331 
the pectorals. Height of dorsal more than length of postorbital 
part of head, dorsal spine 17/,—1°/, in head, its frontedge granular, 
its posterior edge serrated. Base of adipose fin about equal 
to that of dorsal, more than thrice in its distance from dorsal, 
opposite to concave anal, the height of which is ?/, of that of 
the dorsal. Ventrals about 2'/, in head, far distant from anal, 
their origin far behind end of base of dorsal. Pectoral spine 
more than twice in head, denticulated at both edges. Caudal 
forked. Villiform bands of teeth in the jaws; on the palate 
two longitudinal, semioval patches of obtusely conical teeth. 
Back bluish, light below. Distal part of dorsal and adipose 
fin dark blue. Length 310 mm. 
Nomen indig.: Ikan Manjong karbo (Malay. Batavia) ; 
Ikan Lundu (Semarang); Ikan keteng (Surabaya); Ikan Songop 
(Pasuruan). 
Habitat: Java (Batavia, Semarang, Surabaya, Pasuruan) ; 
Madura; Java-Sea!; Sumatra (Bagan api api!); Borneo (Sarawak); 
Singapore. — Malacca to British India. 
Sea, estuaries and tidal rivers. 
7 Batrachocephatu's: (Blecker.): 
(BLEEKER, Nat. & Geneesk. Arch. Ned. Ind. III (2), 1846, p. 176). 
Elongate; head large, broad, depressed, with a very short 
obtuse snout. Headshields naked. Eyes in the anterior half of 
the head, with a free orbital margin, above angle of mouth, 
which has a very wide, arcuate gape. The lower jaw is prominent. 
Nostrils very close together, the posterior separated by a valve 
from the anterior one, which has a circular rim, both are close 
to the eye. A pair of very small mandibulary barbels and 
indications of the mental ones. Short dorsal with a denticulated 
pungent spine and 7 rays. Adipose fin short, opposite to anal. 
Ventrals 6-rayed, reaching the anal or nearly so; their origin 
far behind end of base of dorsal. Pectorals with a strong, 
denticulated spine. Caudal forked. Obtusely conical teeth in 
four or five more or less complete series, forming a crescentic 
band in each jaw. Vomer edentulous. Palatines with a longi- 
tudinal band of conical teeth. Gillmembranes confluent and 
united with the isthmus, having a free posterior margin without 
notch. 5 Branchiostegals. 
