A COLLECTION OF FISHES FROM SUMATRA. 515 



vertical dark bars on back. In all of these accounts of lineolata the body is moi-e 

 elongate. 



{Vermiculatus, from color marks simulating the tracks of worms.) 



86. Leiognathus virgatus sp. nov. Plate XV, lower figure to right. 



Head 3|; depth 1|; D. VIII, 16; A. Ill, 14; P. ii, 14; V. I, 5; pores with 

 first 20 or more distinct, others obliterated; width of head 2 in its length; depth 

 of head 1 ; second dorsal spine 1|; second anal spine 2-1- ; pectoral \\; ventral 2|-; 

 least depth of caudal peduncle 4^ ; snout 3-1- in head, measured from its tip ; eye 

 2-| ; tip of snout to end of maxillary 21 ; interorbital space 34- ; upper caudal lobe 

 o^ in body, from tips of jaws. 



Body deep, compressed, upper and lower profiles nearly evenly convex, and 

 greatest depth about origin of spinous dorsal. Caudal peduncle compressed, and 

 its exposed length about four-fifths its least depth. 



Head deep, compressed, and upper profile convex, coiTcave, and again convex. 

 Lower profile forming an obtuse angle at slight articular process. Snout high, 

 broadly conic, and with upper jaw projecting beyond. Eye a little anterior, and 

 high in head. Jaws equal, mouth terminal, and gape reaching about opposite first 

 two-fifths of length of snout. Profile of chin straight. Mouth protractile downwards. 

 Teeth small, fine, brush-like, and in a single series in jaws. Lips rather thin. 

 Maxillary with its upper margin nearly vertical and opposite front rim of orbit. 

 Nostrils more or less facing forward, lateral, adjoining, near front of e^e, and pos- 

 terior twice as large as anterior. Interorbital space a little elevated, with a median 

 low ridge, and a parietal ridge widely separated on each side, sharp, and leaving a 

 broad space between. Occipital ridge distinct. Two small spines in front of eye 

 above, anterior with two prongs. Supraorbital ridge a little rough, almost entire. 

 Lower edge of preoperculum finely serrated. 



Gill-opening extending forward opposite front rim of orbit. Gill-rakers 6 + 18, 

 slender, pointed, more or less equal, and a little less than filaments. Pseudo- 

 branchiae large, about half of orbit. Shoulder girdle inside with three processes, 

 first opposite origin of pectoral, second opposite lower base of pectoral, and third 

 obsolete and well separated. Isthmus broad and rounded. 



Scales small, narrowly imbricated, weak, and extending on chest and breast. 

 Scaly sheaths along bases of spinous dorsal and anal. Soft dorsal and anal 

 with a series of inconspicuous spines along their bases on each side. Ventral 

 fiap equal to its spine. Base of caudal scaly. Abdomen narrow, compressed, 

 sharply trenchant just before spinous anal, and reaching a little more than half 

 way to origin of .ventral. A short median convex process on chest. Two small 

 keels close together, each running forward from root of ventral to chest process. 

 Lateral line convex, running for half of base of dorsal, becoming indistinct, and 

 finally obliterated after spinous dorsal. Pores large. Back trenchant before spinous 

 dorsal. 



Origin of spinous dorsal over first quarter of pectoral, second spine longest, 

 enlarged, and others graduated down. Soft dorsal low, origin of fin about midway 



