307 
widely separate, elongate, pearshaped patches, slightly bent, 
narrow, and not much shorter than the eye, somewhat con- 
vergent posteriorly. Olivaceous above, whitish or silvery below. 
Fins yellowish, more or less dusky. Length of only specimen 
known 211 mm. [After Bleeker and Giinther, not seen by us]. 
Nomen indig: Keteng (Madura). 
Habitat: Madura sea near Surabaya. 
In sea. 
23. Arius froggatti Rams. & Ogilb. 
Arius froggatti Ramsay & Ogilby, Proc. Linn. Soc. N. S. Wales (2) I. 1886, p. 14. 
Cinetodus froggatti 1. Douglas Ogilby, Proc. Linn. Soc. ‘N. S. Wales, 1898, p. 32. 
Wee NA LO) es 2) TT VL 6. 
Height 5'/, in the total length. Head somewhat depressed, 
wider than deep, 4°/, in the total, its upper profile straight, 
gradually rising to the origin of the dorsal fin. Mouth small 
and crescentic, the width of its gape 3'/, in the length of 
the head; upper jaw slightly projecting; lips thin, without 
posterior lobe. Eyes small and lateral, their diameter '/, of 
the length of the head, °/, of that of the snout, which is 
obtuse and equal to the breadth of the bony interorbital 
space. Occipital process triangular, nearly as broad as long, 
with a crest. Posterior part of head densely granulated, as 
also are the edges of the occipital fontanel, which is narrower 
and much shorter than the interorbital fontanel; supraorbital 
fontanel present; otic fonticle small and circular. Humeral 
process granular. The maxillary barbel extends backwards to 
the base of the pectoral fin, the mandibulary one not quite so far. 
Dorsal fin inserted above the interspace between the pectorals 
and ventrals; its height equal to height of body, its spine as 
long as the head behind the posterior nostril; it is strongly 
granulated in front for two thirds of its height; the remaining 
third and the entire back being weakely serrated. Adipose 
fin opposite to anal, the length of its base equal to that of 
the rayed fin. Pectoral spines very strong, considerably longer 
than the dorsal spine, slightly ruffened on the outside and 
strongly denticulated on the inside. They almost reach to the 
ventrals, which on their part just touch the anal fin. Caudal 
4’/, in the total length, deeply forked, the upper lobe the 
longer. Jaws with broad bands of small, conical, acute teeth; 
