GAMMARUS EDWARDSII. 
387 
those of the first pair ; the palm is straight and defined 
by a slightly-produced point. The posterior pair of 
caudal appendages are short ; the branches, which are 
equal in length and subfoliaceous, are not longer than the 
peduncle. 
Two specimens of this species were found by us in a 
pool at Starcross, Devonshire, into which the tide for- 
merly flowed, hut which has been cut off by the railway 
embankment, so that we are not aware that the sea has 
entered it for many years, while a small fresh-water 
stream constantly runs into it. 
The animal was considered by us to he identical with 
M. Edwards’s description of G. marinus , and it was 
named accordingly, until we discovered that Leach’s 
type-specimens and description did not agree with those 
of Edwards. We therefore abandoned the name belong- 
ing to another species ; hut being desirous of associating 
with the discovery one who has done so much for 
Carcinology, we have attached to the species the name of 
Prof. Milne Edwards. 
The colour of the specimens which we procured was 
of a ferruginous red — a circumstance that in some measure 
may be due to the soil, the whole of which is very red, 
belonging, as it does, to the New Red Sandstone. We 
presume from their general aspect that they are females, 
and that the males will be of a slenderer form, with 
longer limbs. 
The specimen which M. Milne Edwards originally de- 
scribed, and which he considered might probably be 
only a variety of G . locusta , was taken on the coast of 
France. 
c c 2 
