412 SPHEROMID. 
ISOPODA. SPHAROMIDA. 
NORMALIA. 

SPHHROMA CURTUM. 
Specific character. Upper surface smooth ; second, third, and fourth seg- 
ments of the pereion terminating laterally in a sharp point on each side ; the 
three following more oval at the lateral extremities. Terminal segment of 
the pleon with two large rounded and broad tubercles; extremity produced in 
the middle into an obtuse point, with a notch on each side ; both plates of 
the lateral appendages of the tail obliquely truncate. 
Length, one-fourth of an inch. 
Spheroma curtum. Leacu, Dict. Sc. Nat. xii. p. 345. Drsmarzst, 
Cons. Crust. p. 299. Minune Epwarps, Crust. 
iii. p. 209. 
Var. Spheroma Grifithsii. Luacu, MSS. in Brit. Mus. W. Tuompson, in 
Ann. Nat. Hist. xx. p. 246. Wuurtr, B. M. 
Cat. Brit. Crust. p. 76. 
THis species is now for the first time described and 
figured from Dr. Leach’s typical specimen in the British 
Museum, named by him Sph. Griffithsii, which we con- 
sider to be a fully developed individual of Sph. eurtum, 
/ 
~~ = 2. ae wee | at Varn 
~ 
