LONGIPEDIA. 7 
termination of the thorax, in the male to the middle 
of the abdomen, the last joint constituting about 
three fourths of the whole length of the limb and 
bearing three terminal and three lateral spies. The 
feet of the third pair (fig. 6) are rather larger than 
those of the fourth (fig. 7), and bear a series of marginal 
spines on the first and second joints of the inner, and on 
the second joint of the outer branch. The fifth foot in 
the male (Plate XXXIV, fig. 8) consists of a moderately 
broad central lamina bearing about eight marginal 
sete, two of which are much longer than the rest and 
are situated near the apex; the two lateral segments 
are smaller, one bearing a very long curved seta, the 
other a short apical filament only; the fifth pair in the 
female (fig. 9) is rudimentary, consisting only of four 
short sete. The first segment of the abdomen of the 
male (Plate XX XV, fig. 8) has two lateral spines on the 
inferior angles, while the fourth segment is armed with 
a long, downward-pointing posterior spine ; the female 
abdomen has none of these appendages, and the caudal 
seoments (fig. 9) are much narrower and more diver- 
gent than in the male; the longest of the two principal 
tail sete is equal to about twice the length of the 
abdomen. Length, ;4sth of an inch (1:4 mm.). 
Longipedia coronata is often taken abundantly by the 
dredge on sandy or gravelly bottoms in depths of from 
one to thirty fathoms or more; it also occurs, though 
in less abundance, on muddy bottoms and amongst the 
fronds of fuci between tide-marks. It is readily dis« 
tinguishable from all other species by the great length 
of the inner branch of the second swimming foot; the 
