THE ENTOMOLOGICAL CODE. 21 



101. If all but one of the species of a polybasic genus are types of 

 other genera, then that one remaining, if otherwise eligible, is the 

 genotype. 



102. If all but one of the species of a polybasic genus are removed 

 to other genera, but not as types, this one remaining does not thereby 

 become the genotype — that is, an author does not restrict a genus 

 except by type selection. 



Example. — Alpha is established with four included species, none 

 cited as type. Later species 1, 2, and 4 are removed to the genus 

 Beta, but none of them as its genotype. Species 3, the only one not 

 removed from Alpha, is not thereby the type of Alpha, and no more 

 eligible for type selection than species 1, 2, or 4. 



103. The citation of a generic name in synonymy under another 

 generic name does not thereby restrict either name. 



Example. — Alpha is described with four originally included spe- 

 cies. Later Beta is described with Alpha quoted in synonymy, and 

 with the species 1 and 2 included. This does not restrict Alpha tu 

 the species 1 and 2. 



104. When an author changes a generic name, or unites two or 

 more genera, the genotypes remain unchanged. 



105. The type of a new T generic name which by sign or language 

 is clearly shown to be proposed to replace another valid generic 

 name is the same as that of the genus replaced. 



106. If a polybasic genus without designated genotype contains 

 among its originally unquestionably included species one not in 

 synonymy and of the same name as the generic name. I lien that 

 species is the genotype (type by absolute tautonomy). 



107. Genotypes fixed according to the above rules are stable, and 

 cannot be changed. No other form of genotype designation than 

 distinctly indicated above shall be valid ; therefore the use of "n. gen. 

 n. sp.," "sensu strictorum," the repetition of generic characters in 

 the specific description, the first species, the most common species, a 

 medicinal species, a figured species, nor one with the life history 

 given shall, of itself, be considered as genotype fixation. 



