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VI. Notes on the specific distinction of certain species in the 
orbitulus and pheretiades section of the genus Plebeius. 
By G. T. Beraune-Baxer, F.LS., F.Z.S. 
[Read December 4th, 1912.] 
Puatses VI, VII, VIII. 
For many years I have felt that the varieties placed in 
Staudinger’s “ Catalog” under the two species orbitulus 
and pheretiades were not probably in their right positions, 
but other matters prevented me from settling the question 
until now. 
In October last I was looking up various points connected 
with the Lycaenidae in the British Museum, when I came 
across the species jaloka, Moore, which was placed as a 
form of orbitulus; a short examination convinced me that 
it was not a race of that species, and this was confirmed 
by the genitalia. ‘This incident made me go carefully 
into all the Eastern forms allied to those species, and has 
thus enabled me to elucidate various differences that I had 
previously believed to exist. 
My investigations have, I think, proved that jaloka and 
regagrus are not forms of orbitulus, but are distinct species, 
both being nearer to phereivades than to the HKuropean 
species. Dr. Chapman has already shown (Trans. Ent. 
Soc. 1908, p. 314) that pyrenaica is also a distinct species. 
Staudinger catalogues under pheretiades two forms which 
he calls v. pheres and v. pheretulus; the genitalia show 
that whilst pheretulus is correctly placed where it is, 
pheres, Stgr. (nec Boisduval), is distinct and that it is 
closest to jaloka, Moore. 
In the year 1890 Groum-Grshimailo (‘‘ Romanoft’s 
Memoires,” iv,-p. 391) suggests the name phereclus for 
a certain race found in the Trans-Alai, retaining pheretulus 
for the Pamir race and giving the name pherecydes to 
Staudinger’s pheres—a name preoccupied by Boisduval for 
a North-American species quite distinct from those now 
under consideration. He supposes that phereclus is the 
primitive form of this small assemblage of allied species, 
and considers that dardanus and aegagrus have developed 
off on the one hand, that pheres-pheretiades and pheretulus 
TRANS. ENT. SOC. LOND. 1913.—PARTI. (JUNE) 
