AMYMONE o7 
with numerous marginal sete, some of which are 
plumose, the basal joint dilated and embracing the 
second joint; in the male the limb is much smaller 
and less profusely setose, the inner segment of the 
basal joint having only two strong apical spines and 
a fringe of fine cilia along the inner margin. The 
caudal segments are very short-—the length being 
less than the width, and bear several short and two 
long sete, the inner and larger of which is finely and 
shortly plumose, and about as long as the abdomen. 
This very distinct and well-marked species is perhaps 
not uncommon off the Durham coast, a considerable 
number of specimens having been noticed in two 
dredgings,—off Hawthorn, in a depth of twenty-seven 
fathoms on a sandy bottom, and off Seaham, in thirty- 
seven fathoms amongst mud. It may be noted that 
these two localities are in close proximity. 
Sub-family 3. AMymMonina, Boeck. 
Posterior antennz 3-jointed, with a small 1- or 2- 
jointed inner branch; mandible-palp 1-jointed; maxil- 
lar palp 2-jointed, slender. Anterior foot-jaw 3-jointed, 
digitate; posterior strongly chelate; branches of first 
pair of feet 1-jointed, of following pairs 3-jointed. 
One genus only—Amymone. 
