i9i8. Phillips & Stelfox. — Range of Pisidium hihernicum. 45 



Loc. — Llynau Mymbyr, iu the Snowdonian Mts. Coll. — CO., Sept.,igii. 



Alt. — -588 ft. Assoc. — P. lilljeborgi. Remarks — Recorded as P. 



pusillum by CO., ibid. pp. 353-4 ; and by B.B.W., Cat., p. 65. 

 Loc. — Llyn Dwythwch, in the Snowdonian Mts. Coll. — CO., July, 1916. 



Alt.^ — 920 ft. Assoc. — No other Pisidia seen. Remarks — See /. of 



C, vol. XV., p. 232. PI. II., figs. 13, 14. 

 Loc. — Llyn Padarn,^ in the Snowdonian Mts. Coll. — CO., June, 1917. 



Alt. — 340 ft. Assoc— 7P. casertanum and P. suhtruncatum. 

 Loc. — Llyn Peris,^ in the Snowdonian Mts. Coll. — CO., June, 1917- 



Alt. — 340 ft. Assoc. — P. lilljeborgi and P. obtusale. 

 Loc. — Llyn Anafon (Aber Lake). Coll. — CO., June, 1917. Alt. — 1,630 



ft. Assoc. — P. casertanum, P. nitidum, P. milium and P. lilljeborgi. 

 Loc. — Llynau Diwaunedd, Moel Siabod. Coll. — CO., Sept., 191 1. 



Alt. — 1,208 ft. Remarks — Referred by B.B.W. to his P. pusillum. 



See Cat., p. 65. 

 Loc. — Llynau Mymbyr, Capel Curig. Coll. — CO., Sept., 191 1. Alt. — 



588 ft. Remarks — Referred by B.B.W. to his P. pusillum. See Cat., 



p. 65. 



Merionethshire. 



Loc. — Fairbourne, near Barmouth, running water in a ditch behind the 



sea-wall. Alt. — Sea-level. Assoc. — P. subtruncatum. Remarks — 



B.B.W. [in Hit.) refers these to his P. nitidum. 

 Loc. — Llyn Lliwbran, in the Aran Mts. Coll. — CO., June, 1917. Alt. — 



1,500 ft. Assoc. — No other Pisidia seen. Remarks— B.B.W. {in 



Hit.) refers these to his P. nitidum. 

 Loc. — Llyn Cyri, Cader Idris. Coll. — CO., June, 1917. Alt.— 1,200 ft. 



Assoc. — P. nitidum. Remarks — B.B.W. {in Utt.) refers these to his 



P. nitidum. 

 Loc. — Llyn Dulyn, near Llanddwye, in the Ardudwy Mts. Coll. — CO., 



June,i9i7. Alt. — 1,740 ft. Assoc. — P. obtusale. Remarks — B.B.W. 



{in litt.) agrees. 

 Loc. — Llyn Irddyn, in the Ardudwy Mts. Coll. — CO., June, 1917. 



Alt. — 1,029 ft. Assoc. — P. casertanum Sind P. milium. Remarks — 



B.B.W. {in litt.) agrees. 

 Loc. — Llyn Y Bi, in the Ardudwy Mts. Coll. — CO., Oct., 1916. 



Alt.— 1,400 ft. Assoc. — P. casertanum. Remarks — B.B.W. {in 



litt.) refers these to P. obtusale. 

 Loc. — Llyn Cwm Mynach (a peaty tarn), in the Ardudwy Mts. Coll. — 



C.O., June,i9i7. Alt. — 950 ft. Assoc. — P. casertanum. Remarks — 



B.B.W. {in litt.) agrees. 

 Loc. — A nameless tarn on Y Garn, near Dolgelly (peaty), in the Ardudwy 



Mts. Coll. — CO., July, 1917. Alt. — 1,800 ft. Assoc. — P. cas- 

 ertanum. [End of CO.'s notes]. 



Anglesey. 

 Loc. — Gaerwen. Coll. — J. E. Cooper. 



1 The Llanberis Lakes. 



