of the Bay of Bengal ce. 455 
The posterior half of the interval between this fin and the 
tip of the tail is crested by a low median fold of skin (not 
much more than half a millimetre high after contraction in 
spirit), enclosing distant, thin, sharp, irregular indurations. 
Between this second rudimentary dorsal and the first dorsal is 
a median erectile scale a little longer than the eye. The anal 
fin arises a little in advance of the vertical middle of the body 
and is continued to the tip of the tail. The pectorals, which 
arise on narrow bases above the horizontal middle of the 
body, reach barely halfway to the origin of the ventrals. 
These, which arise exactly halfway between the gill-openings 
and the vent, are united together into a broad plate. 
Colours in spirit:—Finkish brown; fins grey; opercles 
and gill-membranes black. 
Stomach short, cecal; intestine straight, wide; both in- 
vested throughout with black peritoneum; a few minute, 
rudimentary, pyloric cxca. The liver embraces the cesopha- 
gus; its left lobe large, its right extremely small. The 
generative glands form an elongated series of almost inde- 
pendent lobules on each side. The air-bladder is an elongated 
thick-walled nacreous sack, occupying the greater part of the 
length of the abdominal cavity and ending abruptly in front 
in a fine cord, which is firmly attached to the dorsal surface 
of the cesophagus. 
Total length 15} inches. 
One specimen. 
Hab, Andaman Sea, 7} miles east of North Cinque Island, 
in 490 fathoms. 
The dorsally-keeled tail with its indurations, the united 
ventrals, and the loose palatine bones, all coexisting in one 
fish suggest an alliance in the direction of Notacanthus. 
Family Murenide. 
Group Awv@uzLLINA. 
ConGROMURA&NA, Kaup. 
Congromurena longicauda, sp. nov. 
Head tapering in both dimensions from the gill-cleft to the 
fleshy, blunt-pointed, projecting snout. ‘Trunk an eye-length 
longer than the head, one third higher immediately behind 
the gill-opening than at the anal level, with a hog-back 
dorsal and an inflated abdominal curve. ‘Tail nearly twice 
the length of the united head and trunk, compressed and 
gently tapering. Eye large, circular, more than half the 
