Xotaspis 45 



Div. I. Sp. 1 4. With ant. corners of Dors, of Abd. projecting as a 

 small, free blade. 



1. N. exilis Nic. 1855 N. e., Nicolet in : Arch. Mus. Paris, v. 7 p. 448 t. 3 f. 7 | 

 1888 N. e., Michael, Brit. Orib., v.2 p. 359 t. 28 f. 1 5 | 1877 Oppia e., Canestrini & 

 Fanzago in: Atti 1st. Veneto, ser. 5 v. 4 p. 89 ! 1885 0. e., Canestrini. Prosp. Acarof., t.l 

 [>. 26 ; 1895 Oribatula e., Berlese, A. M. S., fasc. 77 nr. 6 j 1879 Oribata crassipes, 

 L.Koch in: Svenska Ak. Handl., v. 16 p. 116 t. 4 f. 3. 



Im. Light-yellow-brown, polished, very finely punctured. Lam. long 

 blades on edge, broader at distal than proximal ends; C. lam. 

 short; Trlam. a thickened line. Psstg. org. with short peduncle and pyri- 

 form head; Ung. trid., very hetd. Antero-lateral angles of Dors, of 

 Abd. project suddenly like rudimentary Ptm.; projection terminates 

 sharply at post. end. 2 rows of fine hairs on Dors, of Abd. and some round 

 margin. - - Nph. White grey or yellowish ; semi-transparent, internal organs 

 shew, giving color. Kost. and legs pink. Polished. Antero-lateral angles 

 do not project. Cephth. without markings or Lam. In other respects Nph. 

 like Im. - - Im. L. ca. 370 ju. 



In moss etc. England. France, Germany, Italy, ? Netherlands, Siberia, Novaya 

 Zemlya. 



2. N. plant! vaga (Berl.) 1884 Leiosoma nitens (err., non Oribata nitens 

 Gervais 1844!). Targioni-Tozzetti in: Ann. Minist. Agricol., p. 75 | 1892 Oppia tibialis 

 (err., non Notaspis tibialis Nicolet 1855!), Berlese, A. M.S., fasc. 64 nr. 1 | 1896 

 Oribatula plantivaga, Berlese, A. M. S., Crypt. II p. 59 || non 1895 0. tibialis, Berlese, 

 A. M. S., fasc. 77 nr. 5. 



Im. Yellow-brown. Lam. narrow blades deminishing anteriorly. No 

 C. lam. nor Trlam. Intlam. hair long, setiform, would reach tip of Host. 

 Psstg. org. veiy short, sessile, pyriform, almost hidden by advancing corner 

 of Abd. obovate; the ant. portion of edge of Dors, of Abd. very slightly 

 projecting; a few very fine hairs round margin, none on Dors, of Abd. 

 Tactile hairs of legs 1, 2, borne on apophyses. Ung. trid. L. ca. 450 ju. 



In moss. Italy. 



2 a. N. plantivaga var. sicula (Berl.) 1892 Oppia tibialis var. s., Berlese, 

 A. M.S., fasc. 64 nr. 1. 



Abd. hairless, longer than type. Palermo. 



3. N. similis Michael 1888 N. s., Michael, Brit. Orib., v. 2 p. 363 t. 31 f. 912 

 1896 Oribatula s., Berlese, A. M. S., Crypt. II p. 9. 



Im. Almost exactly like N. tibialis but a trifle larger and ung. mond. 

 L. ca. 550 n. 



In moss and leaves. England. 



4. N. tibialis Nic. 1885 N. t., Nicolet in: Arch. MusT Paris, v. 7 p. 449 t. 3 

 f. 8 | 1888 N. t., Michael. Brit. Orib., v.2 p.262 t. 28 f. 6 8 | ?1895 Oribatula t., 

 Berlese, A. M. S., fasc. 77 nr. 5 || non 1892 Oppia t., Berlese, A. M. S., fasc. 64 nr. 1. 



Im. Chestnut -brown, polished, veiy finely punctured. Lam. long 

 blades on edge, narrower at distal than proximal ends. No C. lam. 

 Trlam. a line, Psstg. org. with slender peduncle of moderate length 

 and recurved fusiform head roughened by points. Ant. Tibia with 

 rounded elevation at distal end from which tactile hair springs. Ung. trid. 

 strongly hetd. Antero-lateral corners of Dors, of Abd. project strongly, like 

 rudimentary Ptm., they project more than those of N. exilis, but not so 



