XXvli, Xxviii] Cala.) 
the ground, they assumed that orientation, and spread their 
wings flat on the ground with the head a little raised, making 
the greatest display of their colours, but chiefly appearing to 
desire to secure as vertical a sun ag circumstances allowed ; this 
might be different in the tropics. He wished to ask how and 
how far these two phases of a similar orientation were related. 
Professor E. B. Poutron congratulated the author on the 
many interesting facts and observations contained in his 
memoir. There was neither time nor opportunity to consider 
these in detail; but the speaker felt that he must express his 
deep interest in the principle suggested by Dr. Longstaff at 
the conclusion of his account :—that in the tropics there were 
many hours of daylight during which insects were at rest 
and their enemies active. It was clearly a principle of the 
utmost importance, which must be seriously taken into 
account in observing and recording bionomic data.* 
* Since the meeting of the Society on March 7, I have remembered the 
very interesting observations published in 1900 by Mr. N. Annandale, of 
the Indian Museum, Caleutta. The author, observing the habits of cer- 
tain Phasmide and of a beetle larva, is led to conclusions very similar to 
those reached by Dr. Longstaff from the habits of Lepidoptera. (‘‘ Notes 
on the Habits of Malayan Phasmide, and ofa Flower-like Beetle larva,” by 
Nelson Annandale, B.A., Proce. Roy. Phys. Soc. Edinb. 1900, No. xxix, 
pp. 439-444.) In this communication Mr, Annandale describes a dull- 
red species of Phasmid, Lonchodes, sp., nearly four inches long, which, 
in the full blaze of the mid- -day sun, is freely exposed on ‘‘ the upper sur- 
face of certain broad leaves such as abound in neglected hill clearings.” 
Even from below ‘“‘its shadow was perfectly visible thr ough the translucent 
tissues of the leaf.” 
“*T was quite unable to discover what became of them at night, for I 
never found them on the leaves either late in the afternoon or early in the 
morning. Most probably they remained concealed among the undergrowth 
except during the heat of the day. 
‘‘The Phasmid . . . is only conspicuous at certain times of day, when 
the sun is at its hottest and brightest: 273). At mid-day, the mammals, 
birds and amphibians of the jungle are at rest. They are not asleep, but 
they do not search actively for food, nor come out of the wood into the 
Cleaning snes e Lizards, of course, are generally most active when the 
sun is hottest ; but in these hill- clearings reptiles of all sorts are rare. 
I have a certain amount of negative evidence that the majority of 
Malayan Phasmide are most active in the middle of the day, being 
inclined to remain concealed in the early morning and late afternoon. 
. Too late or too early in the day, it was impossible to see a single 
stick-insect in the clearing ; and during my six months’ stay in Lower 
Siam, I never was able to discover any Phasmide of any species late in the 
afternoon.” Mr. Annadale however found a single specimen in the early 
morning clinging motionless, like an enormous Geometrid larva, toa blade 
of grass, and remaining ‘‘ absolutely still while the grass was broken off.” 
Towards the end of the paper Mr. Annandale describes the habits of a 
flower-like beetle-larva (apparently an Endomychid), which, “early in the 
