16 TAGE SKOGSBERG, A NEW FRESH-WATER OSTRACOD. 
of moderate and somewhat different length. The third process with eleven bristles, 
ten distal, the remaining one of moderate length, plumose, situated ventrally at the 
base of the process; of the ten distal the dorsal is rather thick at the base, conical, 
distally with a thick brush of stiff and rather long hairs; the two neighbouring bristles 
similar to each other, rather long, subequal, plumose; distally to them a very short 
angulate bristle with long stiff hairs on its convex side (see the drawing 12); all the 
other six bristles are rather long, subequal, four naked and relatively weak, the 
other two very strong and distally denticulate; the number of their teeth seems to 
be constant (see the drawing). Exopodit large with 26 rays, the six proximal pointing 
forward, the two distal very short. Endopodit two-jointed, the distal joint well 
developed, cylindrical. First joint well developed, carrying seven bristles of some- 
what different length, the longest, proximal, a little longer than this joint, naked; 
of the other six, three are also naked, the remainder, one of which is rather short, 
finely plumose. End-joint distally with six naked bristles, three of which are rather 
strong. This joint with fine and rather long scattered hairs. 
Fifth leg: Shows a close agreement with G. O. SARS's description. We may 
add to this author's account: The basal portion has on the anterior side, some- 
what medially, two very short proximal bristles; the number of the setze of the 
masticatory process in all the specimens examined was 14, all plumose; on the inner 
side of the leg two plumose and rather long bristles, one just at the base of the 
masticatory process, the other somewhat behind it. Endopodit: the two small projec- 
tions ventrally to the end-elaw somewhat different on the right and the left leg, 
those on the former being distincetly larger. 
Sixth leg: Basal joint anteriorly with a very short bristle; the ventero-distal 
bristle of the first endopodit joint about as long as or a trifle longer than the fol- 
lowing joint; that of the second joint about as long as the two distal joints taken 
together; one of the two ventero-distal bristles of the third joint is about the length 
of the end-joint; the other of them is subequal to the dorsal and the ventral bristle 
of the end-joint and a little shorter than that of the second endopodit joint; all these 
bristles of the endopodit carrying short secondary hairs; end-claw powerful, armed 
with strong ventero-distal teeth and together with the end-joint about as long as the 
total length of the remaining endopodit joints. The three proximal endopodit joints 
with dorsal and ventral brushes and transverse rows of fine short hairs, the third 
has also, like the end-joint, on its distal edge a series of short but rather stiff and 
strong hairs. The chitinous stripes on the basal joint vary a little. 
Seventh leg: Agrees closely with the description given by G. O. SARS — except 
that the bristle of the anterior edge of the basal joint is equal in length to the 
antero-distal bristle of this joint — and consequently also with the type described in 
detail by C. CLaus, 1893, as common to the forms allied to this species. We may 
add that all the long bristles of this leg carry short secondary hairs; on some of 
them, however, these are so fine as to become almost invisible. 
