Rhopalocera from the Australian region. 169 
wing-sheaths dark reddish brown, with the nervures 
well-marked. 
Weight of larva 1641s grains, of chrysalis 82s: grains. 
Ornithoptera urvilliana, Guér. (Pl. VI., fig. 1). 
Length of full-grown larva from 55 to 60 mm. ; com- 
paratively short and obese; tapering towards each 
extremity ; central segments much thickened; velvety 
black; head shining black; second segment crowned 
with a triangular black shining plate through a trans- 
verse slit, in which, when the larva is irritated, it pro- 
trudes two rather short, blunt, carmine, nuchal ten- 
tacles ; a subdorsal row of eleven fleshy spines, black at 
their base and tips, and carmine between, except upon 
the eighth segment, where the base of the spine is pure 
white and runs into an oblique white stripe a little 
beyond the spiracular region; upon the third, fourth, 
and fifth segments there are intermediate spines of the 
same colour; a subspiracular row of black spines curved 
upwards; spiracles small, pale yellowish white; legs 
and prolegs black. 
Chrysalis does not differ from that of preceding species. 
Papilio erithonius, Cram. 
This species appears to be rare in the neighbourhood 
of Sydney. I only saw it once, on September 27th, 
1882, in the Botanical Gardens, settled on a verbena, 
and failed to catch it. On December 13th I met with it 
commonly in the Botanical Gardens at Brisbane, but it 
was then passing. In November and December, 1884, 
it was abundant at Port Moresby, New Guinea, and I 
found larve of all sizes feeding exposed upon a species of 
Salvia, and bred a fine series. It was not uncommon at 
Thursday Island, in the Torres Straits, at the end of 
April, 1885. 
It is a rapid-flying butterfly, but is not difficult to 
catch when it is engaged fluttering among the Salvia 
bushes. It is also fond of settling by the margins of 
dirty puddles. The egg, which is perfectly globular and 
pale straw-colour, is deposited upon the upper surface of 
the leaves. The young larva is black, with a shining 
black head, and clothed with minute black spines. After 
