IVAR TRÄGARDH, 
(Schwed. Siidpolar-Exp. 
the second pair and a little behind a line drawn between the posterior edges of 
coxæ III. 
Ventral side. Trito sternum (Text-fig. 4) short, with short quadrangular, an- 
teriorly square trunk; the feathered slips lanceolate, not quite three times as long as 
the trunk. Sternal portion 
weak, with three pairs of 
rather long hairs. Ventral 
portion with two pairs of 
hairs; on both sides of the 
anal aperture two and at the 
posterior margin one pair of 
hairs. 
Peritremata short (Text- 
fig. 3) only about three times 
as long as the diameter of 
the stigmata , which are to 
be found on a level with the 
middle of coxæ IV. 
The legs are long, the 
ist and 4th being longer 
than the body, resp 0,76 mm 
and 0,73 mm, richly provided, especially the tarsi, with rather long, setiform hairs of 
which two terminal dorsal ones of the tarsi I are inserted on small, verruciform 
projections. Tarsus I is almost cylindrical and suddenly narrows towards the end; 
tarsi II — IV gradually narrow throughout their whole length. Genua IV somewhat 
swollen. 
Ambulacres I (Text-fig. 8) with a 2-lobed rounded caruncle and claws on a 
long, 2-jointed peduncle; in the present specimen the two joints make a right angle. 
Ambulacres II — IV (Text-figs. 9 and 10) with comparatively longer caruncles and 
two subunguinal hairs. Peduncles of tarsi II and III rather short, those of tarsi IV 
nearly as long as those of tarsi I, but straight. 
The epistoma (Text-fig. 5) triangular, tridentate, with long, sharp teeth, of which 
the median one is larger and longer than the others. Styli present, large. 
The hypostoma (Text-figs. 6 and 7). The hypostomatic hairs are of uniform 
shape and situated widely apart; the anterior pair, which is somewhat more slender and 
curved upwards and inwards, is inserted close to the anterior margin; the posterior 
pair near the postero-lateral angle; of the median pairs, one is placed about halfway 
between the anterior and the posterior pair, the last pair nearer the median, line and 
a little nearer to the other median than to the anterior pair. 
Track ygamasus(?) Ohlini. Tgdh. 
Fig. 3. Stigma & peritrema. Fig. 4. Tritosternum. Fig. 5. Epistoma. 
Fig. 6. Hypostoma, ventral view. Fig. 7. Same, dorsal view. 662 x . 
Fig. 8. Ambulacre I. Fig. 9. Ambulacre II. Fig. 10. Ambulacre IV. 
All figs, except fig. 7. 460 x . 
