310 SPOLIA ZEYLANICA. 
outwards from the mouth. When a considerable pellet has 
accumulated, one of the arms is used to carry the pellet 
downwards ; it is then passed backwards by the legs and 
deposited on one side. The first part of this latter movement 
is very rapid, and looks as if the crab was wiping his mous- 
tache, so to speak, with his hand. This feeding goes on 
4 
Are 299, 
IF 0 a 3 
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Pf. Ae 

Fic. 2.—Runways of Scopimera. 
continuously, and the crab works usually in a direct line from 
his burrow, thus cutting a kind of hollowed-out pathway 
about half an inch wide, which has the balls of ‘‘ eaten ”’ 
sand on one side. Whenever the crab emerges, it appears 
to go down the pathway and commence feeding. Thus, the 
smooth sand left by the receding tide is soon covered with 
lines and piles of pellets of sand, separated seemingly by 
pathways leading to the burrows of the crabs. The burrows 
are close together, so that the pellets may be heaped 
