Parapherusa crassipes (Haswell). 203 
in the palp the first segment is short, less than half the length 
of the second, the second and third are subequal, but the 
third is more slender; the second bears on the inner convex 
side about a dozen long setz ; on the third there is a regular 
double row of sete on the distal half of the inner margin, 
with longer sete near the base of the joint and two or three 
very long ones at its extremity. The right and left man- 
dibles differ in the structure of the inner cutting-edge ; in 
the left this 1s formed of four or five large teeth, similar to 
those of the outer cutting-edge, while in the right mandible 
it is somewhat different in shape and terminates in about six 
short small teeth. ‘The spine-row contains about ten serrated 
spines, 
The lower lip (fig. 6) : inner lobes large and broad, almost 
as broad as the outer lobes ; the mandibular processes are 
short and broad. 
First maxille (figs. 7, 8): the inner lobe triangular, about 
half as long as the outer lobe, and bearing on its inner convex 
margin about a dozen long, slender, plumose sete ; the outer 
lobe with about ten or eleven spines, most of which are finely 
denticulate towards the ends; the palp reaching slightly 
beyond the outer lobe, its first joint very short; the second 
ends in about six short spines, and bears an oblique row of 
setee on the surface near the extremity. In one maxilla the 
spines at the end of the palp are shorter than in the maxilla 
of the other side. 
Second mazille (Pl. 1X. fig. 9) : both lobes short and broad, 
broadly rounded at the ends, and bearing at the extremity 
and on the distal portion of the inner margin the usual long 
setee ; on the inner lobe there is also an oblique row of sete 
arising from the surface. 
Mazillipeds (figs. 10, 11): outer and inner lobes well 
developed ; inner lobe truncate at the extremity, with two 
stout, rather blunt teeth at the inner corner, and a number of 
simple sete at the extremity and on the distal portion of the 
inner margin; the outer lobe has its inner margin bordered 
with about ten stout broad spines, becoming progressively 
larger towards the distal end ; its extremity and part of its 
outer curved margin bear long sete; other long sete arise 
from the surface of the joint external to the stout spines ; 
the carpal joint of the palp reaches far beyond the outer lobe 
and is much longer than the propod; the propod is held 
more or less vertically or at right angles to the plane of the 
base, and bears a row of five or six long setz near its outer 
and upper margin, and near the inner or lower margin a 
rounded lobe fringed with many long sete; other long sete 
