1918.1 NATURAL SCIENCES OF PHILADELPHIA. 11 



quite to its edge. Scaly pointed flap along spinous dorsal base 1| 

 in fin. Short scaly axillary pectoral flap 4 in fin. Axillary scaly 

 ventral flap 2| in fin. Broad scaly flap between ventral bases 

 (damaged). Soft dorsal, anal and caudal all densely scaled, only 

 hind edge of last naked. Pectoral and ventral largely scaly over 

 basal portions. Three scales between dorsal spine tips and soft 

 dorsal origin. 



Spinous dorsal midway between snout tip and caudal base, first 

 and second spines subequal, fin 1| to soft dorsal origin. Latter 

 nearly midway between spinous dorsal origin and caudal base, 

 depressed fin 1| to caudal base. Anal origin much nearer caudal 

 base than ventral origin, depressed fin If to caudal base. Caudal 

 well emarginate behind, about long as head, lobes about equal. 

 Pectoral short, broad, If to spinous dorsal origin. Ventral inserted 

 about opposite last fourth in pectoral, extends slightly over half 

 way to anal. Vent a scale width before anal. 



Color in alcohol faded, dull, uniform brown, slightly olive above. 

 Dorsals slightly dusky above, and same tint very slight along hind 

 caudal edge. Iris dull slaty. Peritoneum black. No dark blotch 

 at shoulder or pectoral base. 



Length 206 mm. 



Type, No. 47,483, A. N. S. P. 



Pliilippine Islands. Presented by the Commercial Museums of 

 Philadelphia. 



This species is allied with Mugil dussumieri Valenciennes^ in its 

 densely scaled soft dorsal and anal fins. As described by Day^ 

 M. dussumieri would differ in the bent and emarginate preorbital, 

 spinous dorsal origin midway between front eye edge and caudal base, 

 and first spine longest and strongest. Day's fish is also slightly more 

 slender than my example. 



(Ast:]?^ scale; T^rcpdv, fin; with reference to the scaly rayed vertical 

 fins.) 

 Corythroichtliys matterni sp. nov. Fig. 5. 



Head 3i to vent; depth 7i; D. 25; A. 2; P. 15; C. 6; rings 15+39; 

 snout 2| in head; eye 5|; pectoral 5^; caudal 1| in snout; inter- 

 orbital 2^ in eye. 



Body very long, trunk well compressed and deepest midway in 

 its length, and combined with head Itt in long slender tapering tail. 

 Upper keel each side on back not extending beyond last fourth of 



* Hist. Nat. Poiss., XI, 1836, p. 109. Bombay, Coromandel. 

 6 Fishes of India, II, 1876, p. 352 (non PI. 74, fig. 4). 



