LIFE-HISTORY OF THE COCONUT BEETLE 189 
‘ No holes could be found in the ground near it, or one might 
have concluded that insects unearthed it. 
£ The only suggestion I could think of was that it might 
be a mushroom spawn, as on the spot where it melted fungi 
sprang up the next night.’ 
ON SOME STONE IMPLEMENTS 
By C. W. Hobley 
About two years ago some stone implements were lodged 
on deposit at the Society’s Museum by a Mr. Harrison, who was 
then serving in the locally recruited military forces. These 
implements were, it is believed, collected in British East Africa, 
but the depositor left no information as to locality. They are 
interesting on account of their being much larger than any 
other implements previously found in the Protectorate. They 
are all axes or bouchers, except one hammer stone, and the 
flaking is very bold, but all the specimens are unfortunately 
water- worn, which detracts from their scientific value, as it 
is not so easy to determine the type of workmanship. They 
are made of the type of Nepheline-sanidine basalt, which occurs 
on the Yatta Plateau, east of Donyo Sapuk, and runs along the 
eastern bank of the Athi River. A plate showing some of the 
specimens is given. 
LIFE-HISTORY OF THE COCONUT BEETLE 
Editor 
The beetle, Oryctes monoceros , is a great pest of the coconut 
plantation at the coast. 
The adult insect holes down into the trunk, and lays its 
eggs ; the larvae hatch out and feed on the interior of the 
stem, retarding its growth and often killing young plants. 
