200 BRITISH BUTTERFLIES. 



" Common at Ongodai, and in the Tchuja* and Bashkaus valleys in 

 July, 1898. Some of the specimens from Ongodai are very dark on 

 the upperside, and might be considered as a small variety of cleobis, 

 Brem., which is found in the Kentei mountains and in Mongolia, and 

 of which I have specimens from Alpheraky, from Irkut, and from 

 Uliassutai, under the name of var. ida, Staud., agreeing fairly with 

 mine." 



p. var. micrargus, Bntl., "Cist. Entom.," ii., p. 283(1875-1882); Leech, " Butts, 

 of China," etc., ii., p. 301 (1893). — Above very like L. argia and L. aegon ; lilac, 

 with dentated blackish outer border, and snow-white fringes ; below with the 

 ground colour of L. pylaon (triton ?, Fab.); the markings exactly as in L. argus, 

 excepting that the submarginal black spots of the secondaries have no trace of 

 metallic colouring about them, and the orange belt connecting the two series of 

 black spots is paler. Expanse of wings 1 inch 1 line. [Tokio, Japan.] As is 

 the case with several of the Japanese moths, this species unites the characters of 

 several European forms (Butler). 



Butler's type is in the Brit. Mus. coll., labelled, " '78. 24 type." It is 

 a $ in poor condition, quite characteristic aegon in its appearance, with 

 moderately wide marginal border on forewings, and marginal spots only 

 on hindwings. Elwes has placed another just like it, and also in poor 

 condition, under the same name, the latter specimen labelled "Kisa- 

 gawa, Central Japan, 1-3. viii. '04 (H. J. Elwes)." There are also two 



<? s and one 2 placed here, labelled, " July llth-12th, 1904, Asahigawa, 

 Hokkaido (Elwes)," and one $ and two 2 s labelled "July 2nd, 1904, 

 Nikko (Elwes)." The difference in locality is considerable, and so is 

 the difference in the appearance of these specimens. The upperside of the 

 two $ s in the " Asahigawa " batch, is quite similar to the type-specimen 

 of micrargus, with rather well-defined, but not wide marginal border on 

 forewings, and marginal spots on hindwings. The "Nikko" $ is of 

 quite a different facies, the margins broader-bordered and darker ; the 



2 s also darker. This appears to us to be a "hill" form compared 

 with the "Asahigawa" examples. The undersides of all three $ s and 

 of the first-named 2 without, the other tw T o 2 s with only a trace of, 

 metallic scales on margin of hindwings. To us the "Nikko" examples 

 appear quite near pseudaegon. Butler's remarks on the resemblance of 

 micrargus to " L. pylaon, art/ia, and argus" and his statement that it 

 " unites the characters of several European forms," are quite naive. 



[Under this name elsewhere, and quite separate from Butler's type noted 

 above, are erroneously placed, in the Brit. Mus. coll., four $ s and three 



2 s labelled "Japan, Pryer coll.," and nine g s and three 2 s " Gensan, 

 Corea, June, 1886, Leech," of exceedingly large size, and hardly 

 separable from the Spanish form bejarensis. These are our coreana.] 



s. var. pseudaegon, Butl., " Proc. Zool. Soc. Lond., 1 ' p. 851 (1881); Leech, 

 " Butts of China," ii., p. 301 (1893).- Nearest to /.. aegon of Europe; the same 

 colours. . The d smaller, with a very narrow, black, outer border to the wings; 

 fringe narrower, submarginal black spots of secondaries rather smaller ; female 

 very faintly shot, with steel-blue at the base of primaries; submarginal orange 

 lunules obsolete; secondaries darker, purplisb towards the base, bluish at the base; 

 tbe whole of the black submarginal spots bounded internally by orange lunules, 

 and externally by white ones. fJndersurface greyer than in /.. aegon, both sexes 

 washed with pale greenish-blue at the base; black spots smaller, but arranged 

 exactly in the same way; submarginal orange spots of the primaries of the <? 

 extremely pale ; those of the secondaries destitute of metallic spots in both sexes. 



* The Tchuja valley examples (from Elwes) in the Brit. Mus. coll., are 

 P. argyrognomon. 





