298 Mr. H. J. Elwes’ catalogue of the 
Genera occurring in Occurring in Malay In Sikkim, but notin In North-west Him- 
Sikkim, but not in Peninsula, but not North-west Hima- alaya, but not in 
Malay Peninsula. Sikkim. laya. Sikkim. 
Parnassius, 3 Zea, 1 Hasora, 2 
? Badamia, 1 Isma, 3 Bibasis, 1 
Bibasis, 1 (? Halpe in part) Matapa, 4 
Capila, 1 Hidari, 3 Capila, 1 
Pizzola, 1 Casyapa, 1 Pizzola, 1 
Suastus, 3 Kerana, 1 Pithauria, 2 
Sarangesa, 1 — Baoris, 1 
Pamphila ?, 2 37 genera contain- Pterygospidea, 1 
Thanaos, 3 ing 70 species. Astictopterus, 1 
Cyclopides, 1 Barachus, 1 
Halpe, 7 a 
Taractocera, 1 43 genera contain- 
Isoteinon, 7 ing 65 species. 
Dharpa, 1 
Chaticneme, 1 
Barachus, 1 
49 genera contain- 
ing 107 species. 
This list proves very conclusively how great is the 
richness of the Sikkim butterfly fauna as compared with 
that of the adjoining countries, for we find both in the 
case of the Malay Peninsula and the North-west Hima- 
laya that the number of genera and species found in 
Sikkim, but wanting in these countries, is much greater 
than the number which they possess, but which are 
wanting in Sikkim. 
On the whole we may say that there is probably no 
place of so small an area in the Old World, and probably 
very few in the New, which can rival Sikkim in the 
variety and interest of its Rhopalocera, and probably 
this will apply to the Heterocera also. 
In the following catalogue I have endeavoured to 
avoid all unnecessary references, believing that these 
are out of place, except in a systematic work. I have 
cited Marshall and de Nicéville’s ‘ Butterflies of India’ 
shortly as ‘‘ Butt. Ind.,” the ‘Proceedings’ of the Zoolo- 
gical Society as ‘‘P.Z.§.,” the ‘Journal’ of the Asiatic 
Society of Bengal as ‘‘J.A.S.B.,” with the year of 
publication, but not the number of the volume. 
With regard to the species described by old authors, 
such as Linneus, Cramer, Fabricius, &c., I believe that 
it is now often impossible to be certain as to the origin 
