NEPTIS. 191 
occurs at Ichaiig and C'liang-yan<;-, vory common at the latter locality, from 
June to August up to about 5000 feet. 
Although fiiii'ly constant on the upper surface, considerable variation is 
exhibited on the underside. The bulk of the specimens are of the typical 
form, and agree well with examples from the Amur. There are, however, two 
well-detincd forms which I described in the 'Entomologist' for 18U0 as var. 
themis and var. tlietis. 
Var. themiS. (Plate XVIII. fig. 8, 2 •) Fringes of primaries almost wholly white at the apex, 
and black from the fifth subcostal ncrvule to below first discoidal nervule ; there is no trace 
of fulvous on the outer margin of secondaries. Oil the under surface of primaries the spot 
between discoidal nervules is large, round, and without a trace of marking below it in next 
interspace ; the central band of secondaries terminates in a large white spot between the 
subcostal nervules, and there are no markiugs in the interspace above or between the band 
and discoidal streak, which in this form is distinctly white. 
Several specimens fi-om Cliang-yang, and a few from Moupin. 
Var. thetis. (Plate XVIII. tig. 10, S •) Identical with var. themis above, but beneath there is a 
white mark in interspace below the outer round spot of primaries ; the discal streak and sub- 
marginal band of secondaries are merely fragmentary ; the basal and terminal portions of the 
former only remain, and of the latter there are some traces towards outer angle. There is 
also a noticeable absence of brown clouding on secondaries, and the brown band posterior 
to the white central one is very narrow. 
Occurs at Pu-tsu-fong, Ta-chien-lu, and Cliang-yang. 
In some examples of the type-form the bands are very pale, almost white, 
but this is probably due to the insect having been on the wing some time. 
Dr. Staudinger*, who states that N. thishe is peculiar to Amurland, also 
records a white-marked form of the species from that region. 
Distribution. Amurland and Western and Central China. 
Neptis arachne. (Plate xvill. fig. 7, 6 .) 
Keptis arachne, Leech, Entomologist, xxiii. p. 38 (1890). 
Neptis giddeneme, Oberthiir, Etud. d'Eutom. xv. p. 9, pi. i. fig. 7 (1891). 
Itesembles N. heroe and also i\'. aspasia in the markings of upper surface, but it lacks the central 
streak of the former, and the apical spots are more clearly separated in the latter, whilst it 
differs from both in the rupture of discal streak from its continuation at second median fork. 
In this species the disconnection is effected, not only by the passage of the third median 
nervule, but by the interposition of a triangular patch of the ground-colour in the fork. 
Under surface bright chestnut-brown. Primaries ochreous at base and along costal fold, a 
* Horn, sur Lop. vi. 
