150 
GAMMARIDiE. 
It was first taken by Holboll on the coast of Green- 
land, from whence the great northern currents probably 
drifted it to the shores of America : for, generally speak- 
ing, the Crustacea of the eastern coast of America are 
very distinct from those of the western coast of Eu- 
rope ; and in instances where they may be found to be 
identical, (as we believe to be the case with this species,) 
they are essentially Arctic forms, which yield to the 
opposite shore of each continent some few wandering 
specimens. 
We have taken it with the dredge from Plymouth Sound, 
from which specimen our figure was drawn and described, 
but the figure of the caudal appendages was drawn from 
another specimen. Mr. Barlee has taken it while dredg- 
ing in the Shetlands, as have also very lately the Rev. 
A. M. Norman and Mr. J. Gwyn Jeffreys. The speci- 
men which Stimpson describes as distinct, but which we 
have incorporated with this species, was taken by him with 
the dredge on coarse sandy bottoms, in the laminarian 
and corralline zone on the coast of the Isle of Grand 
Manan, U.S., North America. 
