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about half the length of this one or somewhat shorter; all are pectinated distally, the two shorter
ones rather weakly, however. The cutting part of the posterior distal edge of this joint is of
about the same type as in the previous species. The end joint is rather strongly chitinized,
but not so strongly as in the preceding species, nor does it form an inner tooth - like, powerfully
chitinized process as in the case of the species mentioned. It is furnished witli exactly the same
bristles as in the preceding species; most of these bristles are, however, developed quite differently
from those of the latter: Four a-bristles of the same size and strength as these bristles in C. (D.)
levis; the posterior ones of these are weakly and sparsely pectinated in the middle, the anterior
ones are bare or have a few fine, short secondary spines. Three b-bristles, of which the anterior
one is moderately long, the two others about half the length of this one, ail strongly pectinated,
the two short ones, however, having rather few secondary spines. Three c-bristles, of which
the posterior one has about the same type and size as the anterior b-bristle or else is somewhat
shorter, the middle one agrees fairly well with the two short b-bristles and the anterior one is
very short, bare or only having sparse, short, fine secondary spines. Three d-bristles, rather
long, subequal, powerful like these bristles in C. (D.) levis, but only weakly and uniformly curved
and very strongly pectinated (from which character the species derives its name) ; on the posterior
one of these bristles the secondary spines are more numerous than on the anterior ones.
Pilosity: The first endopodite joint has transverse rows of fine and rather short hairs.
Fifth limb: — Protopo dite: The first endite (fig. 3) is furnished with eight
bristles, of about the same type, powerful masticatory bristles armed with long, stiiï
secondary bristles situated close together and more or less clearly arranged in obliquely placed wreaths.
On all the specimens investigated, five in number, from Falkland Islands and Tierra
del Fuego, the proportion between these bristles was about the same: Bristles nos. 3, 5,
7 and 8, counting from the am rior side of the limb, were rather long, decreasing somewhat
in length the more posteriorly the/ were placed; nos. 2, 4 and 6 form a similar series, but are
considerably shorter; no. 1 is very . mall. The five inner bristles of the second endite (fig. 4)
are powerful, subequal, and of moderate length. The two anterior ones and the two posterior
ones are of about the same type, the latter being, however, somewhat more powerful; distally
they are furnished with powerful secondary teeth and in the middle with some obliquely situated
wreaths of long, stifï secondary bristles. The middle bristle is finely serrated distally and has
one or a few wreaths of long, stiff secondary bristles at the middle. The remaining bristle of
this process, situated on the anterior side at some distance from the fivc former ones, is short
and almost bare, with only a few long, stiff secondary bristles. The seven bristles of the third
endite are moderately long (fig. 5), subequal except for bristles nos. 5 and 6, counting from the
anterior side of the limb, which are somewhat shorter, no. 6 being rather shorter than no. 5.
They are all powerful, especially no. 7; bristles nos. 1, 2, 4 and 7 have at the middle long,
stiff secondary bristles arranged in awreath, the others are, in most cases, without such armament.
Bristle no. 1 has short hairs, nos. 2 and 4 have rather powerful secondary teeth, nos. 3 and 5 are
finely and sharply serrated distali}’, nos. 6 and 7 have very powerful secondary teeth distally.
The distal chitinous spine of the pro topodite is relati vely somewhat shorter than in the preceding
species. The epipodial plate has the same number and type of bristles as in the
Zoolog. bidrag, Uppsala. Suppl.-Bd. I.
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