VADE MECl/M. 1 19 



('aterpillur. 

 Chrysalis. 



POLYOMMATUS ALSUS, SMALL BLUE. 



Leu)in,pl. 39, /. 3, 4. Duncan, pi. 3},fy. 3. 



Butterfly, All the wings above, brown, with a few blue 

 scales at the base. Primary underneatb, ash-coloured, with 

 a lunulated discoidal spot cinctured with wliitisli, and from 

 six to seven posterior ocellated dots, also cinctured witli 

 white in a transverse band. Secondary underneath, with a 

 single discoidal streak nearer the costal margin, and about 

 eight ocellated black dots, two near the base, and six 

 forming a band near the posterior margin. Female smaller 

 and more obscure, otherwise like. 



Caterpillar. 



Chrysalis. 



Observation. This delicate little Butterfly is the smallest 

 of the British Polyommafi, and though pretty generally scat- 

 tered throughout the kingdom, is no where very abundant. 



POLYOMMATUS THESTYLIS. 



liullvrfly. Wings above, black with a deep blue disk, 

 anterior margin with a slender white edge ; underneath of a 

 pale drab or brown nsh-colour, terminating in a slender 

 black line at the edge, at the base somewhat glaucous or 

 blueish green ; fringe long and wliite, with shorter lirown 

 scales intermixed. Primary wings above, with a trans\ crse 

 discoidal black spot near the anterior margin, underueiith 

 with a discoidal wreath consisting of ten ocellated spots, 

 l)lack cinctured with white, of which the discoidal one is 



