British OribatidsB. By A. D. Michael 179 



It must be remembered, regarding the name, that what Nico- 

 let calls the femur is what most modern authorities call the 

 trochanter : the latter name is used in this paper. 



47. Oribata setosa. Koch. 



Oribates setosus. Koch, fasc. 30, pi. 19. 

 Oribata setosa. Nic. p. 436. 



Nicolet describes the stigmatic hair as being cylindrical, but he 

 draws it as spatulate ; my specimens are even more spatulate than 

 his drawing. 



Found at Epping Forest. 



48. Oribata sphagni. Mihi, 7iov. sj)., PI. IV. Fig. 6. 



Average length about • 32 mm. 



„ greatest breadth • 20 „ 



Colour yellow brown. Texture nearly uniform, smooth and 

 polished. 



Cephahthorax, a long-shaped cone, furnished with a tectum 

 attached only by the base, but slightly raised above the dorsal 

 surface of the cephalothorax, and on the same level as the abdomen, 

 from which it is not divided by any depression. The tectum 

 covers about three-quarters of the length, and the greater part of 

 the width of the cephalothorax ; it has the lateral edges raised in 

 blade-like ridges, which project beyond the rest of the tectum and 

 terminate in a stout spine with a blunt tip projecting slightly 

 beyond the point of the rostrum. 



Stigmata hidden beneath the wing-like expansions of the ab- 

 domen. A large, curved, chitinous plate projects from the side of 

 the cephalotliorax, and encloses a space limited in front by a less 

 projecting ridge, and receives the first two joints of the fii-st pair 

 of legs ; the space is open above and below. The last three pairs 

 of coxa; are very close together ; the second joints of the first two 

 pairs of legs are gi'eatly enlarged ; the coxa; are hidden ; the second 

 joints are also the largest in the hind pairs of legs, but not as largo 

 as in the front pairs. The greater part of the tarsal joints of the 

 first pair of legs projects beyond the rostrum, the second pair do not 

 reach the point of the rostrum, and the fourth pair do not qnito 

 reach the posterior extremity of the body. The third joint is very 

 short in all the legs, and bears a short, stout, blunt spine on Iho 

 first pair, and sni;illor hairs on the other jiairs. The fourth joints 

 bear a long, straight hair in the first and fourth ])airs, and two 

 shorter curved hairs on all logs. All the tarsi bear numerous hairs. 

 The claws arc large. 



The ahlomen is oval, with a sinuated anterior margin, almost 



N 2 



