1905.] BRITISH MITES OF THE FAMILY ORIBATID^. 567 



The appearance of the living mite strongly recalled Serrarius 

 mici'ocephalus, but its chelate mandibles remove it from that 

 genus. It also bears some superficial resemblance to Notasjns 

 bi2nlis. 



Gen. NoTASPis Warren. 



NoTASPis MACULOSA, sp. nov. (Plate XX. fig. 1.) 



Adult. Length 520 /i. Colour light brown. Surface spotted, 

 the spots being in the epiostracum and easily rubbed off. Cephalo- 

 thorax very long and pointed, nearly | the length of the abdomen. 

 Lamellfe, long ridges, arising near the pseudostigmata, convei-ging 

 at first, and then extending parallel for | the length of the 

 rostrum. Pseudostigmatic organs long and slender, very coarsely 

 pectinated on their anterior border. Claws monodactyle. Ab- 

 domen long oval, somewhat truncated at each end. Legs long 

 and slender, with globular joints. 



Xymph and larva unknown. 



Three specimens were taken in moss from Xine Wells, Cambridge, 

 in May 1905. 



The nearest allies of this fine species are among the minute 

 forms of which ^". splendens is the type. Like them, it has a 

 peculiar habit of shaking its beaded legs as it runs. Its large size, 

 spotted surface, and pectinate pseudostigmatic organs render its 

 identification easy. 



XoTASPis scuLPTiLis, sp. iiov. (Plate XX. fig. 2.) 



Adult. Length 330 /j. This mite has a close general resemblance 

 to iV. sjjlendens, but, on careful examination, may easily be 

 distinguished from that species by the peculiar design of the ridges 

 on the vertex and notogaster. These are best understood from 

 the figure, but may be described thus : — 



The lamellae arise from the pseudostigmata, converge sharply, 

 and then continue forward and parallel. At the extreme point of 

 convergence there is a faint translamella, and from its extremities 

 ridges proceed backwards. On the notogaster there is a well- 

 mai-ked transverse ridge close to its anterior border ; the ends of 

 this ridge curve abruptly backwards, approach slightly, and then 

 separate again. 



Pseudostigmatic organs long, rough and hairy. 



Xymph and lai'va unknown. 



Ten or twelve specimens were found in wet Sj^hagmmi sent by 

 Miss Heath, of Cra}'ford, from the Devil's Punchbowl, Hindhead, 

 in June 1905. 



This species seems to be allied to Eremaeus novus Oudemans. 



Subfam. Xothrin^. 



Gen. XoTHRUS 0. L. Koch. 



XoTHRUS CRixiTUs, Sp. nov. (Plate XX. fig. 3.) 



Length 900 ^. Colour dark brown. Integument more fully 

 chitinised than is usual in this genus. 



Proc. Zool. See— 1905, Vol. II. No. XXXVIII. 38 



