PAPILIONI^^^. 
207 
the crimson spot is sometimes wanting in West-African examples, 
and the South-African Museum possesses a Gold Coast $ in which 
not only is this the case, but the confluence of the band and stripe of 
the hind-wing takes place about the middle of the discoidal cell. 
As a rule, South-African specimens have the greenish markings 
paler and the dark markings of the under side less developed, espe- 
cially the hind-marginal nervular marks in the fore-wings and the 
disco-cellular spot in the hind- wings. 
This Papilio is essentially a Tropical form, and only enters the South- 
African Sub-Region on the north-east boundary. It is, however, as Mrs. Mon- 
teiro informs me, numerous at Delagoa Bay. On the Natal Coast it seems to 
be very rare, Colonel Bowker having met with but two or three specimens. 
One of these, a very fine ^ , presented by him to the South-African Museum, 
is noted as "obtained, just out of pupa, from Mrs. Watts, of D'Urban, end of 
October 1878." 
Localities of Fajnlio Anthcus. 
I. South Africa. 
E. Natal. 
a. Coast Districts. — D'Urban {J. II. Bowlcer). 
H. Delagoa Bay. — Louren9o Marques (il/rs. Monteiro). 
I. " Inhambane." — Felder. 
II. Other African Regions. 
A. South Tropical. 
a. Western Coast. — " Angola (/. /. Monteii'o)." — Druce. 
h. Eastern Coast. — "Zanguebarand Zanzibar (T^a^ra^/)." — Oberthiir. 
5 1. Eastern Interior. — " Nyassa (Hewitson Coll.)." — Kirby. 
B. North Tropical. 
a. Western Coast. — " Gaboon (llieorm)." — Aurivillius. Fernando 
Po Bourlie). Gold Coast (/. M. Pask). Sierra Leone. — 
Coll. Brit. Mus. 
302. (3.) Papilio Porthaon, Hewitson. 
$ Papilio Porthaon, Hewits., Exot. Butt., iii. pi. 2, If. 21, 22 (1865). 
Exp. al, {$) 3 in. 4 lin. ; ($) 3 in. 4-5 lin. 
Closely allied to P. Policencs and P. Anthcus, Cram. 
$ Brownish-black, ivith clidl-whitish, slightly greenish -tinged stripes 
and spiots ; common basal stripe as usual ; sub-hasal stripe very narrow 
in fore-ioing, hut rather wide and with a marlccd disco-cellular expan- 
sion in hind-iving ; submarginal series of spots well developed (as in 
Anthcus) ; cdl those in hind-wing outwardly bounded with well-marked 
hoary-grey lunular marks. Fore-vnng : three disco-cellular transverse 
stripes, extremely narroiv, strongly loavcd, the outermost one rather 
sharply angulated ; spot in cell near extremity, as in Policencs ; discal 
band of spots more as in Anthcus, the upper four being larger than in 
