( ix ) 
Only one 9 is known. This is in onr own collection, and 
was captured at Neu Spondinig, August 12th, 1909. The cJ s 
have been recorded under various names— caucasica, cory- 
donius, hafneri, etc. 
Great trouble has occurred owing to Staudinger in his 
Catalog, having erroneously referred the bright blue Asia 
Minor forms— caucasica, Led., corydonius, H.-)Sch., syriaca, 
Tutt, and the Spanish form— hispana, H.-Sch.— to polonus, Zell., 
as a variety of A. thetis, whilst retaining the various names 
for other forms to which the names were not originally given. 
This confusion we have already cleared up in A Xat. Hist, of 
the British Lepidop)tera, vols. x. and xi. 
The general variation of the two Agriadids is well known, 
as is also the parallelism of the forms in the 9 s. This latter 
is very remarkable, and extends from 9 s entirely brown 
without markings on the upper side {A. thetis ab. unicolor, 
Tutt; A. coridon ab. unicolor, Tutt) to forms well-banded 
with orange lunules (A. thetis ab. marginata, Tutt; A. coridon 
ab. aurantia, Tutt), and in another direction to forms in which 
the surface of the wings is so entirely blue-scaled that they 
might be mistaken for c^s (A. thetis ab. coelestis, Obth.; A. 
coridon ab. excelsa, Tutt). The extreme forms of blue-scaled 
9s sometimes occur discontinuously without intermediates. 
At other times they occur with well-defined intermediate blue- 
scaled aberrations. It may be advisable to note that the 
bluest (^s of A. thetis occur either in spring or in those autumns 
following summers in which the meteorological conditions have 
been bad during the feeding-up of the summer brood. The 
bluest 9s of A. coridon similarly occur either among the very 
latest that put in an appearance, or after wet and cold 
summers, or in bleak and exposed places ; in some localities, 
e.g., Royston Heath, Herts, the semisyngrupha form is almost 
racial. 
The racial forms of A. thetis are very restricted;— 
(1) var. pitnctifera, Obth.—Mauretania and Spain. 
(2) var. coelestis, Obth.^—Western France, is almost racial 
in the 9- 
The racial forms of A. coridon, chiefly confined to its most 
