AN EXPEDITION TO MOUNT BATU LAWI. Li 
30. Platysmurus aterrimus, Temm. 
One specimen from Salindong, June. A common bird 
in Sarawak; not found outside Borneo, though an allied 
species occurs in Sumatra and another in the Malay Penin- 
sula and Sumatra. 
APPENDIX VI. 
Butterflies taken on the Batu Lawi Expedition 
By wd. Cy MouLTON: 
At first sight the total of 113 different species recorded com- 
pares very favourably with other lists compiled on similar ex- 
peditions* and this was no doubt due to the diverse nature of the 
regions passed through, including as it did perhaps the two best 
kinds of country for butterfly-collecting, namely, (1) stony or 
sandy banks of rivers and small sunny streams bordered in each 
ease with tall virgin jungle, (11) cleared mountain-tops. In the 
former class one meets a great number of Papilios, Pierimes and 
small Lycaenids, usually congregated together in crowds on wet 
patches of sand, on wet clothes drying in the sun, or on refuse. In 
the latter class of country we were fortunate enough to have one 
beautiful fine day on the top of Mt. Selinguid, alt. 4,250 ft. For 
the greater part of our land journey we were walking in deep dark 
jungle and usually in rain, so that the butterflies we saw then were 
remarkably few. ‘The list might easily have been larger if ex- 
amples of more common species had been taken, such as Mycalesis, 
Erites, Hlymnias, Amathusia, Neptis, Athyma, Adolias, Futhaha, 
Tranaecia, etc., etc., but I have not included them as I did not know 
them well enough to identify specifically with any certainty in the 
field and so made no notes of their occurrence, although represent- 
atives of those genera were certainly seen. 
As did the birds, so do the butterflies fall into two natural 
groups (i) common, widely distributed, typical Malayan species 
mostly taken on the river journey (Limbang to the Madihit) and 
(11) rare mountain species taken on the land journey between the 
head-waters of the Madihit and Batu Lawi, alt. 2,000-5,600 ft. 
We may refer 75 to the former class and mest of the remaining 38 
to the latter. The comparatively large totals of 50 different Lycae- 
nidae and 16 different Pierinae are perhaps worthy of comment. 
considering the short time spent in actual collecting, while the 
totals of 21 species of Nymphalidae and 14+ Hesperidae can only be 
characterized as distinctly poor. 
*In a month’s collecting on Mt. Penrissin, Sarawak, Mr. Shelford reecrded 
06 different species of butterflies (Journ. S r, Br., Roy. Asiat. Soc. No. 35. pp. 
29-36 1901) 
R. A. Sac., No. 63, 1912, 
