AGRIADES THETIS. 35T 



the discoidal and submedian series. Here, pale whitish, interneural 

 lines are frequently to be observed, sometimes merely as lines, at other- 

 times with black dots therein, the nucleus of the additional spots, and 

 similar pale streaks, are to be occasionally seen on the basal side of 

 the discoidal ; the spots thus formed are rarely exactly the same in 

 number on the two sides, although there is usually an attempt to keep 

 up a semblance of symmetry in position, and such as there are on 

 both sides usually agree in their situation. We have a whole row of 

 examples of addenda, captured at Cuxton in different years, in some 

 cases with the spots tending to coalesce almost to the extent of 

 Oberthiir's figure {op. cit.) on the forewing. In one specimen, on the 

 left forewing, there are 2 additional spots between the second sub- 

 median spot and the discoidal, 3 between the third submedian and 

 discoidal, and 1 between the fourth submedian and discoidal, 6 in all,, 

 whilst on the right forewing there are 2 between the second submedian 

 spot and the discoidal, and 1 between the third submedian spot and 

 discoidal, and others equally asymmetrical. Blachier notes a 2 taken 

 on the Saleve, June 2nd, 1909, in which the right forewing has 8,. 

 and the left forewing 7, supernumerary dots, also a $ captured at 

 Versoix, May 21st, 1908, with 5 extra spots on the left forewing, and 

 none on the right. Keverdin also notes [in lift.) specimens from the 

 Geneva district with additional spots asymmetrically placed. Alderson 

 captured a $ in the Pfynwald in June, 1909, with 7 additional spots 

 on the right forewing and 8 on the left forewing, the upper basal spot 

 also being double in both wings. 



ir. ab. impuncta, Courv., "Mitt. Schw. Ent. Gesell.," xi., p. 24 (1903). 

 Bellargus, Esp., " Schmett. Eur.," pi. lv. (contd. v.), fig. 2 (1778). Adonis var. 5, 

 Stphs., " Illus. Haust.," L, p. 90 (1828). Bellargus ab., H.-Sch., " Sys. Bearb.," 

 i., p. 122 (1843). Sapphirus, Stollw., " Lep. Faun. Pieuss.-Rhein.." p. 5-S (1803); 

 Seitz, " Gross-Schmett.," L, p. 315 (1909); Strand, "Int. Ent. Zeits. Guben," 

 iii., p. 78 (1909). Cinnus, Hofm., "Gross-Scbmett.," p. 9 (L687). Bellargoides, 

 Verity, " Bull. Ent. Soc. Ital.," xxxvi., p. 11 (1904); xxxviii., p. 28 (1906).— With 

 no basal spots on the underside of tbe forewings (Courvoisier). 



This common aberration has recently been referred to sapphirus, 

 Meig., which we have shown {Ent. Bee, xxi., p. 202) to be synonymous 

 with escheri, Hiibn. ; neither is it saphyrus, H.-Sch., really another 

 form of tketis, so that it is impossible to use the older name aapphirm, 

 Stollwerck, for this form. We, therefore, use Courvoisier's name. 



p. ab. unipuncta, Courv., "Mitt. Schw. Ent. Gesell.," xi.,p. 24(1903). Bell- 

 argus, Esp., " Schmett. Eur.," pi. lv. (contd. v.). fig. 6 (1778).— Only one basal, 

 spot on the underside of the forewings (Courvoisier). 



s. ab. tripuncta, Courv., " Mitt. Schw. Ent. Gesell.," xi., p. 22 (1903).— With, 

 three basal spots on the underside of the forewings (Courvoisier). 



r. ab. quadripuncta, Courv., " Mitt. Schw. Ent. Gesell.," xi., p. 22 (1903). — 

 With four basal spots on the underside of tbe forewings (Courvoisier). 



There are usually 2 spots between the discoidal lunule and base on> 

 the underside of the forewing, one under tbe other, but the modifica- 

 tions that occur are very numerous. There may be neither of these 

 spots present or either alone, either or both may be double, and either 

 or both may be converted into a short thick line, so that Courvoisier's 

 unipuncta may be represented by either the upper or lower spot, his 

 tripuncta by a single upper and double lower spot, or vice rasa, or a 

 dot and bar {punctistriata), with the dot either at top or bottom, whilst 

 quadripuncta may form two bars {bistriata),a,n& so on. Reverdin notes 

 {in litt.) of a series of 57 $ s, Swiss and Savoy specimens, that 6 have 



