unrecognised European Lycaena. 675 



but a short way up the Val d'Herens * be, as perhaps 

 they should be, credited to the Rhone Valley. Prof. 

 Poulton's series presents it at Visp on July 21 and 22 ; 

 Visp to Stalden, July 22 ; Brieg, Simploa Road, July 24 ; 

 on the north slopes opposite "Visp, July 25 — all 1898. 

 The dates probably mark an itinerary rather than dates 

 of appearance. 



By way of bibliography and synonymy there are, no 

 doubt, many references to this species under the name 

 of icarinus; but it is hopeless to try to unravel these, 

 except that quite recent one by Tutt with which I have 

 already dealt. 



Theesites (Boisd. MSS.), Cantener, Papillons diurnes 

 (1834), p. 35, pi. XI, figs. 1 and 2. 

 Alexius, Frr. Neu. Beit., vii, p. 133, pi. 676, figs. 1 



and 2 (1858). 

 Alexis, var. Herrich-Schaeffer, Schm. Eur., fig. 246 



(1848). 

 Icarus ab. icarimis, pars, Auct. & Tutt, Brit. Butt., iv, 



p. 158. 

 Var. ^roym, Chpm., E. M. M., xlviii, p. 159 and pi. VII, 



VIII, IX. 

 Var. centra, Chpm., a large form (36-38 mm.) occurring 



in the Tarentaise and surrounding districts. 

 Var. orientalis, Chpm., an Asiatic form of about size of 

 type and of paler coloration. 

 The Persian specimens in the Hope collection are 



much closer to var. gravesi. 

 ab. hybriclata, Gn. (MSS.). 



I have not satisfied myself that other references really 

 belong to our butterfly, e. g. Meigen's thersites, pi. XXVIII, 

 fig. 2. a and c may be icarus, the underside, 25, which 

 is more definite, is almost certainly that of medon. 

 Gerhard is equally indefinite. 



Explanation of Plate LXXXI. 



Underside of 1. thersites, 2. icarus, to sbow the approximation 

 of apical spot of hind wing (marked 1) to first post-discal spot 



* Between Vex and Euseigne (3150 ft.), counting elevation as 

 latitude, this is perhaps the most northern habitat of the species. 

 TEANS. ENT. SOC. LOND. 1912. — PART IV. (FEB.) ZZ 



