CELASTRINA ARGIOLUS. 395 



46. Bright " hylas-" or violet-blue — otherwise as in 16 — clara-suffusa, n. ab. 

 5. Violet- white — forewings with fairly narrow black marginal 



border, extending along costa from 



apex to discoidal lunule ; outer margin 



of hindwing spotted (from Bagovitza) =pallida, n. ab. 

 5a. , , forewings with broad black outermarginal 



and costal band; costa of hindwing 



suffused from apex to base, outer 



margin spotted = pallid a-lat a, n.ab. 



56. ,, forewings with broad outermarginal, 



costal, and inner marginal bands; 



hindwings also very much suffused 



(Nikko,. 4000ft.-5000ft., July 2nd, 



1904) =pallida-suffusa, n. ab. 



As far back as 1788, Borkhausen classified and described the figures 

 of Esper and Bergstrasser (Naturg. Eur. Schmett., pp. 174-175). 

 We have modified somewhat his descriptions in the following (taking 

 our notes from the original figures) : — 



a. Two ? forms, blue, well-marked marginal bands on forewings, spotted 

 margin to hindwings; underside well-spotted, especially marginally = a rgiolus, 

 Bergs., Nom., i., pp. 74-75, pi. xlv., figs. 5-6, 7-8. 



6. ? . With broad marginal border to all wings, that of hindwings containing 

 a row of faint lunules ; underside sparsely spotted, but trace of lunules on margin 

 of forewings = argiohis ab. (or cleobis, Sulz., Esp., ab.), Bergs., Nom., ii., p. 10, 

 pi. liv., figs. 5-6. 



c. <? . Blue, but showing faint discoidal lunules on upperside; underside with 

 a single strongly-marked transverse row of black dots crossing all wings (eight on 

 forewings, nine on hindwings), two others towards base of hindwing and fainter 

 discoidal lunules — thersayion, Bergs., Nom., ii., p. 4, pi. xlix., figs. 5-6. 



d. c? , with overdrawn (?) black margin, etc.* Borkhausen says : Upperside 

 bright blue, unspotted, forewings with narrow black-brown border ; underside 

 bluish- whitish grey, with a dark coloured lunule and tiny streaks and dots = 

 argalus, Bergs., Nom., ii., p. 18, pi. lx., figs. 4-5. 



\e.\ <? , pale bluish ; underside with slender obsolescent streaks and spots = 

 argyphontes, Bergs., Nom., pp. 15-16, pi. lviii., figs. 5-6.] 



/. 2 . Spring form, azure-blue, black border to hindwings, hindwings darker, 

 margin edged with black lunules, these again with white ; underside white, fairly 

 large, black, unringed spots; traces of marginal lunules = cleobis var., Esp., 

 Schmett. Eur., pi. liv. (contd. iv.), fig. 4a. J 



g. 2 . Highly-coloured ; reminds one of purple of Bithys quercus, possibly an 

 attempt to get warm mauve (with red tinge showing through blue), [compare 

 Esper's fig. of icarus, pi. Iv., fig. 5.] Hindmarginal bands very unnatural. 

 Underside blue-grey, with strong streaks and spots ringed with white = cleobis, 

 Esp., Schmett. Eur., pi. xl. (supp. xvi.), fig. 3. 



h. s . Azure-blue, inclining to mauve, fine black marginal line to all wings ; 

 underside greyish-blue, bluer at base, streaks and spots unringed, but well- 

 developed; no trace of marginal dots = cZeo6is, Esp., Schmett. Eur., pi. liv. 

 (contd. iv.), fig. 46. 



It may be here noted that there is considerable difference in the spotting 

 of the underside of the wings. One observes much difference in the 

 development of the usually obsolete lunules on the outer margin of the 

 wings on the underside, sometimes these are fairly distinct, and Aigner- 

 Abaii notes that, in some Hungarian males, they show on the forewings 

 as a row of black dots before the outer margin, but rarely in Europe 

 do they reach the development noticeable in some of Edwards' figures 

 of the North American spring forms (Butts. Nth. America, ii., Lye. 



* The Zoological Society of London's copy of this work is apparently dis- 

 coloured, and Bergstrasser 's description (rather than figure) should be relied on. 



f Borkhausen leaves out letter "e" and also omits this form. We wonder 

 whether there was any connection between these omissions. 



I Borkhausen, in his remarks, has mixed this up with Esper's pi. xl., fig. 3. 



