A LIST OF THE BUTTERFLIES OF BORNEO. 10S 
Exp. al, 31 mm. 
Type, 2, Kuching, Sarawak (Sar. Mus.). 
be 
328. Nacaduba pavana, Horst. 
Lycaena pavana, Horsfield, Cat. Lep. Mus. KE. I. C. p. 0% 
(1828). 
Sandakan (Pryer); Kina Balu (Waterstradt) ; Labuan 
(Low) ; Limbang, Malinau, Banting, Kuching, Mt. Santubong, 
Simatan, Mt. Matang and Mt. Penrissen (Sar. Mus.) 5 South 
Borneo (Ind, Mus.). 
Distribution: Sikkim, Assam, Burma, Sumatra and Java. 
In Sarawak it seems to be essentially a mountain species, 
for out of 16 species in the Sarawak Museum, 11 are from an 
altitude of 2,600 ft. to 3,500 ft. 
The females vary in the amount of iridescent blue in the 
hind-wing. In some there is-hardly any, while in one from 
Simatan the whole of the discal portion in both wings is blue. 
329. Nacaduba, bhutea, de Nicey. 
Nacaduba bhutea, de Nicéville, Journ. As. Soc. Beng. p. 
Pople hee 132.6 =(1833). 
Mt. Kina Balu (Waterstradt and Everett) ; Labuan (Low) ; 
Limbang (Sar. Mus.). 
Outside Borneo it occurs in Sikkim, 
I here follow Mr. Druce in accepting this and the next two 
species as three distinct species although Butler has thrown 
doubt upon the validity of NV. bhutea, and de Nicéyille upon 
N..aluta. A comparison of the male ancillary appendages as 
studied by Dr. T. A. Chapman in the genus Lycaenopsis (Cya- 
niris) would be of great value and interest. 
330. Nacaduba ardates, Moore. 
Lycaena ardates, Moore, Proc. Zool. Soc. Lond. p. 574, 
pl XV fee (1874). 
Lycaena nore, Felder, Verh. Zool.-hot. Ges. p. 282 
(1868). 
Sandakan (Pryer); Labuan (Low); Limbang, Quop, Ma- 
tang, Kuching, Santubong, ‘Tambak, Mt. Penrissen, Pangkalen 
Ampat (Sar. Mus.). 
Distribution: India, Ceylon, Andamans and Nicobars; 
Malaya and Philippines. 
The tailed form is characteristic of Borneo; and it is fairly 
common in Sarawak all the year round. Staudinger records 
having received the tailless form from Labuan which was 
described by Felder as N. noreia. De Niceville, who saw the 
type of this last species, pronounced it to be the tailless form 
of N. ardates. Bingham does not support. this view. 
R. A. Soc., No. 60, T91I. 
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