the Life History of Agricules thersites. 289 



of his captures at Port Baklar, near the Dardanelles, in 

 1878 (Ent. Mo. Mag., vol. xv. pp. 193-6). 



Mr. Rowland-Brown tells me he finds in his collection 

 specimens of thersites from Aosta (May), Como (June), 

 Constantinople, Damascus, Beirut, Mende (Lozere), the 

 latter a locality more westerly than any previously recorded, 

 though exceeded in this respect by Mr. Moore's Poitiers 

 specimens. 



Mr. Roger Verity says he has series of A. thersites collected 

 near Florence and Leghorn. "It is particularly abundant 

 in May, becoming very scarce in other seasons of the year. 

 In fact, I had considered it a seasonal dimorphism of icarus, 

 which occurred also at other times of the year when single 

 individuals developed in particular conditions." 

 I find I have a specimen ($) taken at St. Maxime. 

 Mr. H. Brown, writing on 24th Nov. 1913, says that in 

 his collecting thersites is commoner in the South than 

 icarus. As one goes North, thersites becomes rare in pro- 

 portion as icarus becomes more abundant. At Fontainebleau 

 and Lardy, which are, though very near Paris, altogether 

 Southern localities (one finds there Ascalaphus, Mantis, 

 Cicada), thersites is almost as abundant as icarus. 



Mr. Harry Moore has some examples of Agriades thersites 

 from Poitiers. These are to be noted as from the most 

 Western habitat yet reported. They are also remarkable 

 as occurring along with icarus, and, as happens elsewhere in 

 the two species, resembling each other very closely in all 

 respects. In one point, not they really, but the accom- 

 panying icarus are remarkable in having, in a majority 

 of specimens, the apical orange spot of the hind-wing 

 advanced basally nearly as in thersites. On the other hand, 

 the twin spots, of the post-discal series, at the anal angle 

 are markedly upright in the thersites, typically oblique in 

 the icarus. 



Dr. Anton Schmidt sends me specimens from the neigh- 

 bourhood of Buda-Pest of thersites and icarus taken to- 

 gether. On the upper sides the males seem to be identical ; 

 the expanse is from 30-34 mm. Two females, one of each 

 species, are practically identical on the upper side. Another 

 9 of thersites is rather small, only 28 mm., and has all the 

 appearance of a male medon with somewhat reduced orange 

 spots. The only difference I can see, is the slight and 

 perhaps doubtful one, that the faint black centres to the 

 orange spots of the hind-wing are near the margin as in 



