1918.] NATURAL SCIENCES OF PHILADELPHIA, 3 



My five examples all show it. Richardson's figure has a much 

 smaller eye and has no pores behind the eye. Jordan and Richard- 

 son give the chin and throat pale yellow in life, and the pectoral 

 yellowish; in my examples, muzzle and head below dusky or soiled 

 blackish. 

 Pisoodonophis boro (B. Hamilton). 



Several, with very fine longitudinal wrinkles or grooves, mostly 

 parallel, on pharynx Jordan and Richardson omit this species from 

 their check-list, though Giinther previously recorded an adult from 

 Zebu.i 



Hemiramphus limbatUS Valenciennes. 



Large series, all small, and with broken beaks. These show: 

 Head 4^ to 41; depth 7f to 8f ; D. ii, 12 or 13; A. in, 12 or 13; scales 

 46 to 52 in lateral row to caudal base, and 6 to 9 more on latter; 

 predorsal scales 42 to 47 ; snout 2| to 3 in head measured from upper 

 jaw tip; eye 3f to 4|; maxillary 3 to 3f ; interorbital 3| to 4; rakers 

 5 to 7 + 10 to 17, lanceolate, about f of filaments and latter 2 in eye; 

 length 80 to 118 mm. 



Probably Oxyporhamphus hrevis Seale belongs in Arrhamphus 

 Giinther (type A. sclerolepis Giinther) or the short-billed forms with 

 short pectorals. 

 Mugil ruthveni sp. nov. Fig. 1. 



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

 30 in lateral series from gill-opening above to caudal base, and 

 3 more large ones on latter; 11 scales between second dorsal and anal 

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

 If; snout 3f ; eye 4^; mouth width 3f ; interorbital 2|; first dorsal 

 spine If; first dorsal ray If; third anal spine 2^; first anal ray If; 

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



Body elongate, with fusiform contour, compressed, deepest at 

 spinous dorsal origin. Caudal peduncle compressed, least depth 

 about 1| its length. 



Head robust, somewhat constricted below, profiles alike. Snout 

 moderately broad, convex as viewed above, length nearly half its 



1 The American species described by Goode and Bean and referred to Pisoo- 

 ■donophis is evidently different in its serpent-like head, strong neck-muscles and 

 constriction of the head somewhat as in Derichthys. It may, therefore, stand 

 as a distinct subgenus. 



Omochelys subgen. nov. 



Type Pisoodonophis cruentifer Goode and Bean. 



Differs from subgenus Pisoodonophis in having the dorsal inserted behind the 

 pectoral. 



{Qijoc, cruel; £YX^''^vg^ eel; with reference to its savage habits.) 



