MIMAS TILlM. 405 



Another obsoletely banded one is noted from Hammersmith (Ent., 

 xxxii., p. 284) by Betteridge, and Nicholson records another (Ent. 

 Rec, iv., p. 257). Clark figures and describes {Ent. Rec, i., pi. A., fig. 

 2) an asymmetrical form (ab. semiobsoleta) as follows : "The left anterior 

 wing is identical with ab. obsoleta, as also is the right hand, 

 except that small central and inner marginal blotches remain as 

 traces of the original band. The ground colour of the hindwings 

 is much like that of the forewings, the dark band also ill-developed." 

 Rothschild figures (Ent., xxvii., p. 50) an aberration, of the form obsoleta 

 on the left side and centripuncta (ill-developed) on the right side ; 

 bred June, 1893, from a Tring larva. It is a $ 2'35 in. in expanse; 

 the basal part of forewings pinkish-grey, the apical portion dark 

 green ;. the apical marking of normal shape and colour ; the hind- 

 wings almost entirely black, very faintly tinged with buff on the 

 nervules. Bate notes a specimen having the right forewing without 

 the usual dark central blotch and with the whitish apical mark 

 larger and more distinct than that on the left forewing, which was 

 normal. James notes an olive-coloured aberration at Crouch End, 

 with central spots missing on one forewing (ab. virescens-obsoleta ) 

 and reduced to a point on the other. 



f3. ab. centripuncta, Clark, "Ent. Rec," i., p. 329, pi. A., fig. 7 

 (1891); Ckll., "Ent.Rec," ii., p. 16 (1891); Frohk., "Ent. Rec," iii., p. 312 

 ([892). Ulmiy Bartel, " Die Palseark. Gross-Schmett.," ii., p. 149 (1900) ; Staud., 

 "Cat.," 3rd ed., p. 100 (1901). Tiliae ab., Fletch., "Ent. Rec," xiii., p. 254 

 (1901) ; Colthrup, '* Ent. Rec," xiii., p. 297 (1901). — Anterior wings, with the whole 

 of the central and basal areas deep reddish ; the outer area normal, greenish-olive ; 

 one small central spot is the only trace _of the transverse band ; the hindwings 

 yellowish, with the band rather ill - developed (Clark). Atjstro-Hungary : 

 Hungary — Epiries (Husz). Belgium : Huy {teste Bartel). France : Haute- 

 Garonne, rather the commoner form (Caradja), Aix-les-Bains, singly {teste 

 Bartel) ; Douai (Foucart), dept. du Nord, rare with type (Paux). Germany: 

 Very rare with the type ; Saxony- Altenburg — Roda, Carlsruhe {teste Bartel), 

 Prussia, singly (Grentzenberg). Spain: Bilbao (Seeboldj. 



Staudinger diagnoses this aberration (Cat., 3rd ed., p. 100) as : " Al. 

 ant. macula unica, non fasciatis." Bartel describes it ( ' Palaeark. Gross- 

 Schmett., ii., p. 149) as : " $ and 2 . The dark central band crossing 

 the upper side of the forewings, which, in the type, consists of two spots 

 more or less connected, is represented in ab. idmi only as a small dark 

 spot, at some distance from the costa and more or less towards the centre, 

 of the wing. The aberration varies in colour as does the type, and 

 is found in the same localities, but is generally rare." Fletcher bred, 

 from a Streatham larva, on May 22nd, 1901, an example in which 

 the ground-colour of the forewings is rather lighter than usual, and 

 the fascia absent, except a small dark green spot in the centre 

 of the wing just anterior to the junction of the upper and median 

 nervules. Colthrup notes one bred on May 18th, 1901, very similar 

 to Clark's fig. 7, but the ground-colour of a darker brown, and 

 the markings near the tip of the forewing of an intense green. 

 Hampson records an example in the British Museum collection in which 

 the right forewing has the median band reduced to a dentate spot 

 at lower angle of cell. Imms notes another from Northampton, 

 with the central band reduced to a small spot. Newman bred one 

 from a Bexley larva in 1899. Adamson (Ent., xv., p. 161) captured, 

 June 8th, 1882, a fine centripuncta, with* a large dark green pear- 

 shaped spot in centre of wing. 



