160 ANTHURID&. 
ISOPODA. ANTHURIDA, 
ABERRANTIA. 


= Sa Zr 
ANTHURA GRACILIS. 
Specific character. Long, slender, sub-compressed, sub-cylindrical. Seg- 
ments of the body with a strong, lateral ridge ; terminal segments sub-trian- 
gular. Four anterior segments of the pleon soldered closely together, forming 
a subtriangular mass ; middle tail-piece keeled down the centre, with three 
very delicate, longitudinal, raised lines, down the sides of the keel; apex 
truncate ; apex of the inner division of the lateral scales obliquely truncated, 
and crenulated. 
Length 5 lines. 
Oniscus gracilis. Montacu, Trans. Linn. Soc. ix. p. 108, t. 5, fig. 6. 
Anthura gracilis. Leacu, Edinb. Encyc. vii. p. 604. Trans. Linn. Soe. 
xi. p. 366. Suppl. Enc. Brit. Drsmarest, Cons. 
Crust. p. 291, t. 46, fig. 13. SamovenLe, Entom. 
Compend. p. 107. Guéirin Ménevittz, Icon. 
R. An. t. 30, fig. 6. Mine Epwarps, Crust. iii. 
p- 136, t. 31, fig. 8. Wuuits, B. M. Cat. Brit. Crust. 
p. 67. Pop. Hist. Brit. Crust. p. 225, pl. 12, fig. 4.* 
GossE, Man. Mar, Zool. i. fig. 248. 
* In this figure two segments of the body and one of the pairs of legs are 
omitted. 
