George : Lincohishire Freshwater Mites. 



An'CHOMENL S viDL'i s Paiiz. var. mcesti s Duf't. One specimen, near 

 Biiiijley, 1903. Evidently not common in the district. 



Anchomenl'S micans Nic. I took one example of this species on Haildon 

 Moor, April 1903, the first I have seen in the district. 



Olisthopls ROTI NDATIS Pavk. A common species on both Konibalcis 

 and Harden Moors. 



CVMINDIS VAPORARIORL M L. This is another of the ' Midg-ley Moor' 

 records, and althoug-h I have spent many half-days searchintf on 

 Rombalds Moor for it, I have so far failed to find it in that locality. 

 However, during- a ramble with Mr. E. P. Butterfield on Harden Moor, 

 near Bingley, on 19th May 1903, a glorious day, one of the few bright 

 sunnv davs of last summer, I turned up a single specimen in that 

 district. 



MiSCODERA ARCTICA Pavk. This lingering relic of an Alpine fauna is 

 extremely rare and local in this district. Since my first discovery of it 

 in 1884 I have not found more than seven or eight specimens, although 

 I have not worked for it every season. It seemed to be confined to an 

 old disused quarry on the edgfe of Rombalds Moor and always found 

 under very small stones embedded in the sand. 



It is always a sluggish creature and does not run when exposed as 

 the members of the Geodephaga usually do, but remains quite motion- 

 less. 



On 2nd June 1903, however, Mr. F". Jowett in my presence found 

 one under a large stone on the open moor very near to the old quarry 

 where it was orig-inally found, which is now filled up. 



BRADYCELLfS COGNATUS Gyll. Absolutely swarms on our moors. On 

 19th May 1903 it w-as found very abundantly on Harden Moor, and on 

 2nd June perhaps in greater quantities on Rombalds Moor. It was no 

 uncommon thing to see half a dozen under one small stone. 



Bradvcellus harpalinus Dej. Common on both Harden and Rombalds 

 Moor, 1903. 



Bradvcellus similis Dej. Xot so abundant as B. cognatus, but still 

 occurring in g-real quantities on both Harden and Rombalds Moor, 

 1903. 



LINCOLNSHIRE FRESHWATER MITES. 



C. F. GEORGE, M.R.C.S., 

 KiHo7i ■ hi - L indsey, Lin coin sh ire. 



Arrhenurus longiusculus n.sp. This mite more nearly 



resembles A. ohlongus Piersig- than any other mite I know, 

 being- very nearly of the same length. If, however, Piersig-'s 

 figure of that mite is compared with the one here given, which 

 was drawn for me by Mr. Soar from my mite, the difference will 

 be very apparent ; in oblongiis the widest part of the mite is in 

 the anterior third, whilst in longiusculus it is a little below the 

 middle, the external bristles also are remarkable, but perhaps 



Naturalist 



