514 BRITISH ORIBATID^. 



pliyses and hairs by the progaster. Genital and anal 

 plates close together, the former almost pentagonal, 

 the latter longer and coming to a point posteriorly. 



Distribution. — I think that this species is generally 

 distributed, but it is not common. It has been recorded 

 in Germany ; possibly also in France and Italy. 



NOTHRUS EICARINATUS,* Koch. PI. XL VII A, figS. 1 — 5. 



Nofhrus bicarinatus, Kocli. Fasc. xxix, fig. 16. 



— ventricosus, — Fasc. xxxviii, fig. 3. 



— rostratus, — Fasc. xxix, fig. 19? with tlie lamellar 



hairs carrying dirt. 



— bicarinatus, Nic. P. 456, pi. vii, fig. 3. 



— — Can. e Fan., p. 26. 



— — Haller. P. 306. 



— — Berlese. Acari, &c. Ital., fasc. xvii, pi. iv. 



Average length about '75 mm. 



Average breadth about "35 mm. 



Average length of legs (first and fourth pairs) about 

 •40 mm. 



Average length of legs (second and third pairs) 

 about '30 mm. 



G. Oanestrini, in his ' Prospetto dell' Acarofauna 

 Italiana,' p. 31, gives this species as a synonym of 

 N. serjnis, which is a mistake, as Berlese has already 

 pointed out. 



Colour brown, of medium depth ; the creature, how- 

 ever, usually covers itself with dirt to such an extent 

 that the colour cannot be seen, nor indeed can the 

 texture or markings. 



Texture rough and dull. The whole creature is 

 strewn with irregular, short, villous processes of the 

 cuticle, which are easily rubbed off, but when in situ 

 give a rough and granular effect. 



Cephalothorax not so much hidden by the progaster 

 as that of N. horridus ; large, nearly as wide as the 

 abdomen. Rostrum rather short and wide. Eostral 



* Bis, twice ; carina, a keel. 



