PTEROPHORUS TEPHRADACTYLUS. 369 



The ground colour is grass-green, the head pale 

 yellow ; there is an interrupted grey line along each 

 side of the dorsal ridge, and a faint indication of a 

 similarly coloured subdorsal line; the tubercles are 

 greyish-white, as are also the hairs; the segmental 

 divisions are yellowish. The ventral surface is uni- 

 formly grass-green. 



The pupa is attached by the anal segment to a stem 

 or leaf of the food -plant, and although there is no 

 silken belt its position is not suspended, but flat along 

 the stalk or leaf to which it may be attached. It is 

 barely half an inch long, compact, and of moderate 

 bulk ; there is a distinct depression extendiug through 

 the centre of the dorsal surface from the head to the 

 anal segment; and the abdominal divisions, the eye- 

 and leg-cases are well defined. The ground colour is 

 dingy dull-green ; the sides are thickly freckled with 

 smoke-colour ; there is also a smoky stripe through 

 the wing-cases ; the hairs are grey. 



The imagos emerged early in June. (George T. 

 Porritt; Entom., November, 1881, XIV, 260.) 



Pterophorus osteodactylus. 



Plate OLXIV, fig. 4. 



The larva is in ground colour whity-brown, with a 

 greenish tinge, and thickly sprinkled with minute 

 black dots ; the dorsal stripe and subdorsal line are 

 pale rosy pink ; the tubercles are inconspicuous, 

 hardly raised above the surface of the skin, two on 

 each segment along the dorsal area, from each of 

 which a single brownish hair of moderate length is 

 emitted; these hairs on the third, fourth and fifth 

 segments, curve forwards, those on the posterior 

 segment curve backwards ; along the lateral area 

 there is one wart with a moderately long hair on each 

 segment; the spiracles are black; the prolegs are 

 pale brown. October. 



In seed-heads of Solidago virgaurea. The larvae 

 vol. ix. 24 



