130 TANAID®E. 
mens from the coast of Devonshire which have served 
for our work, although the general resemblance is so 
great that we prefer to consider them as belonging to 
that rather than to any of the species described by 
Kroyer. The species has indeed been recorded, without 
any expression of doubt, as a native of the Irish coast 
by the late W. Thompson, Esq., but the specimens 
which were so regarded by him prove on examination to 
be mutilated specimens of an amphipodous crustacean. 
Some differences, however, exist between our specimens 
and Savigny’s figures of the terminal portion of the body, 
which we are inclined to regard as arising from inac- 
curate drawing on the part of Savigny rather than as 
really existing. 
The body is of moderate length, smooth, and desti- 
tute of hairs, especially on the segments of the tail. 
The upper antenne are strong, porrected, and nearly as 
long as the large following segment; they are composed 
of three joints, of which the basal is the largest and 
terminated by a pencil of hairs. The lower antennz 
(represented too highly magnified in figure ce) are rather 
shorter and more slender than the upper pair, and five- 
jointed, having a very short basal and a short third joint, 
the fifth joint terminating in a few hairs. The large 
first pair of legs are terminated by a didactyle claw, of 
which the immovable finger is strong and truncated 
along its inner edge, which is slightly denticulated, 
whilst the terminal movable finger is slightly serrated 
along its inner edge. The second pair of legs are rather 
longer and more slender than the third pair, the five 
remaining pairs being nearly equal in size. The second 
. pair of legs are gradually attenuated to the tip, the finger 
being slender, acute at the tip, and but slightly bent. 
In the third pair the terminal joints are wider; the fifth 
