304 Mr. E. Doubleday on some new Diurnal Lepidoptera. 
Fig. 13. Systematic arrangement of the nervous system: a, cephalic gan- 
glion; 6, ventral ganglion; ce, anterior branch of nerves or pha- 
ryngeal commissure; d, posterior branch; e, anterior cephalic 
nerves, with their ganglionic protuberances; f, g, posterior cepha- 
lic nerves describing a loop; h, optic nerves with their ganglions k. 
Fig. 14. The eye, optic nerve and its ganglion, magnified ninety-five dia- 
meters: a, optic nerve; b, ganglion; c, eye; d@, cornea or crystalline 
lens, forming a rounded prominence; e, fibrils visible toward the 
circumference of the eye ; f, excavation in the skin of the head, in 
the interior of which the eye and the ganglion are inclosed. 
XXXII.—Descriptions of new or imperfectly described Diurnal 
Lepidoptera. By KEpwarp Dovs.iepay, Ksq., Assistant in the 
Zoological Department of the British Museum, F.L.S. &e. 
[Continued from p. 236.] 
Fam. PAPILIONID. 
Genus PAPILio. 
Tue description of P. Evan given in the last Number had scarcely 
passed through the press, when the Museum received a large and 
valuable collection of insects from Sylhet, amongst which were 
specimens of this species, up to that time unique in Mr. Harring- 
ton’s cabinet. One of these fortunately is a female, and I am 
therefore able to pomt out the characters in which this sex differs 
from the other. In size it is much larger, the expansion of the 
wings being full an inch and a half greater; the anterior wings 
are less faleate, their colour above much paler; the base is not 
shaded with fuscous, the spot on the disco-cellular nervule is more 
distinct, there are two or three irregular dark spots in the cell, 
the dark border is narrower and not quite of so deep a colour, the 
light fulvous spots are more distinct; the posterior wings are 
paler, the dark margin much narrower, the inner row of spots 
very distinct, the indentations and the tail pale fulvous, and the 
under surface is much paler. 
In addition to some species described by Mr. Westwood not 
previously in the cabinets of the Museum, this collection con- 
tained a new species remarkable for the form of its posterior 
wings, and connecting P. Protenor and Rhetenor with P. Ganesa, 
Bianor and the other species of that group which have some of 
the nervules covered with down towards the extremities. For 
this species I propose the name of P. Klephenor, under which it 
will be found described below. 
Whilst on the subject of the Indian Papiliones, I may remark 
upon an error in regard to three Indian species into which Krich- 
son, in his Report on Entomology for 1842, has fallen. I have 
not troubled myself to do this so long as the report remained in 
