AMORPHA POPULI. 465 



upperside ot the second and third lemora, there is a thick broad brush of hair; all 

 the legs on the left side without such brush. <J palpus broader and longer than 

 in the ? . The <? pair of wings much darker, grey, with sharper central 

 band and outer-marginal marking, also of a darker brownish-red at the 

 anal angle of the hindwings. ? pair of wings reddish-brown, longer 



than the right pair. Right half of thorax more swollen, more massive. 

 Divisional line recognisable neither on thorax nor abdomen ; the latter in form, 

 down and coloration normally ? . Genitalia feebly developed although entirely of 

 ? structure. Captured July 3rd, 1892 (Schultz, Illus. Zeits. fur Ent., iii., p. 135). 



j3". Halved. Left side S , right ? . Left pair of wings # , with richly- 

 contrasting darker markings ; left fore wing 2\cva. long. Right pair of wings ? , 

 with paler, slighter markings ; right forewing 3cm. long. Left antenna d , right 

 ? . Thorax on the left more strongly hairy than on the right. The genitalia were, 

 in the living insect, clearly developed in exact halves, and became indistinct 

 owing to the subsequent desiccation. The darker coloration of the left side shows 

 itself on the upperside of the body as well as on the down of the limbs. Bred by 

 Koch {in litt.) {Ent. Zeitschrift Guben, xi., p. 56). 



y". Right side <? , left ? . Perfectly divided. Divisional line very clearly 

 perceptible on the upper- and undersides. $ pair of wings slaty-grey, the 

 distinctly larger ? pait reddish-brown in colour. Form of the wings of each half 

 different. Right side : eye and palpus larger, thorax more voluminous, legs with brushes 

 of hair, and antenna purely $ . Left side : legs longer, without brushes ; antenna 

 shorter, quite ? . Ihe last abdominal segment, except a spot situated on the 

 left side, of $ coloration. Genitalia entirely $ , on the left somewhat smaller 

 and crippled. Captured in 1887 in Silesia. Frings coll. {in litt.) (Schultz, Illus. 

 Zeits. fur Ent., iii., p. 135). 



0". Halved. Left side $ , right side ?. Wing-markings of the left 3 side 

 sharper, the coloration also brighter, more violet. Right pair of wings less 

 conspicuous, more brownish. Margin of the right forewing more sharply indented 

 and considerably more oblique. Basal spot on the right ? hindwing smaller, and 

 almost imperceptibly paler. Left antenna <? in form, right antenna $ . Left 

 palpus large, clothed with long dark hairs, the right smaller, with shorter paler 

 hairs. On the abdomen a narrow longitudinal ridge, which divides the sexes 

 according to the coloration (left brownish, right more grey-brown). Towards the 

 end of the abdomen this ridge verges round to the right. On the abdomen the 

 anal tuft of the <? , even if somewhat curtailed, is distinctly perceptible ; on the 

 right side it disappears entirely. Bred by Herr Lehrer Denke in Crefeld in the 

 spring of 1895 (Rothke, Jahresbericht des Vereins fur naturw. Sammelwesen zu 

 Crefeld, 1895 to 1896, p. 14). 



t". Halved. Leftside ?, right c? • Right pair of wings very sharply marked, 

 with dark prominent central band and waved line, bluish-grey (as also is the right 

 patagia). All the rest coloured reddish-brown, and more weakly marked. Underside 

 in agreement with the upperside. Left antenna ? , right S . Abdomen stout and 

 long, towards the anal end of J form. Coloration of the body up to the last 

 segment red-brown; terminal segment, together with the down of the anus and the 

 longer right side of the anal tuft, on the contrary, coloured bluish-grey. Great 

 difference in wing expanse; left side 38mm., right 35mm. Bred in Saxony. Wiskott 

 coll. (Wiskott, Iris, 1897, p. 381). 



£". Halved. Left side s , right ? . The left S side bluish-grey, with 

 sharply- marked band, the right ? side red-brown. Similar distinction in colour 

 from the head to the end of the body marked out by a woolly ridge along the centre 

 of the body. On the underside the left hindwing also from the base to the costa 

 within veins 2 — 6 of $ red-brown coloration. Abdomen in structure ? , though 

 on the left more slender, less rounded, with the extremity bent round to the left. 

 On the underside the division between the two colours on the abdomen much more 

 striking than on the upperside, the whitish-grey and dark reddish-brown sharply 

 bounded. This boundary-line keeps the centre till shortly before the anal point ; 

 there the brown ? coloration verges over towards the right, while the point is 

 covered with g whitish-grey hair. Left legs grey, right brown. Left antenna 

 c? , right ?. Expanse of wing : left 37mm., right 39mm. Bred in 1897 at Berlin. 

 Wiskott coll. {loc. cit.). 



il". Strictly halved. Left side ? , right $ . Right pair of wings smaller than 

 the left. Right forewing with strongly expressed markings, of reddish-brown 

 coloration, the latter especially prominent on the disc of the wing and on the outer 

 margin. Left forewing with washed-out markings of a grey-brown colour ; 

 the disc of the wing, owing to want of colour and demarcation, scarcely 



2 F 



