S. A. Miller—Glyptocrinus and Rédécrinué.  10T 
osed, ought as a general principle to be permanently retained 
o this consideration we ought to add, the injustice of erasing 
how much the permission of such a practice opens a door to 
obscure pretenders for dragging themselves into notice at the 
expense of original.observers.” 
5 name originally given by the founder of a group, or the 
describer of a species, should be permanently retained to the 
exclusion of all subsequent synonyms.” 
A - 
s the num of known species which form the ground- 
work of zoological science is always increasing, and our knowl- 
extensive. It th comes necessary to subdivide the contents 
f old groups, and t ake their definitions continually more 
restricted rrying out this process, it is an act of justice to 
i h 
all which is sound in its nomenclature should remain unaltered 
amid the additions which are continually being made to it.” 
“A generic name, when once established, should never be can- 
celled in any subsequent subdivision of the group, but retained in 
a restricted sense for one of the constituent portions.” : 
‘When a genus is subdivided into other genera, the original 
name should be retained for that portion of it which exhibits in 
the greatest degree its essential characters as at first de ned. 
Authors frequently indicate this by selecting some one species as 
a fixed point of reference, which they term, the ‘type of the 
genus.’ When they omit doing so, it may still in many cases be | 
correctly inferred that the first species mentioned on their list, if 
found accurately to agree with their definition, was regard y 
them as the t pe. A specific name or its ey de will also 
often serve to point out the particular species, which implica- 
tion must be regarded as the original type 0 genus. In suc 
5 
its typical signification, even when later authors have done oth- 
erwise,” ; 
“The generic name should always be retained for that portion 
ee oneal genus which was considered typical by the author. 
am 
