P/riBALAPTEKYX. 365 



distributed in Europe and Northern and Western Asia in spring and autumn, but local. The 

 larva is reddish-brown, with dark lines on the back and sides, the latter bordered with pale 

 yellow beneath ; head flat. It is slender and twig-like, and feeds on Vaccinittui Oxycoccus in 

 June and autumn. 



GENUS XII. — PIIIBALAPTERYX (STEPII.). 



Moderately stout, fore-wings with the costa rather long, and the tip divided by a dark 

 dash ; all the wings coloured and marked nearly alike, and intersected by dark transverse 

 lines, which are seldom dentated ; two dark divided bands on the central area, and the sub- 

 terminal line generally lighter ; the hind margin rounded or slightly waved. The larvae are 

 without prominences. 



* I. P. Fluviata (Hiibn.), Genimata (Hiibn.). — The male is ochrc-ycllow, and the female 

 reddish-grey, with dark wavy transverse lines, a white undulating line beyond the middle, bordered 

 with dusky, and a white dentated subterminal line ; the basal half of the fore-wings suffused 

 with reddish-grey, and bordered behind by a narrow darker band, on which stands the small 

 black central dot ; the tip of the fore-wings is divided by a dark shade. E.xpands from \ to 

 I inch. Widely distributed in Southern and Western Europe, and Western Asia, occurring 

 almost throughout the year. The larva is very variable in colour : greenish, yellowish-brown, 

 brown, or nearly black, with indistinct lines. It feeds on various low plants. 



*2. P. Vittata (Borkh.), Lignaria (Hiibn.). — Pale ochrcous, with paler and darker brown 

 transverse lines, of which three or four before the subterminal line are more clearly defined, 

 and with well-marked black marginal dots ; fore-wings with a grey transverse band, 

 broader above, on which the black central dot stands, and the tip divided by a dark grey 

 shade. Expands about i inch. It is found in damp places in Northern and Central Europe 

 from May to August ; and the larva feeds on Galium. 



*3. P. Lapidata (Hiibn.). — Wings reddish-ochreous, dusted with brown ; fore-wings 

 with the tip slightly divided with brown, a slender marginal line, and rusty-brown transverse 

 lines, those nearest the base curved ; a double line in the middle, strongly arched, and two 

 double lines beyond, slightly curved ; hind-wings marked with brown lines beyond the middle. 

 Expands from i to i^ inches. Inhabits Northern and Western Europe, and Northern Asia, 

 from September to December, but always scarce and local. The larva feeds on evergreen 

 oak in the south of France. 



*4. P. Polygrammata (Borkh.). — Wings pale ochreous, with many brown and nearly straight 

 transverse lines; hind margin grey, with the subterminal line whitish and scarcely dentated, 

 and a fine dark marginal line ; fore-wings marked with a brown transverse band before the 

 middle, running from the inner margin to the black central dot, the tip divided by a pale 

 dash, and the two lines beyond the middle often filled up with darker before the costa. 

 The variety Conjnitctaria (Led.) is paler, with the brown transverse band absent. E.xpands from 

 \ to I inch. Inhabits Central and Southern Europe from April to August, but not generally 

 common. The larva is reddish-grey, with a darker line on the back, and a blackish line 

 on the sides. It feeds on bedstraw from June to September. 



5. P. Corticata (Freyer). — Yellowish-grey, with many brown transverse lines, and a fine black 

 marginal line, the fore-wings with the tip divided with black, and two more distinct double lines 

 becoming suffused before the costa, one running obliquely from the middle of the inner margin, 

 and the other nearer the base. These lines are thicker and blacker on the opposite sides, and 



