ADOP.EA LINEOLA. 95 



gische Bemerkuny) has given a complete comparative description of the 

 two butterflies" (Ochsenheimer, Die Schmett., i., pt. 2, p. 230). 



Imago. — Expanse 22mm. -28mm. All the four wings of an 

 orange-fulvous colour, without spots ; the outer margin distinctly 

 black-banded ; this and the outer edge of the nervures darker, and 

 more pronounced than in A. flava (thaumas) which it somewhat 

 resembles ; $ with fine black androconial mark on forewings ; fringes 

 pale ochreous. The antennas black-tipped. The underside greyish- 

 yellow, the hindwings particularly uniformly tinted and without 

 the bright patch at the anal angle that characterises A. flava. 



Sexual dimorphism. — The male is similar to the female, except 

 that it possesses a very slender black mark or androconial pocket in 

 which the black androconia or $ scent-scales are packed. This is 

 situated directly beneath and in contact with the median nervure, and 

 is not turned down at its basal end, as in A. flava. The females 

 appear to be distinctly paler in the ground colour than the males, to 

 have a cleaner dark marginal border, thus contrasting more strongly, and 

 are usually slightly larger and of heavier build. The $ androconial 

 mark varies somewhat, a small separate piece extending parallel to the 

 main dash at its lower point; this forms Staudinger's ab. semicolon. 

 The androconial scales are really " fine hairs, much shorter than those 

 of the other species, from 0* 1 3mm. -0* 18mm. long, and 0'0034mm. 

 broad ; the segments are less completely formed, so that the joints are 

 more rarely separated from one another. Keally fan-shaped scales do 

 not seem to occur" (Aurivillius). 



Comparison of Adop^a lineola and A. flava. — Upperside : 

 A. lineola is smaller than A. flava (thaumas), the $■ s with a much 

 finer, shorter, and altogether more indistinct, androconial streak that 

 does not turn down towards the inner margin of the wing at its 

 termination, but is sometimes interrupted there ; the black margins 

 broader, their inner edges gradually shading off into the ground 

 colour ; the neuration darker and the nervures more distinctly marked 

 than in A. flava. Underside: the tips of the antennas black beneath, 

 not fulvous or yellowish-red as in A. flava ; the hindwings uniformly 

 coloured, the inner margin not more brightly fulvous, as is the case in 

 A. flava. Boisduval (apparently at first quoting Ochsenheimer) adds 

 that the fringe of lineola is whiter, the upper wings rather w T ider and 

 more rounded at the extremity, the extremity of the nervures not only 

 blacker but slightly dilated ; the underside of the hindwings of the 

 $ whitish-yellow, of the $> greyish-white with the abdominal 

 margin " plus clair." 



Variation. — There is a fair amount of difference in the colour tint 

 of various specimens, some having distinctly more yellow in the ground- 

 colour. Our British examples otherwise exhibit but little variation. We 

 also possess some specimens with pale blotches in the wing, show- 

 ing local failure of pigment development, such aberrations being 

 undoubtedly pathological. In its various localities, however, on the 



* Ochsenheimer is quite correct in referring this species to Scriba as its first 

 describer. He calls it linea and gives a most careful comparison between it and 

 thaumas. His name linea, having already been used for thaumas (=Jiava), of 

 course falls. His description is as follows: — " P. P. Urbicola linea : Alis integer- 

 rimis fulvis immaculatis, lineola tenuiore nigra in alis superioribus maris, apice 

 antennarum nigro " (Journal, iii., p. 247). 



