20 Oribata 



27. O. tecta Michael 1884 0. t., Michael, Brit. Orib., v. 1 p. 251 t. 8 f. 11. 



Im. Dark-brown, polished, rather long-shaped. Lam. horizontal, very 

 large, almost covering Cephth. standing free except at hind edge, 

 their inner edges almost or quite touch, truncated anteriorly, 

 truncated edge has a shallow notch. Lam. hair near inner angle, rough. 

 Psstg. org. long, filiform or slightly clavate; Intlam. hair long, rough; legs 

 short, pair 4 not reaching far behind Abd. Dors, of Abd. hairless. 

 L. ca. 210 n. 



In moss. England. 



Sect. Ib 2. Lam. normal or absent. 



28. O. agilis Nie. 1855 0. a., Nicolet in : Arch. Mus. Paris, v. 7 p. 432 t. 4 f. 3. 



Im. Clear red-brown, polished. Lam. blades narrow posteriorly, widest 

 anteriorly. Lam. hair long and strongly serrated. Intlam. hair recurved. 

 No Trlam. Psstg. org. short, recurved, clavate. Abd. hairless. Ptm. trun- 

 cated anteriorly. L. 430 |u. 



In moss. France. 



29. O. alata (Herm.) 1804 Notaspis alatus, J. Fr. Hermann, Mem. apt., p. 92 

 t. 4 f. 6 | 1826 Galumna alata, Heyden in: Isis, p. 613 | 1841 Zetes alatus, C.L.Koch, 

 C. M. A., fasc. 31 t. 6 \ 1844 Oribata alata, Gervais in: Walckenaer, Ins. Apt., v. 3 p. 258 

 | 1855 0. a., Nicolet in : Arch. Mus. Paris, v. 1 p. 431 t. 4 f . 1 ] 1877 Oribates alatus, 

 Canestrini & Fanzago in: Atti 1st. Veneto, ser. 5 v. 4 p. 81 | 1884 Oribata alata (part.), 

 Michael, Brit. Orib., v. 1 p. 257 1. 10 f. 1 5 | 1886 0. a., A.S.Packard in: Mem. Ac. 

 Washington, 0.4 p. 42 1896 Oribates alatus, Berlese, A. M. S., fasc. 78 nr. 9 , 1841 

 Zetes satellitius, C.L.Koch, C. M. A., fasc. 31 1. 13 (Nph.) j ?1895 Oribata emarginata, 

 Banks in : Tr. Amer. ent. Soc., v. 22 p. 7. 



Im. Brown or black ; short pyriform ; very round posteriorly ; polished. 

 Cephth. broad, bluntly-pointed, arched; no Lam. nor Trlam.; Psstg. org. 

 short (see 0. dorsalis) recurved, usually lanceolate or clavate but vary. Abd. 

 almost circular, Ptm. very large, flexible, light-colored, translucent, 

 they project nearly to tip of Rost. and are rounded anteriorly; 

 they have a sinuated (emarginate) lateral margin not seen from above ; they 

 have radiating lines. - - Nph. Broad, transparent, polished, straw-color to 

 brown; internal organs shew, dark. Rost. blunt, 2 pairs of Rost. hairs. 

 Psstg. org. dark, recurved, thin, slightly thickened distally. Dors, of Abd. 

 arched, hairless. - - Im. L. ca. 600 ju. 



In moss and lichen. Algeria, America (Kentucky), Belgium, England, France, 

 Germany, Italy, Netherlands, Switzerland, Sweden. 



30. O. avenifera Michael 1884 0. a., Michael, Brit, Orib., v.l p. 264 1. 11 

 f. 611. 



Im. Reddish-brown, not dark; almost globular when Ptm. are pressed 

 to body, more shield-shaped when expanded; polished (punctured unter high 

 magnification). Cephth. short, broad; Lam. long, narrow blades on edge; 

 C. lam. long, blunt, Lam. hair terminal. Psstg. org. oat-shaped, or fusi- 

 form, sessile, almost horizontal, pointing forward and slightly 

 inward. Tibia of leg 4 with a projection. Ant. margin of Abd. advancing 

 greatly in centre, Dors, of Abd. arched, hairless; Ptm. short but usually 

 extended. L. ca. 320 |u. 



In moss. Algeria, England. 



