AGRIADES CORIDON. 43 



resurrected by Bartel as an ab.of A.corid<m(Ent. Zeits. Gnben,xvih., p. 

 114). The recent authors, therefore, who have referred the figure of 

 tiphys, Esp., to A. coridon, are entirely wrong in their identification. 

 The aberration, which Gerhard twice figures (Mori., pi. xxxii., fig. 4 ; 

 pi. xxxviii., fig. 4), appears to be a very common one in most parts of 

 Europe ; indeed, it is difficult to capture any considerable number of 

 specimens in some localities without finding this form. Occasionally 

 the two lower spots of the submedian series unite with the lower basal 

 spots, as in Agriades thetis, Polyonnnatus icarus and other allied species, in 

 both sexes, forming a double arch (biarcuata). We have examples of pari- 

 siensis in our collection from widely different localities, Fontainebleau ( $ 

 and 2 ), Weesen Marsh ( $ and 2 j, Arolla ( J ), Alios ( 2 ), Gex ($). In 

 Britain, it is common at Cuxton, Dover, Bevingdean, and the Brighton 

 district generally, Eastbourne, etc., and Sladen particularly notes it as 

 occurring in the form titkonus (syngrapha) in Wiltshire. Prideaux records 

 it as being- not rare in the Isle of Wight in 1895, sometimes occurring only 

 on one side. It occurs commonly, especially among the 2 s, at Podsused 

 in Croatia (Grund), and is taken at Budapest, Isaszegh, Kocsocz and 

 Eperies in Hungary (Aigner-Abafi), at Giesenerberg, near Hanover 

 (Peets), near Crefeld, on the Miindelheim Dyke, in the Bhine Provinces 

 (Rothke), at Grotzingen in Baden (Gauckler), and in Italy in the 

 Florence district (Verity). Blachier notes (in litt.) that $ s of parisi- 

 ensw, semiarcuata and biarcuata are common in the Geneva district, 

 and 2 s not at all rare. Keynes notes it as occurring August 19th- 

 21st, 1905, with swarms of the type at damp places on the path in the 

 Binnenthal. A specimen taken at Val Tournanche, August 16th, 1905, 

 is I-nigrum. rather than parisiensis, being quite straight and not arched, 

 another came from the Grand Saleve, July 28th, 1904, and a similar 

 one from the St. Gothard, August 3rd, 1907 ; this seems to occur when 

 the 6th submedian joins the basal, leaving the 7th (lowest) submedian 

 free. From Arolla ( J ), Preda ( ? ), Via Mala ( 2 ), Barcelonnette ( 2 ), 

 Gresy-sur-Aix, etc., we have specimens of the parisiensis form on one 

 side and semiarcuata on the other. Muschamp notes a 2 with the 

 fore wings of the parisiensis form, thehin&vsings obsoleta ( — ah.p'arisiensis- 

 obsolfta). It has been supposed by some authors 'that Gerhard merely 

 intended parisiensis for the arcuate underside form of titkonus (maris- 

 colore), but he figures the underside of the latter as quite normal, and 

 his description (supra) appears to us to show that he only intended to 

 discriminate between the two abs. sent out from France (1) as niaris- 

 colore from ''France" generally, (2) the unnamed arcuate form, 

 chiefly from Fontainebleau. Hemch-S chaffer, however, notes (Sys. 

 Bearb., vi., p. 27) the arcuate underside form as occurring in syngrapha, 

 and Berce gives a figure thereof (Fn. Fr., i., pi. vi., fig. 7) as the 

 underside form of sijmjrapJia, both without reference, however, to 

 Gerhard's name parisiensis. Wheeler says that this arcuate form is 

 common at Royston, w T here semisyngrapha may almost be regarded as 

 racial. 



Local Races. 



There are few local races of this species outside those found in the 

 Riviera, Spain, and south-western Asia, and those that are described 

 as such appear to be merely special developments of widely-distributed 

 forms occurring elsewhere as aberrations more or less commonly, e.g., 



