26 
NOTES on the MYSIDH# of LIVERPOOL BAY. 
By A. O. Waker, F.L.S. 
[Read 12th February, 1887.] 
In Bell’s ‘“‘ History of British Stalk-eyed Crustacea,” 
only one genus (Mysis)—Thysanopoda being now placed 
in a separate family—with three species is recorded, as 
belonging to the family Myside. The number has since 
been greatly increased, the genera now being Hrythrops, 
Mysidopsis, Leptomysis, Mysis, and Siriella, containing at 
least thirteen species in addition to those described by 
Bell. Most of these are enumerated by the Rev. Canon 
A. M. Norman, in the Ann. and Mag. of Nat. Hist. for 
1887. 
The British species of the genus Mysis, so far as known 
to me, are :— 
a. Mysis flecuosa, Muller=M. chameleon, Thompson. 
b. M. mermis, Rathke.. . 
Ce ME Gyvenosa, Sars: .0. 
d. M. spuritus, Norman . 
e. M. lamorne, Couch... 
f. M. productus, Couch . . 
g. M. vulgaris, Thompson. 
hi. M. oberon, Couch... ~-.-. 
1. M. grujithsie, Bell... 
Apex of telson bifurcate. 
Apex of telson entire. 
a. Bell—Hist. British Stalk-eyed Crustacea, p. 336. Norman—Ann. and Mag. 
Nat. Hist., vol. vi. (8rd Series), p. 429. 
b. Norman—Rep. Brit. Association, 1868, p. 266. 
c. Sars-—Nye Bidrag till Kundsgaben Middelhavets Invertebratfauna, &c, 
