622 ; IVAR TRAGARDH 
Ventral side (fig. 155). Genital shield very large, extending far for- 
wards so that it leaves unprotected only a very narrow strip of the sternal 
shield. It is oval, well rounded anteriorly, truncate at the posterior end and 
extends backwards almost to the hind margin of coxe IV. : 
The legs resemble those of the male, only the thin blades along the 
ventral edge of the femora are not so regularly dentated as in the male, but 
sometimes smooth, sometimes only a little serrated. 
Mouthparts. The epistoma and hypostoma I have not been able to 
see properly. The mandibles are of the same shape as in the male, as are 
also the palpi, with the exception that in the specimen investigated by me the 
bipectinate bristle of the 3rd joint was not present. 
Loc.: Juan Fernandez, Masatierra. Among dead leaves. 
26. Scirus longipalpis n. sp. — Figs. 158—160. 
The present species is closely related to S. /ongzrostris (HERM.) which 
according to v. VITZTHUM has a very wide distribution (1926, p. 126—127), 
but is easily distinguished from it by the position of coxe I and II as well as 
by the different proportions of the palps. 
From South America several Bdellidae have been described, by STOLL 
(1883 —1886), by P. KRAMER (1898), by BERLESE (1888 and 1923) and by the 
author (1907). STOLL’s descriptions and drawings are, however, not detailed 
enough for identification purposes. KRAMER’s &. forrecta belongs to Sczrus, 
having only one mandibular hair, but differs from the present species by the 
5th joint of the palps being only twice as long as the 4th. BERLESE’s Hof/o- 
molgus opimus and Bdella antarctica TRAG. belong according to the modern 
conceptions to Lzscirus. 
From North-America some species have been described from the sea-shore, 
as f. i. Bdella marina PACKARD and B. frigida BANKS but the descriptions 
are not detailed enough to make a comparison possible. 
Length of entire body 2400 pw, length of rostrum 865 w. 
The shape of the body is the typical one. 
Mouthparts. The palps (fig. 158) are quite extraordinary long, the 
last four joints measuring together 1800 y. viz. more than the body (excl. the 
rostrum). The length of the joints is given in the accompanying table. 


OE HASTE. Hl 




Joints of palpi | Terminal 
7 2 —|hairs of 5th| Mandible. | 
2 | 3 4 5 joint | 
— : : 7 
Length (y) . 790 136 | 182 | 692 240 865 
Width CD aa 82 82 73 46 173 
2nd joint slightly longer than the 5th; it has in all 20 hairs arranged in 
series, dorsally 7 almost equidistant hairs in the distal */3, exteriorly 5 much 
