mencta. 

 caerulescens. 



hromus. 



guttatus. 



pellucida. 



jansonis. 



cahira. 



austeni. 



zelleri. 

 bevani. 



350 HALPE. By P. Mabille. 



side of the hindwing. These characters, taken from a fine pair from China, have induced us 

 to treat the present insect as a distinct species, since it differs from all the forms of mathias. 

 P. mencia Leech (88 g). From the Himalayas to Central China. 



5. Hindwing beneath with a subterminal row of small, glossy blue spots from 1 b to t>. P. cae- 

 rulescens Mah. (88 g). West China, abundant in June and July, up to 6000 ft. 



Without blue spots 6. 



6. Hindwing beneath with a small white dot towards the centre of cellule '2. In cellule 1 a of 

 the forewing 2 hght spots, of which one placed near vein 2 is a mere dot. P. brotnus Leech 

 (89 h). China. 



Hindwing with transparent white dots on both surfaces 7. 



Hindwing without wdiite dots or with only 2 small obsolescent dots which are hardly 

 visible 9. 



7. The white dots of the hindwing in a straight line, which becomes obsolete towards the apex. 

 P. guttatus Brem. (= fortunei Fldr.) (88 g, h). China, in June and July, and Japan, here 

 again in the autumn; also in Kashmir and at the Amur, and in distinct forms also in the 

 Malay Archipelago. 



The white or yellowish dots not in a straight line 8. 



8. Hindwing beneath greenish ochreous; transparent dot of cellule 2 the same as the spot in 

 cellule 4. P. pellucida Murr. (88 a). At the Amur and Ussuri, in Central China and Japan. 



9. Hindwing beneath with a large white dot in the cell; near pellucida. P. jansotiis BtJr. (89 h). 

 Japan. 



Hindwing without such a spot 10. 



10. Expanse 46 mm. Forewing above with a whitish spot towards the middle of vein 1 a, 

 beneath with a diffuse whitish spot in the same place. P. cahira Moore. India and China, 

 but more in the south. 



Expanse 37 — 41 mm. Costal and apical areas of the forewing beneath of the same colour 

 as the disc of the hindwing, namely reddish brown. Cell of forewing with 2 white dots. 

 P. austeni Moore. West China, in July, not rare. 



Of lesser size; 25 — 27 mm 11. 



11. Hindwing beneath with a postmedian row of 4 — i> small white spots which are placed in a 

 diffuse blackish area. P. zelleri Led. (89 f). Syria, North Africa. 



Dots not surrounded with blackish or altogether absent 12. 



12. Forewing beneath with a light dot in cellule 6. P. bevani Moore (89 e). Northside of the 

 Himalayas; also in India and the Malay Archipelago. 



hiviitn. 



sub- 

 vtaculata. 



subflava. 



40. Genus: Halpe Moore. 



Club of the antenna elongate, with a short curved tip. Palpi porrect. Hindwing wdth vein 5 

 obsolete; vein 7 curved at its base and so strongly bent back that it touches the discoidal cell. Stigma 

 straight and thick, extending from the point of origin of vein 3 to vein 1, terminating at this vein or 

 reaching even beyond it. All authors appear to ascribe no stigma to most of the species of this genus. 

 But the contrary is the case, as we have been able to ascertain in 14 species examined by us. We have 

 found only a single species, astigmata, in which the stigma is absent. 



1. Hindwing beneath with several glossy silver-streaks or stripes. H. bivitta Ohertli. (H9 e). West 

 China; May until Jul}', not rare; also in Yunnan. 



Hindwing without silver-markings 2. 



2. Hindwing beneath with 3 transparent spots. H. submaculata Leecit (89 e). Central China, 

 June, July. 



Hindwing without transparent spots 3. 



3. Hindwing beneath shiny yellow with a small black dot each in cellules 2, 3. 7. and a white 

 streak on 1 b. H. subflava Leech (89 e). West China, in July. 



Hindwing beneath without these markings . . . v 4. 



4. Hindwing beneath without light median band 6. 



Hindwing beneath with a band of white or yellowish white spots 5. 



