of the Bay of Bengal &c. 453 
A specimen, very badly mutilated and not unequivocally 
identifiable, from the Andaman Sea, 8 miles south-east of 
Cinque Island, in 500 fathoms. 
Family Halosauride. 
Haxosaurus, Johnson. 
Halosaurus anguilliformis, sp. nov. 
Be 2 2s ee Wee Neer: tr. 
All the tissues fragile. Head long, its length exceeding 
the distance between the gill-opening and the base of the 
ventral fins. Body subcylindrical, its height being but two 
thirds the length of the snout, which is half that of the head 
measured to the end of the occiput. Snout tapering, produced 
just half its length beyond the mouth. Suboperculum very 
large; the whole opercle covered with a thin, tough, whitish 
membrane, which roofs over two very wide, parallel, muci- 
ferous channels, which extend, one from the preorbital to 
behind the eye, the other from the symphysis of the lower 
jaw to the hinder edge of the suboperculum. Diameter of the 
eye two fifths the length of the postocular portion of the head 
and exceeding the width of the flat interorbital space. The 
nostrils are small perforations immediately before the front 
angle of the eye. Mouth inferior ; the maxilla barely reaches 
the vertical from the front margin of the orbit. Teeth in 
broad villiform bands in the jaws and hyoid, in a crescentic 
band on the palatines, and in narrow tapering bands on the 
pterygoids. Giull-openings wide; gill-membranes entirely 
separate ; four gills, with narrow lamin; fourteen gill-rakers 
on the first arch, of which the middle ones are long and bacil- 
late. Body covered with large cycloid scales; head, excepting 
the cheeks and upper part of opercles, scaleless. ‘he scales 
of the lateral line are a little enlarged, being rather over a 
quarter of an inch in diameter and perforated in the centre. 
The lateral line shows as an opaque white cord curving 
abruptly downwards from the base of the pectoral fin to the 
lower profile of the body, along which it runs. Dorsal and 
anal fins with scaly bases. Pectorals arising well above the 
middle line of the body, long and narrow, reaching nearly to 
the base of the ventrals. 
Colours in spirit:—Pinkish brown, opercles and cheeks 
silvery, gill-membranes black ; fins light grey, posterior part 
of anal black. Some bright opaque-white masses show 
through the bones of the vertex of the head; a large sagitti- 
