﻿President's Address. 



27 



In their paper on the micro-flora and micro-fauna of the 

 Upper Elf Loch, Braid Hills, 1898, to which I have already 

 had occasion to refer (see p. 10), Scott and Lindsay give a list 

 of Rotifers, identified by J. Hood of Dundee. The number of 

 species there recorded is 97, distributed among the several 

 orders thus — Rhizota, 6; Bdelloida, 11; and Ploima, 80. 



With the view of adding to the list of species, and at 

 same time of obtaining records from other localities to show 

 distribution in the area, I arranged, in the beginning of 1905, 

 with Mr James Murray of the Scottish Lake Survey, to 

 collect and send him material for examination for Rotifers. 

 An annotated list of 53 Bdelloida — including the description 

 of a new species — from this material is given in a paper 

 by Mr Murray, published a few months ago in the Proceedings 

 of this Society.! In a subsequent paper, in the Annals of 

 Scottish Natural History,'^ he records the non-Bdelloids (34) 

 he identified, and another Bdelloid ; this also includes a new 

 species. An additional Bdelloid and two additional Ploima 

 are recorded in his " Rotifera of the Scottish Lochs " (177 

 species), just issued.^ Since the above Forth lists were 

 written, 3 further Bdelloida and 4 Ploima have been collected 

 by me.* Of the 58 described Bdelloida identified by Murray, 

 49 are not in Scott and Lindsay's Elf Loch list ; and of the 

 40 belonging to the other orders, 24 are not in that list. 



Thus there are recorded up to the present time 170 



1 ''The Bdelloid Rotifera of the Forth Area," Proc. Roy. Phys. Soc. Edin., 

 xvi., No. 5 (1906), pp. 215-229. 



^ "Some Rotifera of the Forth Area, with Description of a New Species," 

 Ann. Scot. Nat. Hist., 1906, pp. 88-93. 



3 Trans. Boy. Soc. Edin., xlv., pt. i. (1906) pp. 151-191. The three 

 species referred to are: — Philodina megalotrocha, Ehr., Loch Vennachar; 

 Triarthra longiseta, Ehr., Edinburgh district; and Brachionus pala, Ehr., 

 Duddingston Loch. The first was previously recorded by Scott and Lindsay 

 in their Elf Loch list. 



^ They are as follows, those already recorded in Scott and Lindsay's list 

 being marked with an asterisk : — Callidina musculosa, Milne, Luffness 

 Marsh, July 1906; '^Rotifer hapticus, Gosse, Camilla Loch, Fife, August; 

 R. macroceros, Gosse, pool on Largo Links, August ; Notommata torulosa, 

 Duj., Luffness Marsh, July; *Dinocharis poecillum, Ehr., pool on Largo 

 Links, April; Scaridium longicaudatum, Ehr., pool on Largo Links, April 

 and August ; Notholca thalassia, Gosse, pool on Largo Links, April 



Additional localities for the following have also been noted: — Philodina 

 laticeps, Mur., from Gammarus pulex, ditch at Bavelaw, March 1906; P. 

 macrostyla, Ehr., Largo Links, April and August; P. aculeata, Ehr. ?, with 

 12 spines. Largo Links, August; Rotifer trisecatus, Web., Camilla Loch, 

 August; Anurcea aculeata, Ehr., pool by the Teith, Callander, September. 

 There was also found on Largo Links the species previously recorded as 

 Callidina eleganSj Ehr., but which is now regarded as an undescribed 

 species. 



