468 
Mr. J. J. Walker on 
wings, on the borders of streams, for the purpose of 
drinking the moisture, and is then almost completely- 
invisible, as the colour of the underside, which is 
minutely irrorated with greyish-brown on a very pale 
fawn-coloured ground, harmonizes exacfcly with that of 
the wet sand on which the insect rests, and furnishes one 
of the most beautiful examples of protective coloration 
with which I am acquainted. Large and darkly coloured 
specimens occur in the middle of summer. 
91. Papilio aristolochise. 
Papilio aristolochise, Cram., Pap. Exot., ii., t. 128, figg. 
A. B. (1779). 
There are specimens of this butterfly in the small local 
collection at the City Hall Museum, and in one or two 
others in Hong-Kong, but I have not taken it myself. 
The species occurs commonly in the Chusan Islands. 
92. Papilio paris, 
Papilio paris, Linn., Mus. Ulr., p. 184 (1764). 
This and the following are among the most conspicuous 
and beautiful butterflies of Hong-Kong, and P. paris is 
to be found commonly from the beginning of February 
onwards ; Hibiscus ros a- sinensis and Lantana camera 
being its favourite flowers. Freshly emerged specimens 
were seen on February 5th, 1892. 
93. Papilo hianor, 
Papilio hianor, Cram,, Pap. Exot., ii., t. 103, fig. C. 
(1779). 
Perhaps somewhat more common than the preceding, 
and similar in its haunts and habits, but rather slower 
and heavier in flight. Females of both species are very 
rare. The first fresh specimens were noticed on March 
5th, 1892, and another brood, considerably larger in 
average size, appears in May. I took P. hianor in the 
Chusan Islands in July and August, 1892, but did not 
meet with P. parts there. 
