AST On TH, BUTTHRELIES OF BORNEO. 115 
Kina Balu (Waterstradt); Sandakan (Pryer); Labuan 
(Low and Wahnes) ; Sarawak: ulu Lawas and Marapok Mts., 
Malinau, Kuching and Santubong (Sar. Mus.). 
Distribution; Indo-Malaya to Java. 
Apparently rather local in Sarawak, but plentiful where it 
occurs. 
The upperside pattern! is so remarkably like that of the 
female Lycaenopsis haraldus, that | am inclined to think that 
these two forms, together with the female Castalius ethion and 
one or two other Lycaenopsis females (e.g. L. lingga, L. son- 
chus), form a mimetic association (pseudaposematic, 1.¢., ilus- 
trative of the Batesian hypothesis, in which the Lycaenopsids 
are probably palatable and gain protection by mimicking the 
distasteful Castalius species) .* 
Genus, Potyommatus, Latreille. 
365. Polyommatus baeticus, Linn. 
Papilio baeticus, Linnaeus, Syst. Nat. ed. XII. i. p. 789 
(UO) 
Mt. Kina Balu (1200-1500 m. Waterstradt) ; Sandakan 
(Pryer) ; Sarawak: Buntal and Kuching (Sar. Mus.). 
Distribution; Europe, Africa, Asia through Malaya to Aus- 
tralia and the Hawaiian Islands. 
There are several records of its migratory habits and that, 
together with the fact that the larva can subsist on many 
leguminose plants, shows presumably why it is so widely dis- 
tributed. | 
The series in the Sarawak Museum was taken at Buntal and 
Kuehing in 1894 and 1896; after that no further specimens 
seem to have been captured until March and April of this 
year (1911) when it was met with by no means rarely in the 
vicinity of Kuching. 
Sub, Family If. CURETIINAE. 
Genus, Curetis, Hiibner. 
This genus has provided much material for discussion on the 
relative values of the species described under its name; and to quote 
1. The upperside colouring in both species is a plain but striking pattern 
of black surrounding a broad discal white band across both wings. In the 
underside they differ widely : haraldus is a somewhat typical Lycaenopsis form, 
while the pattern of edna is the typical black and white blotched pattern of 
Castalius. 
2. The only other suggestion of mimicry among Bornean Lycaenidae, 
that I can find comes from Mr. Shelford, who regards Thrix gama as a mimic 
of Hooxyl?des tharis, and the two species, Poritia platent and Araotes lapithis 
as mimics of the common species, Drwpadia boisduvalii var. atra and Biduanda 
thesmia. In commenting thereon, he writes, ‘‘I am, however, quite certaon 
that H. tharis, D. boisduvalii and B. thesmia are distarteful species, whilst the 
great rarity of the mimicking species points to the conclusion that they are 
Batesian rnimics.’’ Proc. Zool. Soc. Loral. 1902, p, 263). 
R, A. Sac., No, 60, I91I. 
