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In other words the first joint, is rather considerably longer than the total length of all the folio wing
joints, the second joint is about as long as the next two joints put together. The bristle of the
second joint is somewhat longer than the eight distal joints and is furnislied ventrally with
about seventeen or eighteen strong secondary teeth, dorsally with a somewhat smaller number
of weak and short ones. The proportion between the length of the longest natatory bristles
and that of the whole exopodite is about three to two. The natatory bristles are furnished with
broad, well developed natatory hairs. The end joint has four bristles of wliich the dorsal
one is about as long as the total length of the six or seven distal joints and is furnished with
well developed long natatory hairs. The second to the ninth joints have powerful and rather
long conical basal spines, which decrease somewhat in length the more proximally they are
situated, the one on the second joint being rather small, those on the fourth to the eighth joints
are equal to or even exceed the length of the following joint. The endopodite is well
developed and is of exactly the type reproduced for C. ( Vargula) norvegica. The first joint has
a group of four bristles proximally, one of which is somewhat more than twice the length of
the three others and is somewhat shorter than the second joint; this joint has, in addition,
ventrally at the middle a single bristle, which is somewhat longer than the longest proximal one.
The second joint has ventero-distally a single bristle, which is not quite as long as the end joint.
This bristle, like the two long ones on the first joint, has short hairs; the three short proximal
ones are bare. The distal bristle of the end joint is not quite twice as long as the endopodite.
Mandible (fig. 6): — Protopodite: The endite on the coxale has very
numerous spines; it is weakly bifurcated distally; the two distal points are somewhat, though
only rather slightly, coarser than the other spines and like these they are smooth. Basale:
This has seven bristles ventrally: two a-bristles, one b-bristle, two c-bristles and two d-bristles.
Of these the a-, b- and c-bristles are very short; the longer of the d-bristles is about as long
as the second endopodite joint, the other is about y4—y3 of this length. Of the three dorsal
bristles the proximal one is attached a short distance in front of the middle of the joint
and is somewhat shorter than the longest d-bristle; the longest distal bristle is about as
long as or somewhat longer than the mentioned d-bristle, the other distal bristle is less than
half the length of its neighbouring bristle. All three are of the same type as the long
d-bristle, i. e. they have long secondary bristles arranged in irregulär wreaths and
have short hairs distally. The exopodite is about as long as the dorsal side of the
first endopodite joint; of its two bristles the proximal one is of about the same length
and type as the shorter of the distal bristles situated dorsally on the second protopodite joint;
the distal one, on the other hånd, is very short, extending only slightly beyoncl the point of the
exopodite, and has short, sti ff hairs situated very close together distally. Endopodite:
Of the four ventral bristles on the first joint the two longest are of about the same type as the
long bristles on the second protopodite joint, i. e. they have long secondary bristles arranged
in irregulär wreaths; the two others have short hairs. Second joint: On the anterior side tliere
are a great number of brist les of different types. Sonie of these, about eighteen, are more or
less long; among these there are some which have long, stifï secondary bristles arranged
in irregulär wreaths, distally of which there are close (as in the specimen shown in fig. 7) or
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