beyond the middle of it; the two discoidal veins in the male are brown on the upper side, and the edge of the upper side of the lower wings is brown.  The under side of the lower wings has a dark brown band at the base, widest close to the attachment of the wing and narrowing to a large ocellus which it surrounds in the form of a narrow brown ring; the black ocellus has a very small white pupil with a slight bluish crescent on the inside, and is surrounded by a fulvous ring; thcre is a second black ocellus nearer the hind edge than the middle, with a small white pupil and a wideish fulvous ring, separated from the white of the wing by a narrow brown ring; head, antennae, legs, and thorax in front brown; palpi fulvous.

The figures are of the size of nature, and carefully drawn by Mr. Wing.

(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.