396 IDOTEIDZ. 
ISOPODA. IDOTEIDZ. 
NORMALIA, 



IDOTEA APPENDICULATA. 
Specific character, Very narrow. Pereion with the lateral margins angularly 
produced, with the slender legs attached close to their edges. Pleon lanceo- 
late, and apparently only one-jointed. 
Length, about an inch. 
Leptosoma appendiculata. Risso, Hist. Nat. de Eur. Merid. vol. v. p. 107, 
t. 4, f. 23. 
Idotea appendiculata. Mitne Epwarps, Crust, iii. p. 135. Wuits, 
B. M. Cat. Brit. Crust. p. 66. Pop. Hist. 
Brit. Crust. 224. 
Leptosoma lancifer. Leacu, MSS. in Brit. Mus. 
Our figure of this species is drawn from Dr. Leach’s 
specimen from Sidmouth, contained in the British Museum 
collection, The body, somewhat irregular on its upper 
surface, is narrowed and considerably flattened, with the 
segments strongly produced and angulated at the sides, 
the angles being formed (except in the first segment) by 
the exposed epimeral or coxal joint of the legs. The 
