- Project Runeberg -  Zoologiska Bidrag från Uppsala / Suppl.-b. I. 1920. Studies on marine ostracods, p. I /
254

(1911-1967)
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Endopodite (fig. 18, — Ç): First joint: Its posterior distal cutting edge projects but

slightly and is only rather weakly lobed; it varies in form. Distally-anteriorly on this joint
there are two rather long bristles, the anterior one of which is somewhat longer than the other;
both, especially the longer one, furnished with close, long, fine hairs. Distally-posteriorly this
joint has three or four bristles, one rather long and powerful and very strongly pectinated, the
others somewhat different from each other in length and about half as long as the former bristle
or somewhat shorter, rather weak, bare or with short, weak secondary teeth. The end joint
is rather strongly chitinized and is usuallv furnished with thirteen bristles, in exceptional cases
a somewhat larger number being found: Four a-bristles (exceptionally five wTere found) of
moderate lengths and strength, bare or furnished sparsely with short, fine secondary bristles.
Three b-bristles, the anterior one of which is rather powerful, of moderate length and very strongly
pectinated; the two others are subequal and somewhat shorter and weaker, the anterior of them
rather strongly pectinated distally, the other furnished distally with rather few, but very
powerful secondary teeth. Three c-bristles (four c-bristles were found on the maxilla of one
side in only one specimen), the two posterior of which have about the same type and size as the
anterior b-bristle, the anterior one being quite short and weak, in most cases armed with a few
secondary teeth. Three d-bristles, somewhat more powerful than the other bristles of this
joint, of moderate lengths, the posterior one somewhat longer than the others. The posterior
d-bristle is of about the same type as the anterior b-bristle, the two others are armed at the
middle with a moderate number of very powerful secondary teeth. The bristles of this joint
all varied somewhat with regard to the shape and number of the secondary teeth. Pilositv:
On the first endopodite joint there are transverse rows of short, fine hairs.

F i f t h 1 i m b: — Protopodite: The first endite (fig. 19) has eight bristles, all
of the same type, powerful masticatory bristles, furnished with exceedingly numerous long,
powerful secondary bristles, arranged in more or less distinct wreaths. Of these bristles
nos. 2, 4, 6, 7 and 8, counting from the anterior side of the limb, are of moderate lengths; the
two first-mentioned ones are subequal and somewhat longer than the three others, which are
also subequal. Bristles nos. 1, 3 and 5 are rather considerably shorter than the five mentioned
above. In one specimen nine bristles were observed on this endite on the fifth limb of
both sides, the extra bristle being situated close to bristle no. 5 and being somewhat shorter
than this bristle. The five inner bristles of the second endite (fig. 20) are powerful and of
moderate lengths, the anterior and the posterior ones being somewhat longer and more powerful
than the others; they are ail furnished with one or a few wreaths of long, powerful secondary
bristles. Nos. 1 and 2, counting from the anterior side of the limb, are furnished distally with
a few rather powerful secondary teeth, no. 3 is finely serrated distally, nos. 4 and 5, especially
the latter, are strongly pectinated distally. The single bristle on the anterior side of this process
is short, somewhat varying in length, often furnished with short hairs, sometimes with a few
long secondary bristles. The seven bristles of the third endite (fig. 21)are all powerful, especially the
posterior one, and of moderate lengths, nos. 4, 5 and 6, counting from the anterior side of the
limb, being somewhat shorter than the others. All except the three last-mentioned ones are
furnished at the middle with one or a few irregulär wreaths of long, powerful secondary bristles.

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