1945] Notes on Neotropical Plebejince 3 
dated in all its genitalic elements (the aedeagus and its append- 
ages, the tegumen, cingula, fakes, uncus lobes and valves of the 
male, and the cervix bursae and vaginal armature of the female) 
from the Catochrysopince (containing the holotropical Leptotes 
Scudder and a huge array of palaeotropical species in several 
genera), the Glaucopsychinoe (containing, among others, the 
three holarctic genera Glaucopsyche Scudder, Scolitantides 
Hiibner [to which Phcedrotes Scudder and “ Shijimia Matsu- 
mura” fall as synonyms] and Philotes Scudder), the Everinoe 
with the holarctic Everes , the Lyccenopsince with the holarctic 
Celastrina Tutt ( = Cyaniris Scudder, nec Dalman), etc. 
The arrangement proposed in the present paper needs to be 
prefaced by a few words on taxonomic units. The strictly bio- 
logical meaning forcibly attached by some modern zoologists to 
the specific concept has crippled the latter by removing the 
morphological moment to a secondary or still more negligible 
position, while employing terms, e.g., “potential interbreeding,” 
that might make sense only if an initial morphological approach 
were presupposed. What I term species, in my department, can 
be defined as a phase of evolutional structure, male and female, 
traversed more or less simultaneously by a number of, conse- 
quently, more or less similar organisms morphologically shading 
into each other in various individual or racial ways, interbreed- 
ing in a given area and separated there from sympatric repre- 
sentatives of any other such phase by a structural hiatus with 
absence of interbreeding between the two sets. In other words: 
1. any two structurally indistinguishable individuals belong to 
the same species regardless of biological, physiological, geo- 
graphical or any other factors; 2. structurally distinguishable 
sympatric non-interbreeding sets represent different species re- 
gardless of all other considerations; 3. structurally distinguish- 
able sympatric individuals belong to the same species when they 
occur within an interbreeding set; 4. structurally distinguish- 
able allopatric sets belong to the same species if the hiatus 
between their structures is completely bridged by intermediate 
structures in other, not necessarily intermediate, areas; 5- ob- 
viously allied but structurally distinguishable allopatric sets not 
linked by such intergrades can be said to belong to different or 
the same species only by analogy, i.e., by analysing the struc- 
tural gaps between sympatric species or individuals possessing 
the same general type of structure. Conditions 2 and 4 do not 
