GALATHEIDiE. 
85 
All the Crustacea of this suborder are essentially swim- 
mers. They walk but little, and do not leave the water. 
The abdomen and the great fan-like tail are the principal 
organs of locomotion. 
Tam. GALATHEIDjE, M. Edw. 
Outer antennae without movable plate. Body depressed ; 
the fifth pair of legs very slender, not fitted for locomotion, 
and folded back above the base of the preceding pair. The 
carapace is depressed and rather wide, but is longer than 
broad; it ends in a beak which projects more or less, and 
covers the base of the eye-peduncles. The front legs are 
large, and terminate in a well-formed pair of fingers. The 
abdomen is as wide as the carapace, and longer than that 
part. This family seems to connect the Macroura and Ano- 
moura ; and indeed, by many naturalists it is regarded as a 
portion of the Porcellanida . Yery little is known of the 
habits of the species of this family. A curious species, the 
Grimothea gr eg aria, was found, on Captain Cook's voyage, 
in great shoals off the coast of Patagonia, where, from the 
softness and delicacy of its covering, it must form most 
acceptable food to many a fish and sea-bird. Mr. Couch, 
in a communication to Professor Bell on the habits of one 
