THE ENTOMOLOGICAL CODE, re 
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 tha 
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.—A [pha 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.—A pha 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 to 
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 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, then 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. 
