112 BRITISH RUTTERFI.IES 



Mr. Haworth's specimen is supposed to have been taken in Kent. Mr. Stephens gives his specimen as a 

 variety, describing it thus : — -" Cohiur of the ujiper surface rather more intense ; the inferior ocellated, nearly as 

 in Alexis ; but destitute of a fulvous, marginal fascia, in lieu of which it lias a series of ocelli, with minute black 

 irides, cinctured with white, faintly tinted with yellowish towards the inner side. This variety is probably 

 synonymous with P. Labienus, of the first edition of the Butterfly Collector''s Vade Mecum, unless var. y of the 

 preceding insect I^Ale.xis] be the kind intended." The description which I have given of Mr. Kirby^s original 

 specimen of P. Labienus, in p. 108, will at once show that that supposed species has no connexion with the true 

 Eros. Mr. Stephens' specimen was taken in July 1820, in a gi'assy lane, near Ripley, Surrey. 



SPECIES 11.— POLYOMMATUS DORYLAS. THE AZURINE BLUE BUTTERFLY. 



Plate sxxv. tig. 3 — 5, 



Synonymes. — Papifio Dorijlas, Fahriciiis, Wien. Verz., Iliibner 

 Pap. pi. 67, fig. 289— 2f)l. 



Lyctsna Dorylas^ Oeiisenheimer. 



PolyommaUis Dorylas? Stephens 111. Haust. I, p. 90. Wood, 

 Ind. Eiit. tab. 2, fig. G7. 



Argus Dori/ias, Boisriuval, Iron. Hist. Lcp. pi. 14, fig. 1 — 3. 

 Papilio Hi/fas, Esper. Sclimetteil. pi. 45, Suppl. 21. 

 Papifio Thetis^ Esper (female), pi. 55, cent. 5, fig. 1. 

 PapUio Go/gus, Hiibner, Euiop. Sclimett. (variety.) 

 L'azure, Ernst. Papil. il'Europe, pi. 83, Suppl. 2, pi. 4, fig. 82. 



Tlie expansion (if the wings of this doubtful British species is rather more than an inch and a quarter. The 

 upper surface of the wings of the male is of a bright azurine blue, nearly like Adonis, with the fringe and the 

 anterior margin white ; the fringe is preceded by a slender black margin, which extends a little along the veins of 

 the wings, especially in the anterior pair. The under side is of an ashy-grey colour, slightly shaded with blue at 

 the base ; the discoidal cell of the fore wings is not marked with an ocellus in the centre, but is terminated by a 

 curved, black spot, margined with white ; beyond this is an irregular, curved row of six ocellated, black spots, 

 succeeded by a row of fulvous, arched spots, forming the inner edge of the pale margin of the wings. The under 

 surface of tlic hind wings is marked with two, three, or four ocelli at the base ; the extremity of the discoidal 

 cell is occupied by a white spot, destitute of any black marks, and is succeeded by a curved row of ocelli, the 

 middle ones of which are placed near or upon a patch of white ; the extremity of the wings being marked with 

 a row of fulvous crescents, preceded by black arches, and marked on the outside with black spots. The tinder side 

 of the breast and the feet are of a bluish colour, and of the abdomen white. The upper side of the latter and of 

 the thorax is blue ; the antenna} are ringed with white. 



The upiier side of the female is of a uniform brown colour, with a marginal row of fulvous spots, sometimes 

 on the hind wings alone, but occasionally on all the wings. The under side is of a reddish grey, not sattirated 

 with blue at the base, with similar spots to the male, except that the fulvous markings are brighter. 



This species ditt'ers from P. Adonis in the fringe being unspotted ; the fore wings beneath have not the basal 

 ocellus, and the hind wings have the white spot at the extremity of t1ie discoidal cell unspotted with black. 



Boisduval gives the Alps, Pyrenees, and some parts of Hungary and Germany, as the habitats of this species. 

 Ochsenheimer gives Low in's plate 38, figs. 1 and 2, as identical with this species ; but Mr. Stephens regards 

 them as representing P. Adonis. The specimens also which were regarded as identical witli this insect in Miss 

 Jerniyn's Vade l\Tecum, 2nd edition, Mr. Stephens further considers as possibly identical with his variety y of 

 P. Adouis ; but that variety has the fulvous band on the hind margin of all the wings obliterated. The 

 individuals still preserved in Mr. Kirby's collection, presented to the Entomological Society, appear to me rather 



