( xliii ) 



with one another and subordinate to the genns, so are the subspecies co-ordinate 

 with one another and subordinate to the species of which they are the components. 

 Since Linni applied the term tariefas to the forms which are not si)ecifically 

 different, we do not sec any reason against the use of this very convenient word 

 in the same sense for all the components of a species which differ from one 

 another. We understand, therefore, under variety/ not a particular category of 

 the components of a species, but employ the term for all the different members 

 of a species indiscriminately. The different categories of varieties must receive 

 special terms in a precise classification, and special formulae must bo employed 

 for them in a jirecise nomenclature. 



We distinguish three categories of varieties, namely : — 



I. liidicidiial ((tricty. — The following terms are employed by us : 



(1) lib. = iiherratio for individuals which stand outside the normal 



range of variation. 

 (2)/'. = forma in tlie case of di- and iKjlymorphism. If a form 



occurs rarely, it may be termed f. ah., in contradistinction to 



/'. norm. 

 (3) ?-y. or (?-/., if the resjjective form belongs to one sex only. 

 (4)_/. loc. = forma alicums loci, if, in the case of polymorphism, a 



form is restricted to one portion of the range of the respective 



variety or species. 



II. Generatory varieti/. — This variety is seasonal in Lepidoptera, and is 

 designated as 

 (5) f. t. — forma tempestati.'i. 



III. Geographical rariety or subspecies. — This is the highest category of 

 varieties. As the term earietas includes also other varieties, 

 it cannot be employed as such for tlie geographical variety except 

 in a precise nomenclature ; either a specifying attribute must be 

 added (var. geogr.), or an abbreviation of another term chosen 

 (sulMp.). But we do not see that it is at all necessary to put 

 any such abbreviation of a term before the subspecific name. 

 We can do without the encumbrance of the abbreviation — what 

 we can do without is unnecessary : and what is an unnecessary 

 encumbrance in nomenclature, common-sense compels us to 

 drop — by 

 (0) Simjily mutually agreeing that a subsi>ecies is designated by its 

 nanii' ailded to that of the Rj)ecies without any abbreviation before 

 the siilispccilir name. This means simplification of nomenclature, 

 nothing else. 



Tiic fiillowing diagram illustrates the nomenclatorial relation towards each 



