67 
NOTES on JASSA FALCATA (Monr.). 
By ALFRED O. WaLkeER, F.L.S. 
In the autumn of 1910 I received from Professor 
W. A. Herdman a tube containing scrapings from the 
buoy moored at the entrance of Port Erin Bay (Isle of 
Man). ‘The Crustacea contained in this comprised the 
following species :— 
ISOPODA. 
Idothea pelagica, Leach; G. O. Sars. One male, 
length 10 mm. Not previously recorded from the 
Liverpool District. Colour, in spirit, white with 
reddish-brown blotches. 
AMPHIPODA. 
Stenothoe monoculoides (Montagu). Several; length 
of largest, female with ova, 3°3 mm. 
Gammarus locusta, Leach. One; length 6 mm. 
Jassa falcata (Montagu). <A large number, mostly 
young. 
Caprella linearis sp., Bate. One female with ova, 
one young. 
JASSA FALCATA (Montagu, 1808). 
Jassa pulchella, Leach, 1814. Stebbing, Ann. and 
Mag. N.H. (7), Vol. III, 1899, pp. 239-40. Gamm. d. 
Tierreich, p. 654, 1906. 
Bruzeliella falcata (Mont.). Norman, Ann. and 
MG ee a tot) Ole. Ly LOUD Seas 
A few words are necessary on the above name as to 
which I find myself in disagreement with our two 
greatest amphipodists—Canon A. M. Norman, F.R.S., 
in the genus, and Rev. T. R. R. Stebbing, F.R.S., in 
the species. Up to 1899 this form was universally known 
as Podocerus falcatus (Mont.). But in that year 
Mr. Stebbing published a paper (Ann. and Mag. Nat. 
