VI 



EpiJogue 



The advantage of such a list of species will be clear to all and will 

 I hope save much future labour. 

 I gladly ackno\vledge the continued help afforded to me by those 

 colleagues \vhose nalues I listed in my previous Introduction and to 

 those may be added the following \vhose assistance has been of great 

 valu to lne during these later years: J. .Ardagh, G. J. Arro\v, 1\laj. 

 E. E. Austen, R. Baker, D. Bannerman, F. Barnett, W. E. Barnett, 

 J. C. Battersby, H. A. Baylis, I{. G. Blair, E. Browning, G. E. Bryant, 

 1\1. Burton, E. A. R. Bush, W. E. China, G. W. F. Claxton, Prof. 

 F. J. Cole, L. R. Cox, F. W. Edwards, W. J. Fox of Philadelphia, 

 A. G. Gabriel, F. J. Griffin, L. Guillaume of Strasbourg, l'vL J. Hardy, 

 Capt. A. F. Hemming, IVI. A. C. Hinton, A. S. Hirst, A. T. Hopwood, 

 D. E. I{immins, N. B. I{innear, R. I{irkpatrick, F. Laing, \V. D. Lang, 

 J. R. Loe\ve of Berlin, Sir G. A. K. 1\1 arshall , C. C. A. 1\ionro, G. H. G. 

 
io"Ter, J. J. 1\lugford, Baron Nopsca of Vienna, J. R. Norman, 

 H. \V. Parker, W. H. Perrett, C. Tate Regan, A. Reeley, F. Reeley, 

 Capt. N. D. Riley, G. C. Robson, A. E. Salisbury, F. C. Sawyer, 

 \V. L. Sclater, H. Seely, G. A. Sluith, G. F. H. Slnith, B. H. Soulsby, 

 H. Stringer, vV. E. S\vinton, W. H. T. Tams, H. D. Thomas, Capt. 

 .A.. I{. Totton, A. C. Townsend, H. B. Usher, B. P. Uvarov, J. C. 

 Vickery, T. F. Vincent, J. \Vaterston, R. J. West, E. 1. vVhite, 

 G. P. Whitley of Sydney, R. Winckworth, C. \Vood. 

 Sir Sidney Harmer (Polyzoa), G. 1\1. Mathews (Birds) and T. H. 

 \Vithers (throughout), have read my proofs to my great satisfaction. 

 As regards the printers all I need say is that hundreds of pages 

 have come to me \vithout a typographical error and of the alterations 

 lllLldc by me the bulk have been my own fancies, wrong alphabetical 

 arrangcl11ents or additional matter. No \vords can sufficiently thank 

 the compositors and readers of the Cambridge University Press for the 

 exceptional care sho\vn by them in interpreting my n1anuscript and 

 I thank theln heartily. 

 Now my work is finished it may be well to glance at the difficulties 

 met with during its compilation. In any well-appointed Natural 

 History Library there should be found every book and every edition 

 of every book dealing in the remotest \vay with the subjects con- 

 cerned. One never knows wherein one edition differs fron1 or 

 supplements the other and unless these are on the same table at the 

 same time it is not possible to collate them properly. Moreover for 

 accurate work it is necessary for the student to verify every reference 

 he may find; it is not enough to copy from a previous author; he must 

 verify each reference itself from the original. Bad work, for which 

 there is little excuse, is only too common. This want of every book 

 and every edition has been a serious hindrance and loss of tiIne to 



