(*Footnote. Described (but not figured) by Mr. Westwood, in the
Transactions of the Entomological Society of London, New Series, Volume 1
page 175 1851, from Mr. M.'s specimens in the British Museum. Mr. W. felt
anxious to describe this striking Drusilla.)

Eusemia mariana, Tab. 4 fig. 5.

E. alis coerulescenti-nigris; anticis albo-fasciatis et maculatis,
posticis croceo-maculatis.*

(*Footnote. Filiae meae "Marian Frances White," speciem hanc pulchram
d.d. descriptor.)

Upper wings black, with a slight bluish tinge; a wide band extends across
the wing before the middle; it is white with a slight yellowish tint, at
the lower edge of the wing it is abruptly narrowed; behind the middle of
the wing, and between it and the tip, are from five to six pale yellowish
white spots, the four or five outermost the smallest, and one or two of
them sometimes obsolete; between the base and the band a narrow bluish
grey line extends across the wing, and behind the band, at an equal
distance, there is another short, waved, bluish grey line running down to
the inner margin. The margins of the band and spots are bluish grey. The
lower wing is narrowly black at the base, with a transverse band of a
king's yellow colour; this is the widest on the inner edge, near its
outer end there is an angular black spot; the apical half of the wing is
black, with numerous king's yellow spots arranged in two lines, two spots
about the middle connected and notched with black. Head, thorax, and base
of abdomen black, rest of abdomen of a king's yellow colour.

Mr. Macgillivray took two specimens of this fine species. One flew on
board when the ship was to the north of Cape Weymouth; the other was
taken at Cape York: the figure is of the natural size.

Cocytia durvillii, Boisd. Monog. des Zygenides, t. 1, fig. 1.

This is an abundant species in the Louisiade Archipelago, flying on shore
in the daytime among trees (as D'Urville remarked it did in New Guinea);
and it frequently came on board the Rattlesnake, even when distant from
the shore two or three miles. It flies heavily like a moth, and is easily
caught. This beautiful insect is one of the finest found by Mr.
Macgillivray. Only three specimens are recorded: those discovered by
Admiral d'Urville, and described by Dr. Boisduval; Mr. M. brought home
two, deposited with the rest of his collection in the British Museum.

CRUSTACEA. MALACOSTRACA: DECAPODA.

Ommatocarcinus macgillivrayi. Tab. 5 f