PLEBEIN2E. 
21 
Plebeius optilete, Papilio optilete, Knoch, Beitr. Ins. i. p. 76, pi. 5, figs. 5, 6 (1781). Central 
Japan, Europe, Siberia, Amurland, Trans-Baikal. 
Plebeius cleobis, Lycsena cleobis, Bremer, Butt. Acad. Petr. iii. p. 472 (1861). Habitat, Central 
Japan, Corea, Amurland, Bureja Mountains. 
Plebeius pheretes, Papilio pheretes, Hiibner, Eur. Schmett. i. p. 45 (1865). Habitat, WAstern China, 
Europe, Turkestan, Amurland, Lapland. 
Plebeius micrargus, Lycsena micrargus, Butler, Cist. Ent. ii. p. 283 (1873). Habitat, Tokio, Japan. 
Phebeius chinensis, Lycsena chinensis, Murray, Trans. Ent. Soc. 18/ 4, p. 523, pi. 10, fig. 5 ; Synonym , 
Lycsena mandschurica, Staudinger, Rom. sur Lep. vi. p. 160 (1892). Habitat, N. China. 
Plebeius bracteata , Lycsena bracteata, Butler, Proc. Zool. Soc. 1880, p. 407, pi. 39, fig. 4, 
Habitat, Kandahar. 
Plebeius pseudegon, Lycsena pseudegon, Butler, Proc. Zool. Soc. 1881, p. 851. Habitat, Yesso Island, 
Japan. 
Plebeius iburiensis, Lycsena iburiensis, Butler, l.c. p. 852. Waterhouse, Aid, pi. 108 (1882). Habitat, 
Yesso Island, Japan. 
Genus POLYOMMATUS. 
Polyommatus, Latreille, Hist. Hat. Crust. Ins. xiy. p. 116(1805); id. Ene. Meth. ix. p. 11 (1819). 
Tutt, Brit. Butt. i. p. 313 (1906). 
Lyceena, de Hiceville (part), Butt, of India, iii. p. 66 (1890). Bingham, Fauna of Brit. India, 
Butt. ii. p. 334 (1907). 
Eirsutina , Tutt, Brit. Lep. x. p. 154 (1908). Type, damon , Schiff. 
Agriades, Tutt, l.c. p. 155. Type, coridon , Scop. 
Eyes hairy, coloration, structure and venation much as in Lycsena and Plebeius ; 
differs from Plebeius in the genitalia, in having a less heavy base to the clasp, a less 
slender upper portion, and its curvature is simple-; the hard process of the clasp is 
rather shorter than in Agriades ; in both there is a soft process between the two 
divisions of the clasp (it often swells out in preparation in a balloon-like w T ay) ; 
whether we regard it as a part of the soft process of the clasp, or a development of the 
membrane between the two processes does not much matter, but its considerable 
development (it occurs elsewhere) is characteristic of these two genera. The hairy eyes 
of the species of this genus makes it a link between the Plebeince and LampMince, 
Type, Icarus, Eottenburg. 
POLYOMMATUS SARTOIDES, nov. 
Plate 645, figs. 1, $, la, % , lb, <£. 
Lycsena sarta, Bingham (nec Alpheraky), Fauna of Brit. India, Butt. ii. p. 345 (1907). 
Imago.— Male. Upperside purple-blue, with some darker blue scaling at the base. 
Forewing with the costal line finely black, terminal line black, with indications of 
suffused sub-terminal blackish spots. Hindwing with the costa broadly suffused with 
