orbitulus and pheretiades section of genus Plebeius. 211 
Before closing these notes I should like to make a few 
brief remarks on the species orbitulus. 
Orbona, Gr. Gr., (1891), Hor. xxv, p. 453. 
Syn. orbitulinus, Stgr. (1892), Iris, v, p. 318. 
,, oberthuri, Stgr. (1901), “ Catalog,” p. 81. 
It is curious and interesting to find precisely the same 
large form of this well-known European species occurring 
in the Pyrenees, in South-East Siberia, Mongolia and Amdo. 
I have specimens that if unlabelled and mixed up it would 
be absolutely impossible to separate out again. Groum- 
Grshimailo’s name has priority, and the other two so far as 
I am concerned must sink as synonyms to it. 
Menetries’ form wosnesenskw from Kamschatka is de- 
scribed from a 2; of this I have very little doubt. The 
form from that region is slightly larger perhaps than Kuro- 
pean specimens, though it shows very little if any difference 
when compared with the other Far Eastern and the Pyre- 
nean races; it is very doubtful if the white spots shown in 
the figure would persist, and, when it is remembered that 
they do not appear in any of the few males that I have 
seen from that district, it would seem almost well to discard 
the name. I am, however, loth to do it on insufficient 
material, and therefore propose to retain it until more 
collections come to hand from that somewhat remote region. 
Plebeius orbitulus is a variable species; I have specimens 
of the 2 with white dots as in wosnesenski from several 
districts, and on Mount Canigou (Pyrenees) last summer 
I obtained many specimens which were also excessively 
dark. 
EXPLANATION OF Puiates VI, VII, VIII. 
PEATH. VI. 
. Plebeius orbitulus. 
. Plebeius aegagrus. 
. Plebeius jaloka. 
. Plebeius pheretiades. 
. Plebeius pherecydes. 
Fic. 
Om 0 DD me 
All magnified x 25. 
