178 BRITISH BUTTERFLIES. 



transverse series of six spots, parallel with the outer margin of the^ 

 underside of the forewings. Zeller records (Stett. Ent. Ztg. s 1872, 

 p. 37) two $ s from Bergiin with specially small dots. Walker notes 

 (Ent. Mo. Mar/., xliii., p. 134) a $ , very pale beneath, with all the 

 markings obsolescent, in the "Dale coll." He writes (in Z?Yi.) that "all 

 the ocellated spots on the underside are present, but the black centres 

 much reduced in size (not more than half normal), pale in tint, and 

 the white rings much reduced. In the forewings the submarginal 

 spots are quite evanescent .... and on the hindwings there is no trace 

 whatever of the usual metallic-blue scales in these spots." In his- 

 group of elongate forms, " Form* elongate," Courvoisier notes (Mitt. 

 Schweiz. Ent. GeselL, xi., p. 20) two $ s and one $ , P. argus, with 

 some of the ocellated spots of the curved discal row elongated in a 

 direction parallel with the nervures. The most extreme forms of this 

 kind appear to be ab. maritimus, Stphs. (ab. fadiata, Obth.), and ab.. 

 juncta, n. ab. In both, a series of extended lineations runs parallel 

 with the hind-margin of both wings ; in the former, the lineations are 

 largely cuneiform and mere extensions of the normal dots of the sub- 

 median row, whilst in the latter, the lineations are made by the union 

 of the dots of the submedian row with the corresponding black inter- 

 neural lunules that edge the orange lunules internally. A magnificent 

 specimen of this latter aberration' is in the British Museum coll. Still 

 another form of radiate development occurs, viz., that in which the 

 submedian row of spots is entirely absent, but the black internal 

 lunules themselves form, on all the wings, a series of cuneiform 

 spots pointing towards the base = ab. runeata, n. ab. The only 

 example of this form that we have seen was taken bv Mrs. Prideaux at 

 Berisal. Krodel has described and figured (All;/. Zeits. f. Ent., is..,. 

 p. 53, fig. 20) a $ in which the underside of the hindwings 

 shows the confluence of the black lunules edging the orange 

 marginal lunules, with the corresponding spots of the submedian 

 row (as in juncta), whilst on the forewings the ocellated spots 

 of the submedian row are quite absent ( = ab. obsoleta-juncta, 

 n. ab.) [Krodel's reference (op. n't.) of H.-Schaner's fig. 217, to 

 this species, is erroneous; it is evidently an example of argyrog- 

 noinon as the author says.] Sometimes the spots are united so 

 as to form a transverse band, e.g., Bayne records a specimen from 

 the New Forest with spots on hindwings coalescing so as to form 

 a short band. Moore also notes an example from Oxshott with 

 confluent spots on the underside. Aigner-Abafi describes and figures 

 (A)in. Mus. Nat. 1 1 u>i<jarici, 1906, p. 515, pi. xiv., fig. 0) an aberration 

 with spots two to six of the submedian row united into a transverse 

 band on the forewings, whilst on the hindwings the spots of the same 

 row arc similarly united, will) the additional union of the costal spots 

 (=costajuncta), and similarly the basal spots ( = basijuncta) ; the 

 specimen is a ? , 21mm. in expanse, captured at Budapest in 1891. 

 It is such a poor specimen, however, that the junction of all these spoti 

 fails to produce a striking effect. Prideaux has an almost identical ? 

 captured at Berisal. Other forms characterised by united spots are 

 mentioned by Courvoisier (op. cit., p. 20) in his " forma' confluentes," 

 viz,, (1) The confluence of the first basal spot and the upper spot of 

 the submedian row on hindwii gs into an >— -like mark = ab. costajunct a, 

 n. ah. (2) The confluence of the penultimate spot of the submedian 



