114 Proceedings of the Royal Physical Society. 



Localities in which I have found it are the following : — 



Upper Elf Loch, Braid Hills, common, May 1905, etc. (Ann. S. JV. H., 1905, 

 p. 215); pond in Botanic Garden, Edinburgh, Oct. 1905; Humbie Reservoir, 

 near Winchburgh, June 1906; Loch Leven, July 1906; marl pit, Davidson's 

 Mains, Aug. 1907. 



Fam. TUBIFICID^I. 

 Clitellio arenarius (Mull.). 



Plentiful in mud between tide-marks in Dalgetty Bay, west of Aberdour, 

 Fife, and at Bo'ness, Linlithgowshire, March 1910. 1 have compared Forth 

 examples with Plymouth ones received alive from Dr E. J. Allen, and 

 have no doubt of their identity. 1 



Dr Michaelsen (" Oligochaeta," p. 55) suggests that Dalyell's Lumbricus 

 littoralis may belong to the genus Clitellio. Johnston (i.e. p. 67) gives 

 C. arenarius from Berwick Bay, and Professor M'Intosh 2 has recorded it 

 from the shore at St Andrews. 



Tubifex tubifex (Miill.). 



Tubifex rivulorum, Lam. and others. 



Abundant in the mud of slow-running streams, ponds, and lake-margins 

 apparently throughout the area. I have submitted specimens to Mr Southern, 

 and he confirms my identification. Dr S. Macadam 3 and Dr T. Scott 4 

 have recorded Tubifex rivulorum from Water of Leith and Loch Leven 

 (June 1900) respectively. 



The localities in which I have found this worm are : — 



Lochend, Edinburgh, abundant in foul black mud, Oct. 1907; Bavelaw Burn 

 at head of Threipmuir Reservoir, May 1905; pond at Bush, near Roslin, June 

 1906 ; slow stream at head of Loch Fitty, Fife, June 1905 ; Cocklemill Burn, near 

 Elie, April 1906; Orr Water, Thornton, March 1910; stagnant pool at Blackness, 

 Linlithgowshire, and ditch near Falkirk, Stirlingshire, March 1910; ditch at 

 Balquliidder, south-west Perthshire, 2nd April. 



Tubifex benedeni (Udek.). 



Hemilubifex ater, Beddard in Proc. Zool. Soc., 1888, p. 486, fig. A. 

 //. benedii, Beddard's "Monograph of the Oligochaeta," 1895, p. 261. 

 Psammoryctcs benedeni, Michaelsen 's "Oligochaeta," 1900, p. 51. 



I have found this species in considerable abundance in the mud of the 

 Estuary of the Forth, west of Aberdour, and at Bo'ness, during the present 



1 Living examples of this and T. benedeni from Aberdour have since (May 1910) been 

 submitted to Mr Southern who confirms the identification. 



- "Marine invertebrates and Fishes of St Andrews," 1875, p. 114. 

 3 Proc. Roy. Phys. Soc, vol. iii. p. 234 (18(55). 

 1 9th Rep. Fish. Bd. Scot., pt iii., p. 273. 



