1869. ] ¥RESHWATER FISHES OF BURMA. 615 
Length of head 2, of pectorals +, of caudal 1, height of body + of 
the total length. 
Eyes without adipose lids, diameter ? of length of head, 1 diameter 
from end of snout, 14+ diameter apart. 
Body compressed, tapering to both ends ; snout somewhat pointed. 
Least depth of free portion of tail equal to half the length of head. 
Maxilla almost entirely hidden by the przorbital, which latter, 
although not emarginate, is strongly spinate, with eleven or twelve 
spines, the five posterior being the coarsest, and the last one the 
strongest. Lips thin. Cleft of mouth equal to half its gape. Man- 
dibular angle somewhat obtuse. Lower jaw with a knob on syin- 
physis. Uncovered space on chin lanceolate. 
Teeth absent. 
Fins. Dorsal arises midway between the snout and the base of the 
caudal; its spines are moderately strong, and the iength of the 
longest equal to that of the head from the middle of the orbit. 
Pectoral short ; its length equals that of the head without the snout. 
Second dorsal arises over the middle of the anal; its height equals 
that of the first dorsal. Anal spines well developed, the third the 
longest, lower surface of the fin concave. Caudal lunate. 
Scales strongly ctenoid, with a raised line, more or less apparent, 
along each. Few scales on the vertical fins; thirty-eight rows 
between the base of the first dorsal and the snout. No elongated 
scale in the axil. 
Colours. Silvery shot with gold; of a leaden colour along the 
upper half of the body. 
This is a small species found in the Irrawaddi, Pegu, and other 
rivers of Burma, but it rarely grows to 43 inches in length. 
It may be the M. cascasia, H. B.; but that is said to have 
D. 4 | i A. 2/8, and to be found in the rivers of Northern Bengal. 
CatTorpra NANDIoIDES?”, Bleeker. 
Bais (ie ae lo Vee A. SI. 18... Ly L, 27, 
“156° 
L. tr. 54/144. Ceee. pyl. 2. 
Length of head from ? to 3, of pectoral 4, of caudal 3, of height 
of body 2, of dorsal spines }, of dorsal rays ;*; of the total length. 
Eyes. Diameter nearly 7 of length of head, 1 diameter from end 
of snout, 14 diameter apart. 
Snout convex in the adult. Body oblong, compressed, and rising 
from the snout to the base of the dorsal fin. 
Preorbital and preeopercle rather strongly serrated, fine serrations 
in the contiguous portions of the sub- and interopercles. Two flat 
spines on the opercle, the lower being double in the adult. Poste- 
rior extremity of maxilla extends to beneath the anterior margin of 
the orbit. 
Teeth villiform in both jaws, the external row being the largest, 
more especially in the upper jaw. SBlunted teeth on the vomer and 
palate. Tongue osseous, toothed. 
Fins. Dorsal spines strong, interspinous membrane deeply cleft ; 
