152 BRITISH FEESHWATEE EHIZOPODA. 



Length 55-97/x; breadth 3 1-74 /a; thickness 2 3-34 /x. 



Habitat. — Sphagnum. 



England. — N. and W. Yorkshire ; Derbyshire 

 {Brown) ; Shropshire ; Buckinghamshire ; Isle of 

 Wight; Devonshire. 



Wales. — Cader Idris and Criccieth {Gafh), Llyn 

 Crafnant and Moel Siabod {Eoplc), Llyn Llydaw (Tfesi), 

 Carnarvonshire; Towyn, Merionethshire (Gash). 



Pig. 159. — Amphitrema stenostoma. x 520. An abnormal form from 

 Llyn Llydaw, Snowdon. (G. 8. Vest.) 



Scotland. — Shetlands ; Sutherlandshire ; Outer 

 Hebrides; Aberdeenshire (Broiun) ; Perthshire {Cai-]i, 

 Brown) ; Midlothian (Co^-A) ; Dumfriesshire ; Kirk- 

 cudbrightshire and Wigtownshire {Brou'u). 



IjiiiLAND. — Clare Island and Inishturk, Clew Bay, 

 and mainland, Mayo ; Wicklow (Hojik.) ; Kerry. 



The length varies usually between 55 and 65 /x and 

 is less on an average than that of A. n-rujhtianum, but 

 individuals found at Goathland, N. Yorks, and near 

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



The test varies in colour from nearly colourless to 

 dark brown, owing to the attached particles. 



This species is pei'haps rather less rare than A. 

 ivrigldiamtm, with which it is frequently associated. 



