288 
greyish white below, fins more or less reddish hyaline. Distal 
part of dorsal, adipose fin, anal and caudal darkish as also 
the upper surface of the paired fins. Lenght to 1000 mm. 
Nomen indig.: Ikan manjong utik, Manjong Karbo, 
Manjong tonggol (Malay. and Sundan.), Gunggut (Banjermassin). 
Habitat: Java (Batavia!, Bantam, Tjiringin, Pasuruan, 
Besuki, Palabuan); Sumatra (Telokbetong, Benkulen, Padang, 
Tiku, Siboga); Nias; Singapore!; Bintang; Borneo (Banjer- 
massin); Celebes (Macassar); Sumba!; Timor!; Rotti!; Mysore; 
New Guinea!. — Australia, New Caledonia, Philippines, Tonkin, 
westward to the Red Sea and coast of Zanzibar. 
In sea. 
Note: Arzodes aeneus described by Sauvage (Bull. Soc. 
Philomatique (7) VII. 1883, p. 160) from ,Ile Raffles: Voyage 
de la Zélée” is perhaps a specimen of Arius thalassinus, in 
which the 2 anterior quadrangular patches on each side, which 
normally touch each other, are united. But it is impossible 
to decide this, as the only specimen is not to be found in 
the Paris Museum, as Dr. PELLEGRIN has the kindness to 
inform us. 
10. Arius gagorides (C. V.). 
> Pimelodus sona Hamilton Buchanan, Fishes Ganges, 1822, p. 172, 376. 
Bagrus gagorides Cuvier & Valenciennes, Hist. Nat. Poiss. XIV. 1839, p. 441. 
Bagrus trachipomus Cuvier & Valenciennes, Hist. Nat. Poiss. XIV. 1839, p. 443. 
Arius gagorides Ginther, Cat. Brit. Mus. V. 1864, p. 140. 
Arius sona Day, Fishes of India, 4°. 1878—1888, p. 462. 
Arius gagorides Duncker, Mitth. naturhist. Mus. Hamburg, XXI. 1904, p. 174. 
Be G67) DS 7 SAL e VPs Sle aoe iN oe 
Height rather more than 4, head 3'/,, much broader than 
high, its greatest width being equal to the distance of the 
hinder nostril from the end of the opercle. Crown of head 
sranulated, the granules being arranged in radiating series. 
Median fontanel wide, but it does not extend to the base of 
the occipital process, which is triangular, elevated into an 
obtuse ridge along its middle and rather broader than long; 
the basal bone of the dorsal spine is of moderate width, nar- 
rowest in the middle, each half slightly bent into an S-shaped 
form. Maxillary barbels reach to end of head or not so far, 
mandibular ones shorter. Dorsal spine strong, as long as head 
without snout, granulated in front and obtusely serrated be- 
