the Life History of Agriades escheri. 42 1 



The width is 4*5 mm., and the height 4'0 mm. at 4th abdominal 

 segment. The form is the one usual in Agriades, but the waist is not 

 so marked as in most other species of Agriades and Polyommatus, etc. 



June 8th. — No. 1 emerged, ^. 



June 9fch. — No. 2 emerged, ^. 



June lOtli. — Nos. 3 and 4 emerged, ,^ ^. 

 And others at later dates. 



I reared altogether 7 (^ (^ and 4 $ $, they are of the var. 

 rondoui, i. e. the Pyrenean form in which the underside 

 spotting is pronounced to about the same degree as in 

 normal icarus, which they therefore resemble much more 

 than they do the heavily spotted and more typical form 

 found in Dauphine and the Southern Alps.* 



There is amongst them, however, no specimen of ab. 

 rondoui in Avhich the weakening of the spots is much more 

 pronounced. Of the males, several have very distinct 

 discal spots, and two or three have dark chevron marks 

 round the hind margins of the hindwing. The $ $ have the 

 orange marginal lunules very poorly developed, one having 

 three only, towards the inner margin of the hindwing. 



* Hiibner's figure shows a form intermediate between the 

 Dauphiny form and the var. rondoui. 



Explanation of Plates LXXXIII-CIII 



Plate LXXXIII. Fig. 1. Larva in 3rd (hibernating) instar, en- 

 larged about 7 diameters (Sept. 12, 

 1914). 



Fig. 2. Another specimen same date. 



Fig. 3. Another view of larva in fig. 2. 



Fig. 4. Another view of larva in fig. 1. 



Fig. 5. Larva in 4th instar, enlarged about 

 5 diameters (March 19, 1915). 



Fig. 6. Another specimen. 



Fig. 7. Another specimen (March 29, 1915). 



Fig. 8. Leaflets of Astragalus monspessulanus 

 eaten by first-stage larva x 6 or 7, 



