TERRESTRIAL ACART OF THE TYNE PROVINCE 21 



17. Podothrombium magnum, Berl. 66. 



First pair of legs as in bicolor but the species is 



larger (always over 2 mm.) and wholly red. 

 Durham (Easington — R.S.B.) 



JOHNSTON lANA, Geo. {Diplothrombium, Berl.) 



Accessory claw of palp lateral with a basal tooth. 



Above the rostrum a conical process ('nasus'). 



Eyes very prominent, lateral. Dorsal trichomes 



elbowed at the base and seated on tubercles. 



Type : eximia, Berl. 



18. Johnstoniana eximia, Berl. 67. 



Diplothrombium eximium, Berl. 

 Johnstoniana errans, Geo. 



This interesting little species I usually find on dead 

 wood. Dr. George identifies it with Dr. Johnston's 

 " Wandering mite," but I cannot follow him. 

 Yorkshire, Cheshire, Scotland (Evans). 

 i8a. Johnstoniana errans, Johnston. 3 mm. 68. 



Rhyncholophus enafis, Johnston (Proc. Berw. Nat. 

 Club, 1852). Dorsal set^e on tall cylindrical 

 tubercles. The crista terminates behind in a 

 curious heart-shaped bald spot. 



Somerset, Yorkshire, Cambridge. 



19. Johnstoniana longipalpis, Berl. 



Tarsus i tuberculate at the base above. 

 Cheshire (Delamere— Dr. Jackson). 

 EOTHROMBIUM, Berl. 



Crista linear, the sensilli independent and unenclosed 

 on either side of the middle. Eyes quite sessile, 

 red, conspicuously unequal. Dorsal trichomes 

 spinous, simple, short and not very dense. Abdo- 

 men oblong ; cephalothorax well defined. 



Type : echinatum, Berl. 



