J. Eights on a Crustacean from the Antarctic Seas. 393 
angulated legs, composed of the ordinary parts. The three an- 
terior pairs project themselves forward, and are closely com- 
he base, 
Which enables the animal to close them together in a line along 
its centre beneath. These plates are about the length of the seg- 
Ment, and of a triangulate form, each one having near its ter- 
Mination a small oval articulation. The segment and margi 
Plates are slightly inflated along their external edges, produc 
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am obtusely elevated border. 
SECOND SERIES, VOL. XXII, NO. 66.—NOV., 1856. 
50 
