214 Mr. A. Alcock on the Bathybial Fishes 
rudimentary on the lower jaw. Teeth in narrowish villiform 
bands in jaws, vomer, and palatines. Tongue large. Oro- 
branchial cavity intense black throughout. Gill-opening 
moderately wide, the membranes rather broadly united below 
the isthmus anteriorly ; gill-laminae very narrow ; ten long 
pointed scabrous gill-rakers on the first branchial arch, 
besides some rudimentary ones above and below. 
Head and body covered with small deciduous scales ; 
apparently 22 rows between the dorsal fin and the vent. 
Lateral line indistinguishable. 
Vertical fins united ; the dorsal begins just behind the 
vertical through the base of the pectoral, its longest rays — 
about the middle of the fin — are rather over one third the 
maximum body-height and exceed the corresponding anal 
rays in length. Caudal long and pointed. Pectorals entire, 
pointed, as long as the head without the operculum. Ven- 
trals jugular, arising from bony bases which are distant by 
a wide interspace equal in width to one third the length of 
the head ; each consists of two filaments, of which the inner 
is much the longer, reaching beyond the origin of the anal 
fin. 
A bunch of about six slender caeca situated above the 
pylorus. Air-bladder present. 
Colours in the fresh state : — Uniform chocolate ; fins 
blackish ; throat and belly black, owing to the pigmentation 
of the peritoneum. 
Total length 4 t \j inches. 
Hah . Vide Station 97. Three specimens. 
When brought on board the skin of the head was injected 
and spotted with small capillary haemorrhages. 
Family Macruridae. 
Mackurus, Bloch. 
Subgenus Macrurus, Bloch. 
16. Macrurus Hoskynii , sp. n. 
B. 6. D. 11. A. circ. 90. V. 9. P. 19-20. 
Length of the head about one fifth of the total, its height 
about two thirds, its breadth not quite half, its length. 
Snout subtrihedral, its length almost equal to the diameter 
of the large circular eye, which is about one fourth the length 
of the head ; interorbital space slightly convex, its width 
one fourth greater than that of the eye. Nostrils close 
together in front of the angle of the eye, the posterior very 
