1 90 f"^"""- 



As to Konow's system of classification in general (i.e., the families, 

 snb-families, etc., in which he groups his genera), although I believe 

 that some at leafet of the alterations which Lave been proposed in it 

 will ultimately have to be adopted, I do not yet feel that I can 

 recommend with confidence any more satisfactory substitute for it. 

 I have no knowledge of any but Palaearctic genera, and without such 

 knowledge I feel unable to form an opinion of any value as to the 

 most natural classification of the Sub-Order as a whole. I propose, 

 therefore, now merely to enumerate such names of British genera as I 

 introduced into my List on Konow's authority but have since seen 

 reason to abandon, and to state simply (i.e., without argument to 

 justify my statements) the names which I now think should replace 

 them. Anything like a detailed argument on particular points would, 

 I think, be out of place in this series of papers, and would cei'tainly 

 be of little use or interest to most of the reader sf for whom they are 

 intended. I may, however, say, generally, that I have been guided by 

 two main principles : (1) to apply strictly the law of priority according 

 to the rules now generally adopted by Zoologists ; and (2) to cite 

 names in the forms given to them by their original authors without 

 attempting, as Konow and others have frequently done, to " correct " 

 them according to the supposed requirements of philology. 



The following, then, are the changes in my List (Ent. Mo. Mag., 

 May, 1903), which, as at present advised, I believe to be necessary: — 



Sub-Family 2. 



For Macrocephus Sclilecht substitute Hartigia Schiodte. 



„ Astatus Pz „ Etimetabolus Selmlz. 



(Or else omit this genus altogether, for I now feel sure 

 that it is not really British !) 



For Cephus Latr eubstitute Astatus Jur. 



„ Trachehis Jnr ,. Trachelastatus M. and D. 



Sub-Family 8. 



For Arge Schr substitute Tenthredo L. 



„ Schizoceros Lep „ Schizoceka Lep. 



Sub-Family 9. 



For LopJiyrus Latr substitute Pteronus Jur. 



And add the name of a genus which was not known 

 to me as British till 1913— viz., Monoctenus Dhlb. 

 (cf., Ent. Mo. Mag., 1913, p. 143). 



t Those, however, who wish to know my reasons may consult Mr. Rohwer's work on "The 

 Genotypes of the 8aw-FUes," U. S. Dept. Agric., Washington, 1911, Bur. Ent., Tech. Ser. No. 20; 

 and that of Mr. Durrant and myself on "The Jurinean Genera," Trans. Ent. Soc. Lond., 1914 

 (especially pp. 371-386). 



