of the Arabian Sea . 
303 
8. Scopelengys tristis , sp. n. 
B. 8. D. 12. A. 13. P. 15. Y. 8. 
Head and body rather elongate, compressed. Eye situated 
high up, very small ; its major diameter is a little more than 
^ the length of the snout, which is about ^ the length of the 
head, which is not quite ^ the total without the caudal. 
Mouth wide, its cleft very oblique, approaching the vertical, 
with the lower jaw projecting in repose ; the maxilla, which 
is widely dilated behind, measures more than half the length 
of the head ; the premaxilla is a stout bone, firmly attached 
to the maxilla, which it equals in length. Acute villiform 
teeth, in rather broad bands uncovered by the lips in the pre- 
maxillae and mandible, in narrow bands in the palatines, and 
in a small patch on each side of the head of the vomer ; no 
teeth on the tongue. 
Gill-openings very wide ; gill-covers complete ; long close- 
set gill-rakers on the first arch. Pseudobranchiae rudimen- 
tary, consisting of three or four small lamellae on each side. 
The dorsal fin begins above the origin of the ventrals ; the 
whole fin is included in the anterior half of the body 
measured with the caudal. Adipose dorsal rather large, 
fimbriated. The anal fin begins a little more than a snout- 
length behind the posterior limit of the dorsal. Caudal 
forked. Pectorals entire, about as long as the maxilla, and 
reaching just beyond the origin of the ventrals ; they arise close 
to the ventral profile. 
Eight large pyloric caeca. No air-bladder. 
Colours in the fresh state apparently uniform black 
throughout. 
One specimen, 6f inches in. length. 
Station 104, 1000 fathoms. 
Family Alepocephalidae. 
Bathytroctes, Gthr. 
9. Bathytroctes squamosus , sp. n. 
i Snout short. Eye very large. The entire head uniform 
intense black ; apparently some scales on the opercles. 
B. 7. D. 17(18). A. 17(18). C. circ. 35. P. 10. 
V. 9. L. lat. circ. 50. L. tr. I. 
9 
Head with its ventral profile almost horizontal, its dorsal 
