94 CRABS AND INSECTS. 
window. One of these crabs (c, Fig. 105) is remarkable 
in having a pouch in which the female carries her young ; 
the sac is formed by a prolongation of the lateral plates 
of the abdomen. 
Land-Crabs.— 
Land-crabs are common 
on all shores, many, as 
the Ocypoda (Fig. 106), 
living in holes, hiber- 
nating in the winter, and 
"Fic. 106.—Ocypoda, a marine crab that mimicking the sand in 
lives on land. their absence of color. 
In the South the land- 
crabs, Gecarcinus (Fig. 107), that live in the bushes, are of 
various tints, equally protective among the leaves of the 
dead bay cedars and the fruit of the prickly-pear, about 
which they cling. They are all swift runners, and in 
Ceylon, a large land-crab is chased on horseback. 
Fic. 107.—Gecarcinus rusticola, a \and-crab. 
Notr—aAt St. Paul's rocks Professor Moseley observed the richly 
colored Grapsus, a land and water crab, carrying off young birds; and 
at Ascension Island the large land-crabs even steal young rabbits from 
their holes and devour them. 
