30 



IVAR TRAGARDH, 



(Schwed. SüdpoLir-Exp. 



the genital plate. Genital plate almost square, with rounded angles. Anal plate 

 large, pyriform, nearly contiguous with the hind margin. 

 Locality: No. 14. in damp moss. C)ne specimen. 



18. Notaspis antarctica MiCH. 



1903. Notaspis antarctica Mich.ael. Resultats du Voyage du S. Y. Belgica, Acarida, 



j). 2 — 5. PL II, figs. I — II. 



Localities: No. 2, 3, 4, 6, 7, 8 and 9. 



19. Notaspis Belgicae MiCH. 

 1903. Notaspis Belgicœ Michael o\>. cit., p. 5 — 6. PI. II, figs. 12 — 19. 

 Locality: No. 3. 



20. Oribatula Nordenskjöldi nov. spec. 



(PI. Ill, fig«. 4 and 6. texl-fig. 56.) 



Average length 0,7 mm; length of abdomen 0,54 mm. Average breadth 0,40 mm. 

 ColoJtr, chestnut brown. Form, oval, rounded posteriorly. Texture, smooth, 

 but not polished. 



Céphalothorax in the middle not distinctly demarcated from the abdomen, conical, 

 with slightly rounded sides and median, anterior, small, rounded projection. 



The lamelles long, low, narrow blades, 

 gradually narrowing towards both ends, 

 without translamella or cusps, their proxi- 

 mal '/4 concealed under the pteromorphae. 

 Rostral hairs rather long, reaching beyond 

 the tibiae of the first pair of legs, slightly 

 curved, not very near together. Lamellar hairs 

 long, nearly as long as the céphalothorax, 

 directed obliquely upwards. Interlamellar 

 hairs still longer than the lamellar ones, 

 slightly curved and directed obliquely upwards and outwards, situated far from each 

 other, near to the lamelhe. Interlamellar, lamellar and rostral hairs rather scarcely 

 clothed with short adpressed hairs. Pseudostigmatic organs short with pyriform, 

 bare heads on slender peduncles. Pseudostigmata concealed beneath the ptero- 

 morphse. 



Fig. 56. 



56. 



Oribatula Nordenskjöldi, side view. 

 75 X- 



