( 448 ) 



both wini(s thinner. Forewing : orange patches in white discal band small 



or lOlisiilete, hence the white colour more extended anteriorly than in epijasius ; 

 orange jiostdiscal spots longer anteriorly than towards internal margin, posterior 

 ones transverse ; snhmarginal olive grey scaling sharply defined distally ; the 



admarginal orange patches smaller than above. Hindwing : median series of 



bars concave from C -R^ often almost straight, median bar M'— M- a little more 

 distal than in epijasius ; white discal band concave distally between C and R^, of 

 about even width, generally widest before R^, about 2| mm. broad at R' ; discal bar 

 R2 — R3 distinct as a rule, often well within white band, seldom absent ; postdisco- 

 snbmarginal area as in epijasius, width somewhat variable ; admarginal chrome 

 coloured band somewhat narrower than above, in some si)ecimens half as wide again 

 as in others, limited proximally by the submarginal bars, which are transverse, 

 the upjjer ones being, however, sometimes luniform, while the hist ones are 

 curving basad at ends towards the postdiscal bars ; upper tail 4 to 5 mm., second 

 8 to 9 mm. 



?. Paler than cJ, larger; median bar R^—M' of underside of hindwing often 

 present, j)ale blue spots of upperside of hindwing sometimes enlarged to patches 

 which nearly tonch each other ; tails longer; abdomen olive black beneath, segments 

 edged with white, this scaling often extended at each side to a streak. 



Length of forewing ; S , 37 — 42 mm. 

 „ „ ? , 40—47 mm. 



Clasper (PI. VIII. f. 29) with the dorsal edge in dorsal view almost straight, 

 suddenly curved before end, hook therefore strongly curved ; penis (PI. VIII. f. 11) 

 thick, curved before end, with one strong dorsal tooth at the bent and often one or 

 two smaller ones close behind ; penis-funnel moderately narrowed towards end, apex 

 rather flat, broad, apical edge turned down, triangular, pointed. 



Hab. Mediterranean countries, where the food-plant. Arbutus unedo, is 

 abundant, in two l)roods ; the old writers received it from Asia Minor, but there is 

 ajiparcntly no recent record of the species from there. The admarginal orange 

 respectively chrome coloured band of the upperside is apparently wider in specimens 

 from Greece than in individuals from the western parts of the Mediterranean 

 subregion. 



The egg, larva and pupa were discovered by Pruuner, a German, who was an 

 oflBcer in the Sardinian army, and were figured and described by Esjjer {i.e.). 

 Since then many accounts of the life history and the habits of Ch. jasius have 

 been published. The egg, larva and pupa agree in structure with those of other 

 Ckaraxes (see p. 282). The larva when quitting the egg is brownish green, but 

 soon becomes brilliant green, sometimes somewhat bluish. Tiiere is a yellowish 

 green, oval, dorsal jiatch on the third and fifth abdominal segments each, which 

 are bordered by a dark line, and in the full-grown caterpillar become more or less 

 blue centrally, or nearly all blue ; central horns green or yellow basally, red 

 apically, lateral horns red, externally yellow, with a stripe which extends to the 

 month and is j>osteriorly bordered black. When tlie caterpillar has cast its skin 

 the horns are first very short, but soon grow to normal size. The caterpillar lives 

 on the upperside of the leaf, where it spins a kind of web which enables it to fasten 

 itself on the leaf. Mr. Pearson gives, I.e., the following description of the early 

 stages of Ck. jasius : 



" I was fortunate enough in the course of last winter and spring, spent at 

 Mentone on the shores of the Mediterranean, to find the larva of this species in some 



