Oribata 17 



17. O. rubens C. L. Koch 1841 Oribates r., C.L.Koch. C.M.A., fasc. 31 t, 10 

 1887 0. longipes, Berlese, A. M. S., fasc. 35 nr. 5. 



Im. Chestnut-brown; smooth. Cephth. short. Lam. and Trlam. blades 

 on edge ; no C. lam. Psstg. org. moderate length, clavate, curved forward. 

 Lam. and Intlam. hairs slightly pectinated. Abd. globular, hairless. 

 Ptm. not reaching far back, terminated suddenly posteriorly, slightly undulated 

 anteriorly. Legs 1 and 2 long, femur 1 passing tip of Host. L. ca. 450 |u. 



In moss. Germany, Italy. 



18. O. setosa C.L.Koch*) 1835 Murcia trimaculata, C.L.Koch, C. M. A., 

 fasc. 3 t. 21 (Nph. !) j 1840 Oribates setosus, C. L. Koch, C. M. A., fasc. 30 t. 19 | 1855 

 Oribata setosa, Nicolet in: Arch. Mus. Paris, v. 7 p. 436 t. 5 f . 4 j 1884 0. s., Michael, 

 Brit. Orib., v. 1 p. 243 t, 7 f. 312 : 1889 Oribates setosiis, Berlese, A. M. S., fasc. 43 

 t.4 1872 Oribata notata, Thorell in: Ofv.Ak.F6rh., v.28 p. H83. 



Im. Dark brown, a lighter patch near ant. margin of Abd. Ptm. and 

 legs lighter. Broadly pyriform, round posteriorly. Lam. large blades on 

 edge; C. lam. almost horizontal, with points nearly as long as Eost. 

 Trlam. a blade with deep central indentation, and forming with 

 Lam. sharp angles which bear strong serrated Lam. hair. Tectp. 1 

 with long point bearing curved, serrated spine. Psstg. org. longish, rough, 

 clavate, slightly recurved. Intlam. hair long, rigid, serrated. Abd. slightly 

 longer than broad. Ant. margin of Abd. forms 3 shallow lobes, Ptm. vague 

 posteriorly. Dors, of Abd. smooth, dull. 1 or 2 rows of rough thick hairs round 

 margin ; a variable species. - - Nph. Rost. and legs pink-brown, chitinous, 

 Abd. bluish-white ; alimentary canal shows dark, often yellow-green ; expulsory 

 vesicles almost black ; a constriction between Rost. and remainder of Cephth. 

 2 pairs of rough Rost. hairs. Psstg. org. short, clavate ; Intlam. hair rough 

 spines. Ant. margin of Abd. slightly concave, several rough spines on 

 Dors, of Abd. - - Im. L. ca. 540 |u. 



In long grass etc. England, France, Franz-Joseph Archipelago, Germany. Italy, 

 Netherlands, Spitzbergen. 



19. O. sph'agni Michael 1880 0. s., Michael in: J. R. micr. Soc., v. 3 p. 179 t.4 

 f. 6 9 1884 O.s., Michael, Brit. Orib., v.l p. 223 t. 3 f. 1 8. 



Im. Yellow-brown, polished. Rost. blunt. Lam. narrow, blades oa 

 edge ; C. lam. short with curved hair at point. Trlam. a line only. Psstg. 

 small, hidden by Ptm. Psstg. org. minute, entirely hidden within Psstg. 

 No Intlam. hair. Legs short, pair 4 not extending beyond Abd. Abd. oval, 

 ant. margin sinuous. Dors, of Abd. polished and hairless. Ptm. strap-like, 

 only covering about half the femur of leg 2. - Nph. Greenish-white or 

 yellow-grey, legs pinkish or yellow. Rost. bluntly-conical with ridges enclosing 

 spaces, Psstg. near together, Psstg. org. long and filiform. Intlam. hair 

 upright spines. Abd. shield-shaped, Dors, flat, covered with irregular wavy 

 ridges bearing scattered dots. Whole edge of Abd., except ant. margin 

 armed with long spikes. Im. L. ca. 320 |u. 



On sphagnum. England. 



*) According to the synonyma enumerated above by the author and 

 in accordance with the ,,Regeln fur die wissensch. Benennung der Thiere" 

 the name of this species is: O. trimaculata (C.L.Koch). The Editors. 



See my note p. 7. The Author. 



Das Tierreich. 3. Lief.: A. D. Michael, Oribatidae. 2 



