266 EuKOPEAN Butterflies and Moths. 



22. P. Ain (Hlibn.). — Fore-wings varied with bluish-grey and blackish, with dark double 

 sliglitly-curved transverse hnes, and a wliite, slightly shining and slendcr-armed 7 before the 

 middle ; the subterminal line bidentate below the middle, and the hind-wings yellow, with 

 a broad black border. Expands about \\ inches. Inhabits the Alps, and the mountains of 

 Germany and Siberia, in July and August. [P. Diasana, Boisd., found in Lapland and 

 Greenland in August, is of the size of Ain, but more closely allied to Mict-ogramma ; the 

 fore-wings are dull grey, with the central area dark blackish-brown, and with silvery marks, as 

 in P. Interrogationis ; hind-wings smoky yellow, with a broad black border, and the base and 

 nervures washed with the same colour.) 



23. P. Microgainma (Hlibn,). — Fore^wings varied with brown and reddish-grey, with dark 

 double transver.se lines, which are not dentated, and a silvery y before the middle, the arms 

 of which are slender and wide apart ; the subterminal line moderately waved, and the hind- 

 wings yellow, with a black border. Expands about \\ inches. Inhabits Eastern Germany and 

 Russia in July. 



24. P. Hochmwarthi (Hochenw.), Divergens (Tr.). — Fore-wings reddish-grey, dark brown in 

 the lower half of the central area, with slender double transverse lines, and a silvery 7 before 

 the middle, the arms of which diverge only slightly; the subterminal line not zigzag; hind- 

 wings as in Microgami>icf. Expands from i to i^ inches. Inhabits the Alps, North Europe, 

 and Labrador in July, flying by day. The larva is reddish-brown, with yellowish lines on 

 the back and sides, and with indistinct waved lines between. It feeds on low plants till 

 June. The moth is figured at PI. 40, Fig. 4. 



25. P. Devergens (Hiibn.). — Allied to Hoclicnwarthi ; fore-wings varied with ashy-grey and 

 brov.Trish-grey, the silvery mark broader, the subterminal line strongly zigzag, bordered with dark 

 grey in front and pale grey behind. Inhabits the high mountains of Switzerland in July and 

 August. The larva is very dark violet, with pale grey longitudinal lines ; it is rather short, and 

 tapering in front. It hides itself under stones by day near the snow-fields, and probably feeds 

 on a variety of low plants. 



FAMILY XIII.— CALPID^. 

 Fore-wings broad, with the tips pojnted and projecting, and the hind margin strongly 

 curved outwards. There are two projections on the inner margin, one acutely projecting 

 just within the hinder angle, and the other, which is large and rounded, near the base ; 

 the A'oc/«rt-pattern is absent. The hind-wings a^e tiroad and slightly contracted below 

 the tips; the aqtennre are short, with long pectinations Jn the male, and short ones in 

 the female ; the palpi are large, with a dense velvety covering of hair, which is compressed 

 above, and expanded and flattened below ; the last joint is concealed by the hair. The 

 body is moderately slender, and the abdomen extends a little beyond the anal angle of 

 the hind-wings. The larvae arp naked, with sixteen legs, and undergo their transformations 

 in a silken cocooi). There is but qne European genus, Calpe, Boisd., and one European 

 species, C. Capucina, Esp. {Thalictri, Borkh.), which has rosy-grey fore-wings, slightly varied 

 with olive-green, and finely striated with pale grey. There are some oblique dark lines 

 before the middle, and an oblique rusty-yellow line bordered with pale behind, running from 

 the tip to the inner margin ; hind-wings yellowish-grey, darker towards the hind margin. 

 It inhabits Europe south of the Alps, and Northern and Western Asia, in June and July, 

 and was formerly taken at Magdeburg. The larva is yellowish-green, with three rows of 

 blackish spots above ; head yellow. It feeds on Thalictruiii flavitiii from autumn to May. 



