ULA LATA, pl. 6. f. 1.

Shell dark brown; half ovate; broad obliquely truncated, and scarcely
notched behind; covered with close regular very thin denticulated
concentric lamina, forming a paler external coat. The front ear rather
produced, with a distant inferior notch; internally pearly, with a broad
brown margin on the lower-edge.

Inhab. North and West coasts of Australia.

2. SPATANGUS ELONGATUS, pl. 6. f. 2.

Body elongate, cordate, with a deep anterior grove and notch; covered
above with minute hair-like spines, with scattered very elongated tubular
minutely striated spines on the sides; the anterior groves and
circumference of the vent with larger equal hair-like spines on each
side; the under surface with a triangular disk of similar spines beneath
the vent, and with elongated larger tubular spines.

Inhab. Western Australia.

Having only a single specimen completely covered with spines, it is
impossible to describe the form of the ambulacra or the disposition of
the tubercles. The lower figures represent the mouth and vent of the
animal in detail.

* * * * *

DESCRIPTION OF SOME NEW AUSTRALIAN LEPIDOPTEROUS INSECTS
BY EDWARD DOUBLEDAY, ESQ., F.L.S., etc.

THYRIDOPTERYX NIGRESCENS, pl. 5. f. 1.

Head densely clothed with long whitish hairs; thorax and abdomen with
black hairs; wings hyaline, the nervures and nervules brown, with a few
black scales: base of the anterior and abdominal fold of the posterior
more or less covered with black hairs; antennae and legs fuscous brown.

Exp. 10--12 lines.

The larva of this species forms a dwelling for itself, similar in form
and structure to that of its American congener, the EPHEMERAEFORMIS,
Steph.

CALLIMORPHA SELENAEA, pl. 5. f. 2.

Wings of a brilliant silvery white; the anterior traversed by a fulvous
band commencing at the base on the costa, which it follows for about
one-third of its length, then crossing the wings directly to the anal
angle, where it unites with a vitta of the same colour, extending from
the angle nearly to the base along the inner margin; this vitta is
bordered interiorly with thickly placed black dots; the transverse
portion of the fulvous band is bordered on both sides with black, and has
a sinus about the middle; cilia fulvous; posterior wing with a black spot
near the outer angle: below, the wings are white, except the cilia of the
anterior, and a large blotch, red anteriorly, black posteriorly, near the
outer an