470 
Mr. J. J. Walker on 
with that of the preceding. The form of the $ , which 
resembles the ^ in markings, is as common here as the 
one largely marked with white and red on the hind wings, 
originally described by Linn^us as P. polytes. The larva 
is common on orange, lime, pumilo {Citrus decumana) , 
and other trees of the orange tribe. A fine large form 
of this species occurs commonly at Shanghai and in the 
Chusan Islands. 
98. Fajpilio erithonius. 
Papilio erithonius, Cram., Pap. Exot., iii., t. 232, 
figg. A. B. (1782). 
Moderately common in Happy Valley and else- 
where, and very partial to the flowers of Lantana camera. 
The ground colour of most of the Hong-Kong specimens, 
especially of the underside, is much fuller and deeper 
than in those I have seen from India and elsewhere. 
99. Papilio clytia. 
Papilio clytia, Linn., Mus. Ulr., p. 296 (1764). 
Pap. dissimilis, Linn., loc. ext., p. 301. 
Yar. Pap. panope, Linn., Syst. Nat., i., 2, p. 782, n. 196 
(1767). 
Another fairly common species, especially in " Happy 
Valley " and at Kowloon, appearing on the wing at the 
beginning of March ; and the gaily coloured and con- 
spicuous larvae are often met with in May, on a species 
of Morinda which grows commonly along the roadsides. 
The pupa reminds one strongly of that of the genus 
Thais. P. panope, Linn., which is not very common 
(though perhaps often passed over as an Euploea, while 
P. clytia has on the wing a considerable, but less striking 
resemblance to one of the green Danaids), has been bred 
from larvae collected with those of P. clytia, and quite 
undistinguishable from them ; and I have seen specimens 
intermediate between the two forms. The specific 
identity of P. clytia and panope thus appears to me to 
be placed beyond question. 
