30 THE entomologist's record. 



a specially bright <? A. coridon : South speaks of a greenish-blue 

 example of thetis (Ent., xx., pp. 80-81) from Dover, but this is, one 

 supposes, as no special mention is made of its similarity to A. coruloii 

 in shape, merely a form of A. thetis (bellanjus) as South says. 

 Odd specimens of polonns, ZelL, however, appear to be picked 

 up occasionally here and there on the continent, wherever A. 

 thetis and A. corido)i occur together. Wheeler mentions [Ent. 

 liec, xxi., p. 250) the capture of five examples at Assisi in June-July 

 1909 ; Stefanelli records {Bull. Sue. Ent. Ital., xxxii., p. 339) 

 two very beautiful j s, one taken in the plain of Mugnone at the 

 end of July, the other on the hills to the east of Fiesole at the 

 beginning of August, of a colour between that of A. coridon and A. 

 thetis, and which he considers to be of hybrid origin. Favre notes 

 {llitt. Schw. Ent. iresell., xi., p. 4) under the name caucasica, the cap- 

 ture of a fine <y above the Chateau de la Batiaz, on the Kavoire side ; 

 Oberthiir records {Etudes, xx., p. 21), also under the name caucasica, 

 the capture of two examples in the Pyrenees, one from Vernet-les- 

 Bains (Pyrenees-Orientales), the other from Cauterets (Hautes- 

 Pyrenees); whilst Forbes {Ent. Mo. Mag., xv., p. 277) mentions the 

 capture, in 1878, of a ^ ^4. coridon, remarkable for the brightness of 

 its blue which resembles that of A. thetis, on the Bella Tola, at about 

 CSOOft. elevation ; Muschamp notes {in litt.) one taken at Digne, 

 and Rosa records what appears to be another as A. var. corydonius 

 {Ent., XXXV., p. 96), at Pfyn, in July 1900. Reverdin speaks 

 {in litt.) of one from Brides-les-Bains, July 19th, 1904, and 

 IBlachier mentioned another from the same place, July 1st, 1891, in 

 which he notices the fros-like coloration, and states that he has 

 seen, in the collections of friends, two other examples taken in 

 the Geneva district, one in the Bois des Freres, and the other 

 at the foot of the Saleve. The most recent doubt arises over 

 Preissecker's hafneri [Verh. z.-b. Ges. Wien, p. 68 (1908)] , which is 

 obviously polonus, Zell. He records examples (1) from Feistenberg, 

 taken June 19th, 1900, (2) another at Oberfeld near Wippach, June 28th, 

 1907, by himself. At the meeting of the Vienna Society, 

 March 6th, 1903, the first was referred to polonus, ZelL, but this did 

 not satisfy Preissecker, who forthwith redescribed it ; one suspects 

 Preissecker's dissatisfaction arose from the fact that he did not know the 

 true polonus, Zell., and was comparing the 1900 example with one of the 

 Asia Minor forms, conjdonius or caucasica, which are now generally but 

 erroneously doing duty under Zeller's name, whilst the Spanish hispana 

 are posing as cor?/(/am"»s, Anotherexampleof 7>oZo)i»s, Zell., in the British 

 Museum coll., came from " Shar Deresy, North Syria," so that it seems 

 possible for an odd example to appear wherever A. thetis and A. coridon 

 occur together. We have left calydonius, Lowe, out of consideration, 

 as Wheeler is in doubt whether it is to be referred here. So far, too, we 

 have only dealt with the ^ form, but, in working over our material 

 very closely, we found, among our coridon J s, an undoubted $ of 

 this form, captured at Neu Spondinig, August 12th, 1909, with 

 beautiful violet lunules edging the marginal spots of the hindwing. 

 It is quite distinct from any other example of either species 

 that we have ever seen, and its reference to polonus has been 

 immediate by every expert to whom it has been submitted. As bearing 

 on the possible hybrid origin of A. polonus, we would call attention to 



