ISOPODA. 



NORM ALIA. 



LIMNORIA LIGNORUM. 351 



ASELLID^E. 



LIMNORIA LIGNORUM (THE GRIBBLE). 



Specific character. Entirely covered with small, setose hairs. Lower an- 

 tennae not longer than the head. Terminal segment of the tail entire, 

 rounded, and flattened, with a slight central dorsal carina, and the lateral 

 margins raised. 



Length, about a line and a half. 



Cymothoa lignorum. RATHKE, Skrivt af Naturh. Selsk, vol. 101, t. 3, f. 14 

 (1799). 



Limnoria lignorum. WHITE, Pop. Hist. Brit. Crust, p. 227, pi. 1 2, f . 5. 



Limnoria terebrans. LEACH, Diet. d. Sci. Nat. art. Cymothoadees, Edinb. 

 Enc. vii. p. 433. Trans. Linn. Soc. xi. p. 371. 

 Suppl. Enc. Brit. 1, 428. DESMAREST, Cons. Crust, 

 p. 312. SAMOUELLE, Ent. Compend. p. 109. COLD- 

 STREAM, in Edinb. New Phil. Journ. xvi.* p. 316, 

 t. 6, f. 116. HOPE, Trans. Ent. Soc. Lond. 1, 

 p. 119. W. THOMPSON, Edinb. New Phil. Journ. 

 xviii. p. 127. MILNE EDWARDS, Crust, iii. p. 145. 

 WHITE, B. M. Cat. Brit. Crust, p. 68. GOSSE, 

 Man. Mar. Zool. 1, fig. 242. WESTWOOD, in Gar- 

 dener's Chronicle, 1849, p. 388, fig. annexed. 

 * This and the preceding plate are erroneously lettered " vol. xvii." 



