28 " IVAR TRÄGARDH, (Schwed. Südpolar-Exp. 



15. Oribata alata Herm. 

 Locality: Xo. 16. One specimen. 



16. Hermannia macronychus nov. spec. 

 (PI. III. fig. t.) 



Length 0,76 mm. Breadth 0,45 mm. 



Colour, very dark brown. 



Texture^ finely punctured. 



Ccplialothorax broad and arched, 0.24 mm. long, anterior!)- rounded, sharp!}- di- 

 vided from the abdomen; the sides are slightly excavated on a level with the lam- 

 ellar hairs. There is one transverse sulcation in front of the lamellar hairs. A broad 

 raised, subtriangular portion between the pseudostigmata is divided from the other 

 part of the céphalothorax by a sulcation forwardly curved. This portion is itself 

 divided in two by a short longitudinal light-coloured groove, and is ver}- densely 

 and deeply punctured. Xo trace of lamella; but the lamellar hairs persist far for- 

 ward and are thick and slight]}- spatulate. Pseudostigmata large, situated at the 

 top of large, mamillary projections. Pseudostigmatic organs rather long and rod- 

 like, very slightly thickened at the ends, which are rough. 



Interlamellar hairs small, spatulate, situated in front of the raised, punctured 

 portions. 



The legs, rough, ver}- thick and heavy. Hairs thick, white, spatulate or clavate. 

 Tibiae short, scarcely, if at all, longer than the genua. Tarsi rather long, those of 

 the 3rd and 4th pairs of legs twice as long as the tibiae and of even width through- 

 out; tarsi I and VI more thick and club-shaped. Tactile hairs of legs I and II 

 long, nearly twice as long as the tarsi; one situated at the end of tibia I, one in 

 the centre of tarsus I, two on tarsus II ; tactile hairs of tarsi III and IV of moderate 

 length. Claws monodactyle, very strong. 



Abdomen very arched, sharply divided from the céphalothorax, with 6 rows of 

 thick whiteish, spatulate hairs. Genital and anal plates near together, occupying the 

 whole length of the ventral plate. Genital aperture very large, square, with rounded 

 angles, broader than long, with 3 pairs of hairs. Anal aperture large, rectangular, 

 nearly twice as long as broad, its length exceeding the width of the genital aperture, 

 with 2 pairs of hairs. 



Locality: Xo. 14, in damp moss. One specimen. 



