A COLLECTION OF FISHES FROM SUMATRA. 513 



especially elongate. Soft anal similar, first ray longest, and origin of fin a little 

 posterior. Anal spines small, second larger, and first inserted opposite origin of 

 soft dorsal. A short bony keel from anal spines to anus. Caudal small, triangular, 

 forked, and lobes sharply pointed. Pectoral rather broad, falcate, and not reaching 

 beginning of straight part of lateral line. Ventral small, inserted below pectoral, 

 and hardly reaching half way to origin of soft anal. 



Color in arrack grayish or slaty-brown above, sides and lower surface whitish, 

 washed with silvery. Fins plain pale or dilute brown, dorsals slight!}' dusky. No 

 opercular spot. Peritoneum silvery. 



Length 3^ inches. 



Type No. 27.517, A. N. S. P. Padang. 



One example. This species is closely related to Caravgoides malabaricus, 

 differing in its deeper body and in absence of opercular spot. 



{^Gibber, hunch-back.) 



78. Carangoides oblongus (Valenciennes). 



79. CiTUL.A ARMAT.\ (Forskal). 



80. CiTULA .ATROPOS (Schneider). Plate XIV, lower figure to left. 



81. ScYRis INDICA Riippell. 



82. Trachinotus ov.\tus (Linnjeus). 



RACHYCENTRID^. 



83. Rachycentron pondicerianus (Cuvierl. 



STROMATEID.ffi. 



'84. Apolectus NIGER (Blocli). 



LEIOGNATHID^. 



EQUULITES subgen. nov. 

 Type Leiognathus venniculaius sp. nov. 



Mouth protractile downward. Breast and chest entirely scaled. Lateral line 

 incomplete. 



{'■'■Cavalla est le nom portugais du maquereau et equula sa traduction " 

 [Cuvier].) 



8.5. Leiognathus vermiculatus sp. nov. Plate XV, .lower figure to left. 



Head 3i; depth 2^; 'D. VIII, 16; A. Ill, 13; P. ii, 14; V. I, 5 ; scales 48 

 in lateral line to base of caudal ; about 12 scales between origin of dorsal and lat- 

 eral line ; width of head 2-1- in its length ; depth of head \\ ; snout 3 ; eye 3 ; 

 tip of snout to end of maxillary 2|^ ; interorbital space 3 ; second dorsal spine If ; 

 second anal spine 2 ; least depth of caudal peduncle 4f ; pectoral \}y ; ventral 25-. 



Body rather elongate, compressed, and greatest depth at origin of spinous 

 anal. Caudal peduncle compressed, its exposed length two-thirds its depth. 



Head rather deep, compressed, upper profile great!}- inclined, nearly straight, 

 and lower profile with a small process about opposite front of pupil. Snout rather 

 long, blunt. Eye a little anterior and high. Mouth inferior, upper jaw projecting 

 a trifle beyond mandible. Profile of chin slightly concave, nearly straight. Gape 

 not reaching more than two-fifths of space to eye. Mouth protractile downward. 



65 JOURN. ACAD. NAT. SCI. PHILA., VOL. XII. 



