38 BRITISH BUTTERFLIES. 



p. 263 (1909); Tutt, " Proc. Ent. Soc. Lond.," p. lxxx (1909). Corydon var., 

 Girard, " Ann. Soc. Ent. Fr.," ser. 4, v., p. 114 (1865); South, " Ent.," xx., p. 5, 

 pi. i., fig. 4 (1887); Sabine, " Proc. Sth. Lond. Ent. Soc," p. 70(1887); Krod., 

 "Allg. Zeits. Ent.," ix., p. 107(1904); South, "Brit. Butts.," pi. 109, fig. 10 

 (1906); Coote, "Proc. Sth. Lond. Ent. Soc," p. 80 (1907). Privata, Courv., 

 "Mitt. Schw. Ent. Gesell.," xi., p. 24 (1903); Battel, "Ent. Zeits. Guben," 

 xviii., p. 117 (1904) ; Seitz, " Gross-Schmett.," i., p. 316 (1909).— With the spots 

 on the underside tending strongly to obsolescence (Tutt). 



This name is applied to those forms in which several spots are 

 obsolete on the underside of one or more of the wings. The form is a 

 comparatively common one. Bartel mentions (Ent. Zeits. Gub., xviii., 

 pp. 115, 117) a $ from St. Moritz, July 21th, 1904, which has only 

 three and five spots respectively in the submedian row of the right and 

 left forewings, and six and four spots in that of the right and left 

 hindwings ; the right forewing has one basal spot only. Another $ 

 from St. Moritz has normally-spotted forewings, but the hindwings 

 with three to six little black spots, whilst a $ (of the albicincta form 

 on the upperside) has also several of the spots obsolete on the under- 

 side of the hindwings. Keynes took five specimens in the Binnenthal, 

 August 19th-21st, 1905, and Wheeler two in the Ehone Valley, on 

 July 30th and August 2nd, 1906, the first at Aigle, the second at 

 Martigny. Blachier records two $ s with the greater part of the spots 

 absent on the hindwings, one from Fully, the other from Brides- 

 les-Bains ; Bellier notes it as occurring near Paris and at Gavarnie ; 

 Aigner-Abafi records it (in litt.) from Budapest, Isaszegh, etc., and it 

 has, no doubt, a pretty general distribution as an aberrative form. 

 Newman reports (Ent. Rec, xx., p. 270) it from Dover. It is 

 occasionally taken in almost all localities, British and Continental, 

 that we have worked for the species. 



r>. ab. irregularis-obsoleta, n. ab. Corydon var., South, " Ent.," xx., pi. i., 

 fig. 4 (1887). Ginnus, Obth., " Etudes," xx., pi. iii., fig. 31 (1896).— The under- 

 side of one or three of the wings of the corydonis form ; the other wings almost 

 or quite normal. 



South 's example noted above is now in the " Adkin coll." 

 Blachier mentions (in litt.) the capture at Thoiry and Gex of two ? s, 

 each without ocellated spots on the right hindwing, the spotting of 

 the other wings normal. We have seen several in British collections. 



d. ab. impuncta, Courv., " Mitt. Schw. Ent. Gesell.," xi., pt. 1, p. 24 (1903); 

 Bartel, "Ent. Zeits. Gub.," xviii., p. 117 (1901); Rebel, " Berge's Schmett.," 

 9th ed., p. 72(1909); Seitz, "Gross-Schmett.," i., p. 31(5 (1909). Corydon var. 5, 

 Stphs., " Illus. Haust.," i., p. 89 (1828); Adkin, "Proc. Sth. Lond. Ent. Soc," 

 p. 107 (1902). titefanelU, Verity, " Bull. Ent. Soc. Ital.," xxxvi., p. 11 (1904); 

 xxxviii.,p. 29 (1906). — Without basal spots to undersideof forewings (Courvo: 



i. ab. unipuncta, Courv., "Mitt. Schw. Ent. Gesell.," xi., pt. 1, p. 24 (1903); 

 Bartel, "Ent. Zeits. Guben," xviii., p. 117(1904); Rebel, "Berge's Schmett.." 

 9th ed.,p. 72 (1909); Seitz, " Gross-Schmett.," i.,p. 316 (1909).— With only one 

 basal spot to underside of forewings (Courvoisier). 



k. ab. tripuncta, Courv., "Mitt. Schw. Ent. Gesell.," xi., pt. 1, p. 22. pi. ii., 

 fig. la (1903); Bartel, "Ent. Zeits. Guben." xviii., p. 117 (1904); Rebel. " B< 

 Schmett.," 9th ed., p. 72 (1909). — With three basal spots to underside of 

 forewings (Courvoisier). 



\. ah. quadripuncta, Courv., " Mitt. Schw. Ent. Gesell.," pt. 1, p. 22. pi. ii., 

 fig. lb (1903); Bartel, "Ent. Zeits. Gub.," xviii., p. 117 (1904); Rebel, " Berge's 

 Schmett.," 9th ed., p. 72 (1909). — With four basal spots to underside of four 

 win^s (Courvoisier). 



yu. ab. elongata, Courv., "Mitt. Schw. Ent. Gesell.," pt. 1. p. 19. pi. ii., fig. 2a 

 (1903).— With the lower basal spot streaked, the upper one normal (Courvoisier). 



v. ah. parvipuncta, Rebel, " Berge's Schmett.," 9th ed., p. 72 (1909). 



