is doing. As in all these 
arrangements, the anemone 
benefits by being carried 
to fresh hunting-grounds. 
One of the most aston- 
ishing of these arrange- 
ments is the case of a 
shore crab (Melia), also 
from the Indian Ocean. 
It may or may not be a 
reciprocal affair—there is 
at present not sufficient 
evidence to decide—but it 
is at least a remarkable 
example of crustacean in- 
telligence. When Mobius 
some years ago told how 
the crab seeks about for 
certain anemones, and goes 
hunting with them in his 
pincer claws, naturalists at 
home received his account 
WVlarvels of the Untverse IEG) 
[bu 7. Carreras. 
SPIDER AND YOUNG. 
The female Pardosa carries her egg-cocoon until the eggs are hatched; then accommodates 
the young spiders upon her back until they are fit to look after themselves. 
with some reserve; but more recently Borrodaile has fully substantiated the story. The crab 
detaches the anemones from the rock and goes about under the water with one in each pair of pincers. 
The anemone catches small creatures that they come across, and the crab hooks his share out of the 
anemone’s mouth with the claw of his first walking limb. Mobius says that if the crab be robbed 
of its anemones, it appears 
to be greatly distressed, 
and hunts about for them. 
Our own Thornback 
Crab, the largest of our 
native species of Spider 
Crab, has its upper shell 
thrown into valleys and 
mountain peaks, and 
closely studded with hook 
tipped spines and bristles, 
which serve to keep on 
the heterogeneous coating 
of rubbish with which it 
delights to disguise itself 
Not only does it use dead 
matter, such as severed 
branches of seaweed, for 
this purpose, but it also 
deliberately plants living 
things, such as anemones 
and sponges, in the val- 
leys. We have frequently 
[By T. Carreras. 
SPIDERS AS AVIATORS. 
The young spider standing on tiptoe emits a considerable length of gossamer from its 
spinnerets, and when there is sufficient pull from this buoyant line, lets go and seizes 
the line with all its legs. In this way the minute spider travels great distances through 
the air. 
81 
