524 BRITISH ORIBATID^. 



Nymph and Larva. 



These so closely resemble the perfect creature that 

 it is not necessary to describe them separately. The 

 principal differences are of course the monodactyle 

 claws, the smaller size, the lighter colour, which is 

 somewhat greenish in the nymph, but the very young 

 larva is often a darkish red-brown, which soon becomes 

 lighter, and that the larva does not carry any cast 

 skin, while the nymph carries a varying number, from 

 one to three, according to size. 



Distribution. — The species is common and generally 

 distributed — it is usually found in moss, most fre- 

 quently that growing on trees. 



Berlese, in his ' Acari Miriapodi e Scorpioni Ital- 

 iani ' (fasc. iii and Notes published separately in 

 1885), appears to have confused two species. He 

 treats this as a new species, calling it after Prof. Petro 

 Doderlein, and transfers the name and all the biblio- 

 graphy of this species to another species which appears 

 to be the " Nothrus scaliger ^' of Koch ; which Berlese 

 gives as a synonym. Haller, in his ' Milbenfauna 

 Wiirttembergs,' treats scaliger as probably a nymph 

 of theleprodus. I should not think that this would be 

 correct, but I have not found scaliger in England. 



Nothrus glaber,* sp. nov. 



Average length about "60 mm. 

 Average breadth about '32 mm. 

 Average length of legs (first and second pairs) 

 about '22 mm. 



Average length of legs (third pair) about •24 mm. 

 Average length of legs (fourth pair) about '28 mm. 



This species is very like N. tardus, from which it 



* Glaber, smooth, 



