PSYCHE. 



209 



diversifieil, and the lubercles have 

 ahuost enthelv ihsappeared and lieen 

 replaced by simioth, shining lenticles, 

 while on the sides of the third thoracic 

 segment the black spot and black streak 

 have developed to a black annuUis with 

 a blue center. In the fourth stage the 

 general color becomes at first a dark 

 brownish olivaceous, with the same 

 striking contrasts as before, but during 

 the course of this stage this is replaced 

 by a grayish green, and the saddle, 

 which has been becoming yellow, fades 

 and diminishes until a mere ghost re- 

 mains; the first abdominal segment is 

 edged behind with yellow, the lenticles 

 have turned to colored spots, and on 

 the third thoracic segment is seen at 

 first a pair of roseate spots faintly 

 edged with black, and a black line 

 between them, afterwards becoming a 

 single yellow spot, including below a 

 luteous lenticle, above a velvety black 

 streak, and in the middle a black- 

 rimmed, tuiquoise spot. In the final 

 stage the caterpillar becomes pure 

 green above, pale bluish green below, 

 antl the only markings are a bright, 

 transverse stripe of black and yellow at 

 the hind edge of the first abdominal 

 segment, a few rows of minute dark 

 turquoise spots, and on the sides of the 

 third thoracic segment a still further 

 development of the markings, the whole 

 now forming a rounded, quadrangu- 

 lar, greenish yellow spot, rimmed del- 

 icately with black, crossed above by a 

 black bar, and enclosing below a black 

 annulus with a turquoise centre. 



In Euphoeades troilus (Fig. 4) \ve 



start in practically the same way as in 

 Jasoniades, only the saddle is less ob- 

 lique. In the second stage the cater- 

 pillar is plumbeous, with the lateral 

 flaps of the pale saddle more distinct 

 than the seat, the body paler below 

 than above, and there is added a curv- 

 ing white streak below the middle of 

 the sides of the thoracic segments, 

 seeming to define better the tumid front 

 portion of the body ; bluish dots appear 

 along the dorsal part of the segments, 

 and on the third thoracic segment one 

 at the side is velvety black, edged above 

 and below with yellow ; the tubercles 

 are only distinct at the extremities of 

 the body. The third stage hardly dif- 

 fers from the second, but the spot on 

 the third thoracic segment is now larger 

 and wholly rimmed with yellow. The 

 fourth stage also closely resembles the 

 preceding, but the tubercles are re- 

 placed by lenticles, one on the third 

 thoracic segment black and glistening, 

 and included in the black spot. The 

 last stage is wholly difterent, the gen- 

 eral color being a pure green, on which 

 only the minor spots remain as links to 

 the past, and reinforced by others which 

 replace the lenticles ; the spot of the 

 third thoracic segment has altered ; it 

 is now a finely black-rimmed, large, 

 orange and yellow spot, including a 

 quadrate black nucleus below the mid- 

 dle, nearly "half as large as the whole 

 spot, and including within it posteriorly 

 a shining black, blue-edged lenticle ; 

 a thin black line runs between this 

 nucleus and the outer black rim in 

 front ; but an additional spot appears 



