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what longer than the end joint. The first joint has no bristles. The second joint has at the
middle a single bristle, which is somewhat longer than this branch; this bristle has some rather
long hairs proximally of the middle, but apart from these it is almost or quite bare. Distally
on this joint there are five natatory bristles, which are of about the same length and type as the
long natatory bristles on the exopodite. The end joint has four bristles distally, three of which
are of about the same length and type as those on the preceding joint, the fourtli somewhat
shorter. All the joints are bare.
M a n d i b 1 e (see the appended fig. 5) : — This is of about the same type as in Polycope
frequens G. W. MOLLER; see this author, 1894, pi. 7, fig. 7. Pr o topodite: This has
three rather distinct joints. The procoxale has no bristle or endite. The coxale is developed
ventrally as a long, powerful endite which is furnished distally with three powerful pointed teeth,
with a smaller tooth of the same kind between the two anterior ones, and two short-haired
bristles, one of which is about as long as the large teeth, the other exceedingly short. At the
middle of the posterior side of this endite there is, in addition, a rather short bristle with short
hairs. Basale: This is somewhat swollen ventrally and is there furnished with four subequal
bristles, which are plumous at the middle and have short hairs distally ; these bristles are about
as long as the height of this joint. Somewhat in front of and dorsally of the middle this joint
has on one side a rather short plumous bristle as well. Exopodite: There are indications
of a division into two joints. The proximal joint has a single bare bristle dorso-distally, which
is about as long as this joint. The distal joint is narrow and cylindrical and has no bristles.
Endopodite: This has two joints. The first joint has ventrally at and somewhat
proximally of the middle three subequal bristles of about the same type as the ventral bristles
on the basale and about as long as or rather slightly longer than these. Dorso-distally on this
joint there are two subequal bristles of about the saine length as the whole of this limb; these
bristles are furnished proximally with rather long hairs (these hairs are numerous, espeeially
on the anterior side of the anterior one of these two bristles) and hâve short hairs distally. The
end joint is extremely small and is furnished with two subequal bristles of about the same type
and length as the ventral bristles on the first endopodite joint. Pilosity: On the posterior side
and distally on the endite of the coxale there are short, stiff hairs, situated rather close together.
Dorsally on the distal joint of the exopodite there is a collection of rather long, fine hairs. The
first endopodite joint is also furnished with hairs, some on the side and some ventrally-proximallv.
Maxilla (see the appended fig. 6): — This is of about the same type as in Polycope
frequens G. W. MÜLLER; see this writer, 1894, pl. 7, fig. 14. Pro topodite: This is
distinctly three-jointed; ail the joints are strong and of about the same length. Procoxale:
Ventrally-medially-distally this has a rather weak endite, armed with five bristles of somewhat
different lengths, the longest one being somewhat shorter than the height of this joint, the
shortest about a third of this length; they are ail furnished with fine and rather long secondary
bristles, situated close together. Ventero-distally on this joint there are also three bristles of
about the same type and length as the longest ones on the above-mentioned endite. Apart
from these this joint has no bristles. Coxale: This has two very weak endites ventero-medially.
• )n the proximal endite there are four long-haired bristles; the two proximal ones of these bristles
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