ARICIA MEDON. 227 



of fulla and donzelii, and the somewhat brighter colouring of anteros 

 and hyacinthus, to the bright blue of isauriea. The Ariciid larva, again, 

 has its distinguishing character even in its earliest stage where such 

 differences are least to be expected. On this subject Chapman makes 

 the following observations : — 



In the first instar, the notable point, as compared with other 

 Plebeiid larvae, is the length of the dorsal hairs, which are a fourth 

 longer than those of Icarus, in particular the hairs representing iii 

 (which are so small as to be difficult to find in Agriades and very 

 small in Polyommatm, and usually clubbed or rounded), are here 

 definite hairs, the front one over 0*1 lmm. long (dorsal hairs 0*26mm.), 

 the posterior 003mm. or thereabouts, really very short, but pointed 

 and hairlike. The prothoracic plate, besides the usual two pairs of 

 hairs and pair of lenticles, has two small hairs in front, and the 

 special angular hairs well developed, being in these respects practically 

 identical with icarus (Chapman). 



The above observations are founded on the egg and larva of medon, 

 but the only other species of the genus which there has as yet been 

 any opportunity of examining minutely, the egg of idas and the first 

 instar of eiunedon, have been found by Chapman to be in agreement 

 with the distinctions here given. No special features have been found 

 in the Ariciid pupa as compared with other Plebeiids. 



Synonymy.— Species : Medon, Hiifn., "Bed. Mag.." ii., p. 78 (1766) ; (?) v. 

 Rott., "Naturf.," vi., p. 10 (1775); Esp., " Schmett. Eur.," i., pt. 2, p. 31, 

 pi. lv. (cont. v.), fig. 7 (1778) ; Schneid., " Sys. Beschr.," p. 247 (1785) ; Brkh., 

 " Sys. Beschr.," i., pp. 163, 279 (1788) ; ii., p. 230 (1789) ; De VilJ., " Car. Lin. 

 Ent. Fn. Suec," ii., p. 74 (1789) ; Schfnb., " Scriba's Journ.," iii., p. 217 (1791); 

 Brkh., " Rhein. Mag.," i., p. 291 (1793) ; Herbst., " Nat. Sys. Ins.," xi.. p. 217 

 pi. cccxiii., figs. 4-7 (1804) ; Meig., "Eur. Schmett.," ii., p. 27, pi. xlviii. figs. 4 a, 

 6 (1830) ; Staud., " Cat.," 1st ed., p. 5 (1861) ; Kirby, " Man.," p. 103 (1862) : 

 Led., " Wien. Ent. Monats.," vii., p. 17 (1863) ; Now., "Mot. Gal.," p. 41 (1865); 

 Rossi., "Schmett. Nass.," p. 15 (1866); Snell., " De Vlin.," L, p. 59 (1867); 

 Zell., " Ent. Mo. Mag.," iv., p. 73 (1867) ; Berce., " Fn. Fr.," i., p. 138 (1867) ; 

 Nolck., "Lep. Fn. Estl.," etc., p. 55 (1868); Tengs., "Cat. Lep. Fn. Fenn.," 

 p. 2 (1869); Stange, "Schmett. Halle," p. 3 (1869); Staud., " Hor. Soc. Ent. 

 Ross.," vii., p. 52 (1871) ; Newm., " Brit. Butts.," p. 123, fig. 41 (1871) ; Mill., 

 " Cat. Lep. Alp.-Mar.," p. 103 (1872); de Nicev., " Butts. Ind.," iii., p. 69 (1890); 

 Nich., "Ent. Rec," xiii., p. 209 (1901); Courv., " Ent. Zeits.," xxiv., p. 112 

 (1910). * Alexis, (?) Scop., "Ent. Carn." (var. 1), p. 179 (1763); (?) v. Rott., 

 " Naturf.," vi., p. 22 (1775) ; fLed., " Verh. zool.-bot. Gesells.," ii., p. 20 (1852); 

 Hein., " Schmett. Deutsch.," L, p. 82 (1859) ; Kirby, " Syn. Cat.," p. 363 (1871) ; 

 Scud., " Hist. Sketch," p. 150 (1875) ; ' Dale, " Hist. Brit. Butts.," p. 73 (1890) ; 

 Kirby, "Hndbk.," ii., p. 99, pi. xlviii., figs. 1, 2 (1896). Agestis, Schiff., 

 " Schmett. Wien.," 1st ed., p. 184 (1776) ; Goze, " Ent. Beitr.," iii., pt. 2, p. 74 

 (1780) ; Hiibn., " Eur. Schmett.," pi. lxii., figs. 303-306 (1799) ; 111. " Schmett. 

 Wien.," 2nded., ii., p. 270 (1801); Schrank, "Fn. Boica," ii., pt. 1, p. 214 

 (1801); Hffmsgg., "111. Mag.," hi., p. 184 (1803) ; Ochs., " Schmett. Sachs.," 

 p. 330 (1805); Hiibn., "Eur. Schmett.," text, p. 49 (1806); Ochs., "Die 

 Schmett.," L, pt. 2, p. 44 (1808) ; Dalm., " Handl. Sv. Vet. Akad.," p. 99 (1816); 

 Hiibn., " Verz.," p. 68 (1818); Godt., " Ency. Meth.," ix., p. 689 (1819; ; " Pap. 

 Fr.," i., p. 213, pi. xxxviii., fig. 80 c-f (1821) : Stphns., " Illus. Haust.," i., p. 94 

 (1823) ; "Ins. Cat ," ii., p. 25 (1829) ; Bsdv., "Eur. Lep. Ind.," p. 12 (1829) ; 



* See note on this name supra, p. 114. 



f Lederer attributes this name, as he persistently does all von Rottemburg's 

 names, to Hiifnagel. Von Rottemburg's article in the Naturforscher was 

 avowedly founded on Hiifnagel's Tabellen, but he gives many names not used by 

 the latter, of which Lederer seems not to have been aware. He appears to have 

 had no first-hand acquaintance with Hiifnagel's work. 



