NOTES ON THE GENUS POTAMOGETON 181 



3. P. ANGUSTIFOLIUS, Berdch et Presl., var. LACUSTRIS, Ar, Benn. 



( = lucens, var. lacustre, Thore). 



Mr. Fryer objects to the name angustifolius x coloratus 

 as representing his x P. Bilhtpsii, the correct name being 

 " coriaceus x Zizii" or lacustris x coloratus of the " Catalogue." 



4. P. HETEROPHYLLUS, Schreb., var. TERRESTRIS. Schlecht, "Fl. 



Berol." (1823), i. p. 116. 



5. P. NITENS, Weber, var. MAXIMUS, Ar. Benn. Delete, and 



substitute var. prcslongifolius^ Tiselius ! . 



6. P. PERFOLIATUS, Z., var. MACROPHYLLUS. Blytt, " Norges 



Flora" (1861), p. 367, River Isla, E. Perth, 1882, 

 A. Sturrock, sp. 



var. PSEUDO - DENSUS, Asch. et Graeb. Lc. Loch 

 Brotachan, S. Aberdeen, alt. 2300 ft., Marshall, sp. 



var. CORDATO - LANCEOLATUS, Mert. et Rich. " Deut. 

 Flora" (1823), p. 852. Not uncommon. 



var. RICHARDSONII, Ar. Benn. ( - var. lanceolatus, 

 Robbins, non Blytt). Very common in the Great Lakes 

 and westward in North America ; Mill - dam, Selkirk 

 (1876), Brotherston, sp. ; Loch Ordie, E. Perth (1898), 

 W. Barclay, sp. 



7. P. PR^ELONGUS, Wulf., var. ANGUSTIFOLIUS, Graeb. ( = var. 



folio-angitstifolia, Hooker). 



8. P. ALPINUS, Balb., var. spathulifolius, Fischer, I.e. Black Loch, 



Cleish Hills, Fife, G. West, sp. Loch Fada, Colonsay, 

 Argyll, M. M'Neill, sp. 



9. P. PUSILLUS, Z., var. ACUMINATUS, Ar. Benn. Delete, as there 



is acuminatus of Fieber (1836), and substitute var. similis. 



10. P. RUTILUS, Wolfg. Probably limited to Anglesea. The 



Stafford (?) specimens are somewhat doubtful, though 

 decidedly near to Nolte's cizspitosus. 



11. P. FILIFORMIS, Notte, var. ALPINUS. Blyth, I.e., substitute 



P. marinas, L. 



ZOOLOGICAL NOTES. 



An Old-time Vermin List : a Correction. Since sending you, 

 as not previously published, " An Old-time Vermin List," see pages 

 no-iii, I have discovered that I was wrong in thinking that this 

 list had not before appeared in print. It is to be found on pages 

 158-159 of the "Edinburgh New Philosophical Journal," vol. xx., 

 1836 ; being part of a paper by P. J. Selby, F.R.S.E., F.L.S., etc., 

 etc., read before the Wernerian Natural History Society, on 2ist 



