152 BRITISH FRESHWATER RH1ZOPODA. 



Length 5 5-9 7 /*; breadth 31-74/x; thickness 23-34 /A. 

 Habitat. Sphagnum. 



ENGLAND. N. and W. Yorkshire ; Derbyshire 

 (Brown] ; Shropshire ; Buckinghamshire ; Isle of 

 "Wight; Devonshire. 



WALES. Cader Idris and Criccieth (Oath), Llyn 

 Crafnant and Moel Siabod (Hoplc,.], Llyn Llydaw (West), 

 Carnarvonshire; Towyn, Merionethshire (Gash'). 



FIG. 159. Amphilrema stenostoma. x 520. An abnormal form from 

 Llyn Llydaw, Snowdon. (6?. S. West.) 



SCOTLAND. -- Shetlands ; Sutherlandshire ; Outer 

 Hebrides; Aberdeenshire (Brown] ; Perthshire (Ca.Ji, 

 Brown] ; Midlothian (Gash) ; Dumfriesshire ; Kirk- 

 cudbrightshire and Wigtownshire (Brown}. 



IRELAND. Clare Island and Inishturk, Clew Bay, 

 and mainland, Mayo ; Wicklow (Hopk.] ; Kerry. 



The length varies usually between. 55 and 65 yu, and 

 is less on an average than that of A. wrightianum, but 

 individuals found at Goathland, N. Yorks, and near 

 Scourie, Sutherland (coll. by W. West) measured 97 JJL. 



The test varies in colour from nearly colourless to 

 dark brown, owing to the attached particles. 



This species is perhaps rather less rare than A. 

 wrightianum, with which it is frequently associated. 



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