226 
LIFE, IN ITS INTERMEDIATE FORMS. 
which project from the shell, pour out a glutinous gum or 
cement, which hardens in water, and firmly attaches them. 
Henceforth tho animal is a fixture, glued by the front of 
its head to its support. Another moult now takes place ; 
the bivalve shell is thrown off, with the great eyes, and 
their U-like processes, and the little Cirriped is seen in its 
true form. It is now in effect a Stomapod Crustacean, 
attached by its antennae, the head greatly lengthened (in 
Lepas, &c.), the carapace composed of several pieces (valves), 
the legs modified into cirri, and made to execute their 
grasping movements backwards instead of forwards, and 
the whole abdomen obliterated or reduced to an incon- 
spicuous rudiment. 
