Juday—A New Species of Daiptomus. 
805 
process; it bears a rather long, slender spine on the posterior 
surface toward the distal end. The left endopodite is elongated, 
reaching beyond the first segment of the exopodite; the outer 
end is pointed; there is a conspicuous cilium beyond the middle 
of the inner margin and small cilia thence toward the end. 
Length of cephalothorax 0.78 to 0.81 mm.; width of cephalo- 
thorax 0.28 to 0.30 mm.; total length 1.1 to 1.15 mm. 
Female. The cephalothorax is widest about one-third the dis¬ 
tance from the anterior end; the anterior third gradually tapers 
forward, being cone-shaped in outline. The first segment is 
about as long as the three following. The last thoracic segment 
has a lobe on either side, each of which bears a small lateral and 
a small dorsal spine. 
The first segment of the abdomen equals in length the three 
following ones; it is slightly expanded about one-third the dis¬ 
tance from the anterior end and bears a small spine on either 
side at this point ; the narrowest diameter is situated about the 
middle. The second segment is very short; the third is slightly 
longer than the fureal joints. 
The antennae reach a little beyond the middle of the furcal 
setae. 
The first basal segment of the fifth feet (fig. 2) bears a rather 
long spine on the dorsal side. The exopodite consists of three 
segments, the first being nearly three times as long as wide. 
The hook of the second segment is long and slender and only 
slightly curved; toward the outer end it is finely ciliate both on 
the inner and outer surfaces. The outer margin of this joint 
bears a small spine. The third segment is small and bears a 
rather long spine. The endopodite is one-jointed and about 
two-thirds as long as the first joint of the exopodite; it bears a 
spine-like cilium on the inner margin toward the distal end and 
another at the end; between these are small cilia. 
Length of cephalothorax 1.03 to 1.05 mm.; width of cephalo¬ 
thorax 0.38 to 0.41 mm.; total length 1.40 to 1.44 mm. 
