PARANTHURA COSTANA. 165 
ISOPODA. ANTHURIDA. 
ABERRANTIA, 

PARANTHURA COSTANA. 
Specific character. Cylindrical; segments of the body of nearly equal 
size ; middle tail-piece not carinated, ovate at the extremity ; inner branch 
of the sixth pair of tail appendages articulated and rounded at its extremity. 
Hand of the first pair of legs produced into a minute, reflexed tubercle at its 
extreme inner base. 
Anthura gracilis. Minne Epwarps, Hist. des Crust. iii. p. 186, pl. 31, 
fig. 3, but not of Montagu, ut supra. 
Idotea penicillata. Risso, Hist. N. Crust. Nice, 1816, p. 137, pl. 3, fig. 
10 (2). Drsmarest, Crust. p. 315. 
Oliska penicillata. Risso, Hist. N. Eur. Merid. 5, p. 113. Horn, Cat. 
Ital. Crust. p. 27 (2). 
In the Hopeian Collection of Crustacea are preserved 
several specimens of this species, fixed on card, to which 
is attached a label ‘*S. W. Coast of England on Broad 
Sea Weed.” It differs from A. gracilis in its more 
cylindrical form, the sides of the body wanting the 
raised lateral margins, the distinct articulation of the 
P Se ss a Us. = Rant grape Wort g 
