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 coxae 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. — FJgs. 158 — 160. 



The present species is closely related to S. longirostris (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 coxae I and II as well as 

 by the different proportions of the palps. 



From South America several Bdellidas 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 B. pon^ecta belongs to Scirus, 

 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 Hoplo- 

 niolgus opimus and Bdella antaixtica Trag. belong according to the modern 

 conceptions to Bischiis. 



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 [x, length of rostrum 865 {a. 



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 [a viz. more than the body (excl. the 

 rostrum). The length of the joints is given in the accompanying table. 



2nd joint slightly longer than the 5th; it has in all 20 hairs arranged in 

 3 series, dorsally 7 almost equidistant hairs in the distal ^/a, exteriorly 5 much 



