Short Notes. 
A Swarm of Butterflies in Sarawak. 
On January 12th ult. a great flight of butterflies was ob- 
served at Kuching, Sarawak, at 1.30 p.m. All the individuals 
of the swarm belonged to the well-known species, C?rrochroa 
bajadeta, Moore (syn. ravana, Moore) ; in the male the wings on 
the upper side are bright chestnut in colour with the outer mar- 
gins of the fore wings broadly, of the hind wings narrowly, fus- 
cous, the under side is pale brown with darker markings and an 
oblique pale fascia; the female differs in small details only. A 
bright westerly wind was blowing at the time and the butter- 
flies flew before it all over the town of Kuching towards Mount 
Matang¢ in a continuous flood for about 15 minutes whilst strag- 
glers followed up in ever-decreasing numbers for the rest of the 
day. The colour of the insects, their prodigious numbers and 
their weak and wavering flight produced an effect that irresist- 
ibly reminded the beholder of a heavy shower of falling leaves 
on a gusty autumn day in England. The swarm or some part 
of it arrived at Mt. Matang towards evening and streamed up 
to the summit. At Sadong the same phenomenon was’ witness- 
ed at the same time on the same day as in Kuching but whether 
this was a separate swarm or merely one of enormous size sweep- 
ing over the whole area between Sadong and Kuching it is im- 
possible to say as I can get no records from irtermediate places. 
On the 13th between 1.30 and 2 p.m. another flighting was notic- 
ed in Kuching, but the number were infinitesimal compared to 
those flying on the 12th, and they did not attract the attention 
of many observers. Of 18 specimens captured on the 12th, 13 
proved on examination to be males, whilst only 5 were females; 
at the present time of writing—a month after the swarm was ob- 
served—this species is quite the most common met with in and 
around Kuching, but now nearly all the specimens captured are 
females. The rainfall of the N. HE. monsoon months has so far 
(October—January) been below the average (39.45 inches as 
R. A. Soc., No. 39, 1903. 
