﻿198 Proceedings of the Royal Physical Society. 



Tetracanthella (sp. ?). — A few specimens of a Tetmca/n- 

 thella — a genus not hitherto recorded from the British 

 Isles — were found by me among sphagnum, at an elevation 

 of about 2000 feet, on Ben Ledi, on 4th Sept. 1906 ; also 

 at 2500 feet on Stuc-a-Chroin on 17th of same month. 

 They do not appear to be Schott's T. pilosa, but further 

 study is necessary to settle this. 



Achorutes ^ji^?7:)?«Tcsce?is, Lubb. — Carribber, Linlithgow- 

 shire, a few in moss, March 1902. 



Tricena mirccbilis, Tullb. — In March 1906 I found several 

 examples of this minute species on the underside of a stone 

 lying among decaying seaweed on the shore west of Aber- 

 dour, Fife. 



Anurida maritima (Guer.), Laboulb. — Aberdour, April 

 1901, many floating on surface of rock pools ; Dunbar, 

 June. I find this species was recorded incidentally from the 

 coast east of Dunbar, by James Hardy, as far back as 1848.^ 



Thysanura. 



Prcemachilis hihernica, Carp. — It appears that the Thy- 

 sanuran recorded by Professor Carpenter and myself in our 

 first paper {I.e.) as Machilis -polypoda (L.) is not that insect, 

 but another since described by Carpenter.^ He has re- 

 examined some of my specimens, and finds they belong to 

 his new species. 



At the Koyal Botanic Garden, Edinburgh, I find a species 

 of Nicoletia, and a small Lepisma, unlike anything I have 

 seen before, apparently quite established, in one of the 

 greenhouses. 



Since submitting the foregoing paper to the Society I 

 have discovered two further additions, as specified below, 

 to the list of CoUembola. These raise the number now 

 known from this area to sixty-five. 



1 Trans. Berw. Nat. Cluh, ii. p. 286. MacJiilis mariiima is also mentioned 

 in the same paper. 



2 Irish Naturalist, 1907, p. 54. Cf. also my note in Ann. S. N. If., 1907, 

 p. 119. 



