(and heterogoneulic) dimorpltism in Acjriades ther sites. 313 



but at any rate are very decidedly so in collections and 

 especially amongst my material. 



The figures of the androconia of A. ther sites, A. escheri 

 and P. icarus on Plates LXXXII, etc., in the Transactions 

 for 1912 may be referred to. 



Explanation of Plate LIV. 



Androconia of A. ther sites X 500. 



Fig. 1. First (spring emergence) brood from a Digne specimen. 

 „ 2. and 3. Single -brooded specimens; 2 from Lautaret, 



3 from Belgium. 

 ,, 4. Bred 1914. These are either " first " brood or single- 

 brood specimens. 



These four figures present a close resemblance to escheri (see 

 Trans. Ent. Soc. 1912, PI. LXXXV, fig. 1). It may be noted that 

 Fig. 2 from Lautaret happens to have been selected as a rather 

 narrow specimen; it has, however, five (and part of a sixth) rows of 

 dots, others on the same specimen would compare closely with 

 Figs. 1 or 4. These four figures are to be compared with Fig. 5, 

 examples from Bourg d'Oisans (1913), or similar specimens figured 

 Trans. Ent. Soc. 1912, PI. LXXXII and LXXXIII upper figures, 

 showing the form of the androconia of A. ther sites in the second 

 brood. 



