip rather thin, outer edge fringed; depression of the 

 upper jaw shallow, receiving a small knob at the symphysis of the 

 lower jaw; extremity of maxillary entirely hidden by pre-orbital, in- 

 ferior edge of the latter denticulated; isthmus very narrow, elongate; 

 eye moderate, anterior, with no adipose eyelid ; nostrils separated, the 

 posterior slit-like, situated midway between the anterior nostril and 

 orbit above. 



Head and body covered with imiform cycloid scales, those on the 

 top of head somewhat larger and irregular ; a fine longitudinal groove 

 on the scales on the body; a sharply pointed scaly flap along the base 

 of spinous dorsal, extending backward beyond the base of the fin; 

 pectoral and ventral with a pointed scaly flap ; a broad scaly flap be- 

 tween ventral bases ; soft dorsal and anal scaly ; proximal part of the 

 caudal covered with small scales. 



Origin of spinous dorsal nearer tip of snout than caudal base, first 

 spine the longest, fourth spine rather tiny; soft dorsal inserted much 



