; I
and beyond these there is an outer row consisting
of the fiA'e pairs of thick radial shields and live
ohlong plates occupying the interhrachial spaces.
The inouth-papillce are entirely coalesced into a
continuous calcareous border; the mouth-shields are
Fig. VK-Oplnomiisinm pulrhdltim, Wvvi i .i.e T iuimson. Oral aspect of the di.sc. Seven tinie.s
the n atural size. (No. 87.)
diamond-shaped and rather small; the side mouth-
shields, on the contrary, are unusually large. The
first four or five under arm-plates are shield-shaped
and rather large, with n^ell-inarked rounded tentacle-
scalcs; 1)Lit they suddenly become small ivhen the\"
reach the narrow p a rt of the arm, and the tentacle-
scales disappear. The side arm-plates on the proximal
joints of the arms are very long—-so long th a t tliose
of one arm nearly meet those of the two adjacent
arms, one or tivo small irregular plates only intervening
; and the lower surface of the disc is thus
made up to a great extent of the expanded bases
of the arms; The side-plates on the distal arm-joints
retain their unusual length, h u t they are directed
outwards toAvards the end of the arm, and the inner
edges of the plates of each pair are apposed thro u g h out
nearly their Avliole length hotli ahove and heloAv.
Fio. W .—Geratias uranoscopus, Murray. Natural size. :_No. 89.)
The upper arm-plates are small and diamond-shaped ;
the arm-spines are of moderate size—usually three
on each side arm-plate. I relegate this pretty little
thing provisionally to the genus Opliiomiisiwn, suh-
ject to reconsideration.
TVe sounded again and took temperatures on the
22nd, and on the 23rd Ave sent doAvn the traAvl to a
depth of 2,400 fathoms Avitli a bottom of ‘ glohigerina-
ooze;’ along Avith a number of iiiAærtehrates this
haul yielded a very singular little fish of the Lopliioid
¡G/I1
.if ;■ *d 1
W
J \