﻿64:d Proceedings of the Royal Physical Society. 



the course of my own investigations. It will be observed 

 that according to my estimate about one-third of the 

 animals of the area have still to be discovered, so there is, 

 at our own doors, plenty of faunal work to occupy us 

 for years to come. In the working out of my collections 

 I have availed myself to the full of the help of experts 

 both in this country and abroad. With grateful acknow- 

 ledgment of their invaluable assistance I may fittingly 

 conclude this review. 



Postscript, Decemher 1908. — The delay in the issue of 

 this paper is due mainly to a long and trying illness, from 

 which I suffered last year. Eecords of any importance that 

 have occurred in the interval are inserted, in order to bring 

 the review down to date.^ This accounts for a few dis- 

 crepancies between the figures in the summary and those 

 given earlier in the paper. I wish here to express my 

 indebtedness to Dr J. H. Ashworth, who has kindly read a 

 proof and in other ways given me the benefit of his exten- 

 sive knowledge of invertebrate zoology and its literature. 



^ Some of my Enchytrmida have since been described by Mr R. Southern 

 in a paper on British and Irish Oligochaeta, in Proc. Roy. Irish Acad. 

 (vol. xxvii. p. 119); and in his series of articles on earth-mites, now 

 appearing in The Naturalist, Dr C. F. George has described several of my 

 Tromhidiidce. In the Journal of Pathology wiid Bacteriology (vol. xiii, p. 

 437), Drs Ashworth and MacGowan record the occurrence of Trypanosoma 

 cuniculi, Blanch., in the blood of tame rabbits from the Edinburgh district, 

 Bachmann's " Le plancton des lacs ecossais " [Arch, de Sc. phys. et nat. 

 Geneve, xxii., 1906, p. 359) should also be consulted. 



Bachmann's lists, which include some Flagellata from Loch Leven, are in 

 his " Vergleichende Studien iiber das Phytoplankton von Seen Sehottlands 

 und der Schweiz" {Archiv fur Hydrohiologie und Planktonkumde. Stutt- 

 gart, Bd. iii., 1907). 



