LYCAENA ARI0N. 325 



Rebel ascribes this name to Courvoisier, who, however, does not 

 -employ the term, regarding two basal spots on the underside of the 

 forewing as normal in all those Lycaenids which possess them at all. 

 Eebei correctly holds that one only is present in typical avion, not 

 merely as being more usual, but in accordance with Linne's description. 

 •Courvoisier's name unipuncta is, therefore, in this species, synonymic 

 with the type. The aberration with two basal spots is common in all 

 races and localities. 



(7) ab. tripancta, Courv., "Mitt. Schweitz. Ent. Gesells.," xi., pt. 1, p. 22 

 (1903); Gillm., " Soc. Ent.," xviii., p. 180 (1904).— With three basal spots 

 (Courvoisier). 



Courvoisier only mentions this form for the $ ; it exists, however, 

 in the 2 also, and is not very rare in either sex. 



(8) addenda, n.ab. — Extra spots appearing near the submedian row on the 

 underside. 



With the exception of extra basal spots, both on the fore- and 

 hindwings, the appearance of additional spots is extremely rare in this 

 species. There is, however, an example in the Brit. Mus. Coll., from 

 Courmayeur, with two extra spots inside the submedian band on each 

 of the hindwings, one of those on the right wing being joined to the 

 corresponding spot of the regular series. This is the only example 

 we have seen, but it is probable that others exist. 



(e) ab. subtus-maculis-exte7isis, Obth., "Etudes," xx., p. 15, pi. iii., fig. 20 

 <1896); Rebel, " Berges Schmett.," 9th ed., p. 75 (1909) ; Obth., " Lep. Comp.," 

 iv., p. 325 (1910). — When the spots of the underside are exaggerated (Oberthur). 



This is the form which in other species we have named ab. crassi- 

 puncta ; in the figure the spots are not very greatly enlarged, and in- 

 crease of size to this extent is not uncommon, especially on the forewing, 

 to which it is generally confined. The specimen figured was taken at 

 Vernet-les-Bains, where this aberration is reported as occurring with 

 some frequency. Though occurring elsewhere, it is rather character- 

 istic of the south, and is a distinguishing mark of vars. ligurica and 

 laranda, to some extent also of var. arcina. In extreme cases the spots 

 are considerably more elongated. 



(f) ab. striata, n. ab. Avion ab., Sheld., " Ent. Rec," xvi., p. 100 (1904). The 

 usual ocelli on the inferior wings are elongated into a series of streaks (Sheldon). 



This example had normal spots on the right forewing, and almost 

 obsolete ones of the left; it was taken just below the village of 

 Simplon on July 26th, 1903. We apply the name, however, to any 

 form possessing striated spots on the underside. They are extremely 

 rare in this species. 



(77) ab. impuncta, Courv., "Mitt. Schweiz. Ent. Gesells.," xi., pt. 1, p. 24 

 <1903) ; Grand, "Int. Ent. Zeits.," ii., p. 87 (1908).— Reduction of the basal spots 

 on the forewing to nil (Courvoisier). 



This is by no means a scarce aberration in either sex, and occurs 

 even in those races which are otherwise most strongly marked, e.g., in 

 both sexes of var. amuvensis. Slight though the aberration seems, it 

 always gives a peculiar facies to the underside of those specimens in 

 which it occurs. 



(0) ab. teleius, Bergs., "Norn.," ii., p. 73, pi. xliii., figs. 5, 6 (1779); Kirby, 

 " Syn. Cat.," p. 374 (1871). — Alis integerrimis fusco caeruleis maculis et punctis 

 atris versus marginem notatis, subtus pallidius fuscis ocellorumque duplici arcu 

 (Bergstrasser). 



