ON SCOTTISH DESMIDIE.E 243 



109. S. Sebaldi, Reinsch. 



fi ornatum, Nordst. Rare. Ross Falls of Rogie ; 

 Aberdeen Brimmond, Slewdrum, old channel of 

 Dee below Aboyne, Powlair, near Dinnet, Tomachar ; 

 Kincardine plentiful in a moraine pool above 

 Cammie ; Perth Durdie Moor ; Kirkcudbright- 

 New Galloway. 



110. S. setigeruni, Cleve (S. Royanum, Archer). Extremely rare. 



Argyle Glen Coe (Mr. Archer, by whom only this fine species 

 has been found). It is not known to occur elsewhere in the 

 British Islands; and there are very few Continental localities. 

 Glen Coe specimens are figured on our Plate III. fig. 9. The 

 specimen in front view has been lying a little obliquely, hence 

 the end margin is too straight: it should be very slightly convex. 



111. S. sexangulare, Bulnh. Extremely rare. Inverness near Brin 



(Mrs. Farquharson). 



All the examples seen were 6-radiate, agreeing exactly with 

 Bulnheim's form. All the Welsh and Irish specimens which 

 have come under my observation were 5 -radiate. Mr. 

 Archer was the first to note this handsome form as a distinct 

 species ; it having turned up in one of his early visits, if not 

 his first, to Connemara. 



112. S. sexcostatum, Breb. Rare. Sutherland Loch Inver ; Aber- 



deen Brimmond, Ben-na-Chie, south of Birsemore, near 

 Craigendinnie, Dalbagie, Lochnagar, Glen Callater Table- 

 land ; Kincardine Nigg, near Durris Bridge, Gillan, Curran, 

 Muiryhaugh; Forfar - - Canlochan (a five-angled form); 

 Perth Ben Lawers, Rannoch. 



Sub. sp. productum, West. Not common. Sutherland, 

 Ross, Aberdeen, Kincardine, Forfar, Perth, Dum- 

 barton, Argyle, Renfrew. 



113. S. spongiosum, Breb. Not common. Sutherland, Ross, Inver- 



ness, Aberdeen, Kincardine, Forfar, Perth, Argyle, Stirling. 



114. S. subscabrum. Nordst. Very rare. Kincardine in a mor- 



aine pool in Glen Dye. 



115. S. teliferum, Ralfs. General. Occasionally with zygospores. 



1 1 6. S. fetracerum, Kg. General. 



117. S. tumidum, Breb. Not common. Sutherland, Ross, Inver- 



ness, Aberdeen, Kincardine, Forfar, Perth. 



1 1 8. S. turgescens, De Not.- Not common. Ross, Inverness, 



Aberdeen, Kincardine, Forfar, Perth, Wigtown. 



119. 5. Ungeri, Reinsch. Very rare. Inverness Loch Ruthven ; 



Aberdeen old channel of Dee below Aboyne ; Kincardine 

 Kerloch. 



