382 
GAMMARIDiE. 
G. marinus. Montagu states that it never quits the water 
by choice, is incapable of leaping, and seems to make 
very little use of its legs out of that element, for when 
deprived of water it lies on its side and endeavours to 
force itself along by the action of the tail. It is stated 
that if put into fresh water it soon dies.* 
It has been taken by Rathke in the Crimea, and by 
Liljeborg on the coast of Sweden ; but if we are to 
judge of its normal habitat by the magnitude to which 
it attains, the shores of the Arctic seas are where it 
flourishes most. Some specimens in the British Museum, 
procured by Mr. Drewsen at Iceland, are one inch and 
a half long, while the largest that we have seen as Bri- 
tish has not attained a greater length than three-fourths 
of an inch. Dr. Walker, the naturalist to the last 
Arctic expedition, under Sir F. L. McClintock, informs 
us that the Arctic specimens frequently exceed two 
inches and a half in length, and are phosphorescent. 
This phosphorescent character has been affirmed of other 
species, and is probably to be attributed to the food 
eaten by the animal at the time, and is not a permanent 
condition. 
Having already (ante, p. 15) employed the Linn man 
specific name, Locusta, instead of that of Saltator, for 
our English species of Talitrus , and given in the pre- 
ceding page a history of this name, the strict rules 
of nomenclature forbid its second adoption for another 
species with which Linnaeus may have happened to 
have confounded it, and which, in the case of the 
present species, is also inapplicable, the animal neither 
* Mr. Robertson informs us that he has found that five out of seven, after 
being eighteen hours in fresh (rain) water, continued to live upon being 
returned to salt water. 
