IXTROKUCTION. 



tlie generic name. For instance, tiie genus A mpelis of 

 Linnaeus contains a number o£ species now referred to 

 quite different genera, but if the quotations given 

 under each are examined it will be found that Ampelis 

 garndus of Linnteus is the Ampelis of the older 

 authors, and should therefore be fixed as the type of 

 Linnseus' genus. This method of the determination 

 of Linnsean types was first suggested by Prof. Newton 

 many years ago *. 



In the present List a type is assigned to each genus, and in 

 Appendix III. (p. 356) the method by which the type has 

 been determined is given. Where there has been any other 

 usage or difference of opinion, the Committee's reasons for 

 the course adopted are given. 



Li a few cases where the spelling of the author of a 

 generic or specific name is obviously incorrect, either through 

 a misprint or by error, the more correct form has been 

 adopted. Instances of this are Otocorys for Otocoris, 

 ^'Egitlialus for ^gitlialos, Haliaetus for Haliaetus. 



Specific Names. 



Except in cases already noted, which are marked 33. C. in 

 the List, the oldest certain names in the judgment of the 

 Committee have been assigned to each species. For much 

 help in deciding which are the oldest names and other help 

 in nomenclatural questions the Committee wish to thank 

 Mr. T. Iredale. 



Trinomials have been used for subspecific forms when 



these occur within our limits, but in the cases where only 



the typical form of the species is found in the British Islands, 



or oven when it, together with a distinct subspecific form 



* ' Ibis,' 1876, p. 94. 



