112 BRITISH BUTTERFLIES 
Mr. Haworth’s specimen is supposed to have been taken in Kent. Mr. Stephens gives his specimen as a 
variety, describing it thus :—‘‘ Colour of the upper surface rather more intense ; the inferior ocellated, nearly as 
in Alexis ; but destitute of a fulvous, marginal fascia, in lieu of which it has a series of ocelli, with minute black 
irides, cinctured with white, faintly tinted with yellowish towards the imner 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 [Alexis] be the kind intended.” The description which IT 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 1826, in a grassy lane, near Ripley, Surrey. 

SPECIES 11.—POLYOMMATUS DORYLAS. THE AZURINE BLUE BUTTERFLY. 
Plate xxxv. fig. 3—5. 
Synonymes.—Papilio Dorylas, Fabricius, Wien. Verz., Hubner | Argus Dorylas, Boisduval, Icon. Hist. Lep. pl. 14, fig. 1—3. 
Pap. pl. 67, fig. 289—291. Papilio Hylas, Esper. Schmetterl. pl. 45, Suppl. 21. 
Lycena Dorylas, Ochsenheimer. Papilio Thetis, Esper (female), pl. 55, cont. 5, fig. 1. 
Polyommatus Dorylas? Stephens Il. Haust. 1, p. 90. Wood, Papilio Golgus, Hiibner, Europ. Schmett. (variety.) 
Ind. Ent. tab. 2, fig. 67. | L'azuré, Ernst. Papil. d’Europe, pl. 83, Suppl. 2, pl. 4, fig. 82. 
The expansion of 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 the 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 under 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 antenne are ringed with white. 
The upper 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 saturated 
with blue at the base, with similar spots to the male, except that the fulvous markings are brighter. 
This species differs 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 the 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 Lewin’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 with this insect in Miss 
Jermyn’s Vade Mecum, 2nd edition, Mr. Stephens further considers as possibly identical with his variety y of 
P. Adonis; but that variety has the fulvous band on the hind margin of all the wings oblitcrated. The 
individuals still preserved in Mr. Kirby’s collection, presented to the Entomological Society, appear to me rather 
