1918.] NATURAL SCIENCES OF PHILADELPHIA. 5 



Spinous dorsal inserted about midway between front of eye and 

 caudal base, first spine longest and depressed fin 1| to soft dorsal 

 origin. Latter nearly an eye-diameter nearer caudal base than 

 spinous dorsal origin, depressed fin 1| to caudal base. Anal origin 

 nearer caudal base than ventral origin, depressed fin If to caudal 

 base. Caudal emarginate behind, 3| in head and trunk, lobes about 

 equal. Pectoral short, broad, Ij to spinous dorsal origin. Ventral 

 inserted about opposite middle in depressed pectoral, If to anal. 

 Vent close before anal origin. 



Color in alcohol dull brownish generally, slightly tinted olivaceous 

 on back. Fins all pale, and hind caudal edge narrowly dusky. 

 Iris pale slaty. Peritoneum blackish. No dark blotch at shoulder 

 or pectoral base. 



Length 240 mm. 



Type, No. 47,478, A. N. S. P. 



Philippine Islands. Presented by the Commercial Museums of 

 Philadelphia. 



Only the type known. The dark hind caudal edge is suggestive 

 of Mugil sundanensis Bleeker,- but that species has 9 branched anal 

 rays, preorbital deeply notched, snout long as eye, etc. 



(Named for Dr. Alexander G. Ruthven, of the University of Michi- 

 gan, well known among leading herpetologists, who has written on 

 Michigan fishes.) 



Mugil ogilbyi sp. nov. Fig. 2. 



Head 3|; depth 3f ; D. IV-I, 8; A. Ill, 9; P. i, 14; V. I, 5; scales 

 28 in lateral series from gill-opening above to caudal base and 4 

 more large ones on latter; 10 scales between second dorsal and anal 

 origins; 20 predorsal scales; head width 1| its length; head depth 

 1|; snout 3|; eye 4|; mouth width 3^; interorbital 2j; first dorsal 

 spine 1^; first dorsal ray 1|; third anal spine 2f ; first anal ray 1|; least 

 depth of caudal peduncle 2|; pectoral 1^; ventral 1^. 



Body elongate, contour fusiform with lower profile slightly more 

 convex, deepest at spinous dorsal origin. Caudal peduncle com- 

 pressed, least depth 1| its length. 



Head robust, very slightly constricted below, lower profile slightly 

 more convex and inclined. Snout broad, widely convex as viewed 

 above, length about | its width. Eye circular, hind edge anterior 

 to center in head length about diameter of pupil. Adipose-eyelids 



2 Nat. Tijds. Ned. Indie, IV, 1853, p. 265. Benctilen-Sumatra. Batavia, 

 Java. 



Giinther, Cat. Fish. Brit. Mus., Ill, 1861, p. 425 (copied). 



