309 
of the Arabian Sea . 
Stomach subsiphonal ; intestine long, coiled in a spiral ; 
four small pyloric casca, arranged in a ring. No air-bladder. 
Reproductive glands very large, apparently discharging in 
the male (?) through a well-developed post-anal papilla. 
Colours in the fresh state Head snow-white, iris black, 
body chocolate, fins blackish grey ; oro-pharyngo-branchial 
membrane and entire peritoneum intense black. 
One specimen, apparently a male near maturity, measuring 
11 inches in length. 
Station 104, 1000 fathoms. 
This fish differs from all described Alepocephalids in 
having the pseudobranchiae quite rudimentary and the ante- 
rior bones of the head produced into a snout like that of 
Aulastoma ; but its affinities are quite clearly Alepocephalid. 
Family Halosauridae. 
Halosaurus, Johnson. 
13. Halosaurus affinis , Gthr. 
Halosaurus affinis , Gunther, Ann. & Mag. Nat. Hist. 1877, vol. xx. 
p. 444 ; and Zool. Chall. Exp. xxii. pp. 241, 242, pi. lix. fig. B. 
Two specimens, measuring respectively 18f and 19 inches 
in length, answer the diagnosis of this fish. 
The radial formula is 
B. 11. D. 11-12. A. circ. 200. P. 13. Y. 1/8. 
There are nine large pyloric caeca, arranged in a row like 
the teeth of a comb along the first f inch of the intestine, 
and embracing the ascending limb of the stomach. 
Station 104, 1000 fathoms. 
14. Halosaurus HosJcynii , sp. n. 
Closely allied to the preceding. 
B. 10. D. 11. A. circ. 175. P. 13. Y. 1/8. 
Head naked, its length J of the total, and exceeding the 
distance between the gill-opening and the base of the ventral 
fin by about an eye-length. 
Length of the snout 2 } in that of the head, the preoral 
portion being not quite a half of the whole. 
The major diameter of the eye equals the width of the 
interorbital space, and is contained 7\ times in the head- 
length and just over 3 times in the length of the postorbital 
portion of the head. 
Ann . <& Mag . N . Hist . Ser. 6. Vol . vi. 22 
