1869. ] SURGEON F. DAY ON INDIAN FISHES. 525 
Teeth flattened, in a single row in both jaws, none on vomer or 
palate. 
Fins. Dorsal commences opposite the posterior third of the 
pectoral, which latter is horizontal in its external, and vertical in its 
internal half. Dorsal and pectoral spines enveloped in skin, the 
pectoral much the strongest. The external two-thirds of the ventral 
is horizontal, its internal third vertical ; the two fins at their bases 
are separated by a distance asunder which is equal to two-thirds of 
their length. The external ray is thickened and enveloped in skin. 
The anal is situated midway between the root of the ventral and that 
of the caudal. Adipose dorsal very low, extending from opposite 
the posterior extremity of the ventral to the upper margin of the base 
of the caudal. Caudal cut square. 
Lateral line passes along the middle of the body. 
Colours. Deep leaden, the skin being everywhere covered by 
minute elevations, which during life were probably yellow. 
Two specimens, 5 and 6 inches long, are in the Calcutta Museum, 
taken at Hotham, and presented by Dr. J, Anderson; there are also 
two more from Ponsee, China. 
Exosroma BiyTuu, n. sp. 
D. 3/004 Bal/lte No Soy BP C0ls: 
Length of head nearly 4, of pectoral 2, of caudal ;%; of the total 
length. Height of the head 4,, of body + of total length. 
Eyes small, on upper surface of head, and in the centre of its 
entire length. 
Width of head equals its length. 
Nasal cirri about three times as long as the orbit. Maxilla ex- 
ternally dilated into a fleshy appendage, but without cirri. Lips 
thick and reflected round the mouth. ‘Two pairs of cirri on the 
symphysis of the lower jaw, placed at some distance asunder, the 
outer slightly the longest. Mouth inferior; snout broad. 
Teeth in both jaws. 
Fins. Pectoral subhorizontal, its rays plaited below, it arises 
under the branchial aperture, which is entirely superior. Dorsal is 
slightly anterior to the ventral, its spine is weak. Ventral sub- 
horizontal. Caudal slightly forked, its lower lobe the longest. 
Colours. Brown. 
Two specimens, 24 inches long, exist in the Calcutta Museum. 
Exosroma LABIATUM, M‘Clelland. 
Glyptosternon labiatus, M‘Clelland, C. J. of N. H. ii. p. 588. 
Dr4/0n Bele aMeGs a. 1/9. -C. 17. 
Length of head 1, of pectoral 1, of caudal 4 of the total length. 
Height of head 4, of body + of the total length. 
Nasal cirri arise between the nostrils, and reach the end of the 
snout. The maxillary cirrus extends to the pectoral fin. Jaws in 
the form of a double crescent or @& shape. ‘The two lips broad and 
continuous, widest laterally aud inferiorly. The lower lip is in the 
