208 Annals Entomological Society of America [Vol. IV, 



Allotype designates the sex not represented by the holotype. 

 The allotype need not be described by the protologist (first 

 describer) ; it can be contained in the original as well as in any 

 subsequent description by other authors. Thus, if the protolog 

 describes only a holotype male, the first female subsequently 

 described is to be called the allotype; and vice versa. Mor- 

 photype applies only to the second form of a dimorphic sex. 

 Here also the date when and the author by whom described are 

 immaterial. (As the first form of a dimorphic sex will be repre- 

 sented in the holotype or allotype, there may be some doubt as 

 to the advisability of classing morphotypes among primary 

 types. However, as both forms of a dimorphic sex are of equal 

 importance to taxonomists I have placed morphotype in a posi- 

 tion similar to the holotype and allotype.) 



Thus far few others than cataloguers have made use of the 

 type-terminology here outlined. In fact, most of the terms 

 were originated by them, since the thorough acquaintance with 

 their subject gained by the compilation of catalogues has made 

 them more susceptible to the various needs of taxonomy. As 

 all of these terms are broad and permit of great latitude in inter- 

 pretation and application, the systematist ought not hesitate 

 to apply them. Past laxity in the treatment of types, and also 

 in their preservation, has resulted in infinite confusion and has 

 helped to increase synonymy beyond all reasonable bounds, 

 so that in some orders the synonyms average 1.5 to each valid 

 species. 



IV. Standards for Keys (Tables) of Genera and Species. 



1 . c? with appendage to hind tibia 2 



cT without appendage 4 



2. 9 with abdomen tufted 3 



9 with abdomen untufted Kilimanjaro 



3. Vein 6 usually curved in <?, 9 variable Popocatepetl 



Vein 6 usually straight Aconcagua 



4. 9 with abdomen untufted 5 



9 with abdomen tufted Matterhorn 



5. Vein 6 curved Elias 



Vein 6 curved at end in & Everest 



I defy anybody to reduce a specimen to its proper genus 

 with a key of the foregoing type. Unfortunately, only too 

 many of that sort exist and new ones are continually fashioned. 



A genus is the primary condition of taxonomy, and the use 

 of secondary sexual characters for generic definition is an out- 

 rage; an offense, which should not be condoned. Some of the 



