Neic British Oribatidx. By A. D. Michael. 391 



Colour rather light yellow-brown. Texture polished, without 

 punctures (visible with say 200 diameters amplification). Shape 

 short pyriform. 



Kostrum pointed ; rostral hairs nearly straight. Palpi slightly 

 protruded. Lamellae thin, slightly undulated, blades on edge ; 

 widely separated posteriorly but touching anteriorly at about the 

 centre of the cephalothorax. Cusps very long, starting with a 

 rounded shoulder and twisting over so as to become almost hori- 

 zontal ; they have curved sides and diminish to a blunt point. 

 Lamellar hairs terminal, long, straight, directed forward. Pseudo- 

 stigmatic organs rather short, with slender peduncles extending 

 slightly beyond the pseudo-stigmata, and rather long fusiform 

 heads, which are set at a slight angle with the peduncles. Legs 

 rather short, fourth pair little longer than the abdomen. Femora 

 very broad, thin and rounded, with large blades. Tibiae much 

 enlarged towards distal ends. Claws monodactyle. 



Abdomen a very short ellipse, almost globular, anterior margin 

 slightly truncated ; at each antero-lateral angle is a blade-like pro- 

 jection with an undulated lateral and a square posterior edge. 

 There are a few hairs round the hind margin of the abdomen. 

 Genital and anal plates large, roundish, near together. 



I have found the species chiefly in moss on trees at Epping 

 Forest. It is not common. 



A species chiefly distinguished by the length of its rostrum and 

 lamellae. 



Colour and texture as in N. juncta. Shape elongated pyriform. 

 Cephalothorax very long, about five-twelfths of the total length. 

 Eostrum conical, pointed ; hind part of cephalothorax almost square. 

 Eostral hairs small, nearly straight ; palpi showing, almost at the 

 tip of the rostrum. Lamellge mere thickened bars, very long, 

 reaching more than half-way along the rostrum ; they approach 

 each other for about one-third of their length, commencing 

 posteriorly, then suddenly turn forward and continue parallel until 

 their ends. No cusps nor trans-lamella. Two short paired ridges 

 are situated at the base of the cephalothorax, commencing near the 

 median line, with small, chitinous, almost half-moon-shaped pro- 

 jections, from which thinner ridges run outward and slightly for- 

 ward, until they nearly touch the pseudo-stigmata ; then they turn 



