erse, slightly bent, white band runs from near the outer edge close
to the tip, to near the middle of the wing; wings fringed with greyish
and black; under wings brownish black, with fulvescent orange spots and a
band, one small spot somewhat transverse, near the middle, beneath this a
broadish band extends from the anal margin nearly to the outer side of
wing, which is divided by a brown line, leaving an irregular squareish
spot, attenuated towards the outer margin; on the margin are three
differently-shaped dots beginning from the internal margin, and in one of
the specimens are four slight lunules, growing fainter as they approach
the outer margin. Beneath, upper wings with two transverse fulvescent
orange bands, one near the centre, the other at the tip, broadest
externally, with three black spots, the outer largest running into it
near the margin, interiorly it is much contracted ending in spots; the
base of the wings is yellowish grey, under wings yellowish grey at base,
otherwise very similarly marked, the outer part of the orange band having
two longitudinal whitish lines on it; antennae at base fringed with
white; club brown. Body above silky yellowish brown; borders of segments
lighter; beneath, greyish white.

Inhabits King George's Sound. Capt George Grey.

This seems to belong to a new genus not far removed from Castnia or
Coronis.

Hecatesia thyridion, Feisthamel. Illustration 25 Insects 8.

1. Hecatesia thyridion female.
1a. do. male upper side.
1b. under.
1c. fenestra in wing of male.
1d. section of fenestre.
2. Hecatesia fenestrata male.

Lepidopt. Voyage Favorite Supplement plate 5 f. 1 male.

Female alis longioribus, maculis albis triseriatis alarum anticarum
majoribus, nulla macula diaphana fenestrata ad costam.

The genus Hecatesia was founded by Boisduval in 1829,* upon a singular
Zygenidous insect sent to Latreille by Mr. Alexander Macleay, from New
Holland, in some part of which it does not seem to be uncommon.

(*Footnote. Essai sur une Monographie des Zygenides page 11.)

The species H. fenestrata Boisduval (l.c. page 11 plate 1 f. 2) was
brought by Mr. Hunter, Surgeon of Captain King's expedition, and by him
presented to the British Museum. Another species has been described by
the Baron Feisthamel in the voyage of the Favorite (page 19 plate 5 f. 1)
under the name of H. thyridion.* Of this species there are specimens in
the collection presented to the British Museum, and I take th