LYCiENID.T:. — POI.VOMMATUS. 87 



wanting; I have one specimen with the three central dots of the scries 

 alone, while in a second the dots are all so large as to become united : the 

 discoidal streak and the basal ocelli on the posterior wings beneath vary also, 

 without reference to sex. 

 Ochsenheinier refers Lewin's figures, above quoted, to Po. Argiolus, notwith- 

 standing they correctly represent the present insect, and Lewin has figured Po. 

 Argiolus as also quoted by that author. 



A scarce, or rather a local species : found in chalky districts in 

 Norfolk, Cambridge, Yorkshire, and Dorsetshire ; also near l^rocken- 

 hinst and Amesbury, Hants ; and on Windlesham-hpath, Surrey, 

 towards the end of May and of July. 



Sp. t. Arion. Alis snjmi fascis, disco ca^ruleo macuUsque atris, suhtils cuncscen- 



tihus punctis ocellarihus. (Exp. alar. 1 unc. G — 8 lin.) 

 Pa. Arion. Linn'.—Letrin, jil. 37. — Po. Arion. Stejih. Calal. 



Wings above brown with a blue disc, or blue with a brown margin posteriorly ; 

 anterior with a central transverse black spot, behind which is an undulated 

 row of elongate or ovate black bars, the bars disposed longitudinally, and 

 varying in number from two to seven, the rniddle ones being largest, and 

 those towards the costa least ; the posterior wings have some obsolete ocelli 

 towards the hinder margin : beneath, dusky ash-colour; the anterior wings 

 with eight or nine ocelli, two in the centre, the one towards the base usually 

 minute, and about seven forming an undulated band between them and the 

 hinder margin, all with a black pupil and white iris : on the hinder margin 

 are two rows of black wedge-shaped spots, or lunules, with a faint pale or 

 whitish dot attached to each ; the cilia white, with brown bars beneath : the 

 posterior wings with the base blue-green, and having an angulated row of 

 four ocellated dots, followed by a transverse discoidal crescent, and then by 

 an interrupted angulated and waved band, composed of eight distinct ocelli, 

 the inner but one being frequently double ; beyond this, on the margin, are 

 two rows of lunulated dots as in the anterior wings : cilia as in the anterior 

 wings : body dusky, with bluish hairs above, hoary beneath : antenna' black, 

 annulated with white. P'emale with the wings more dusky, and the discoidal 

 spots larger. 



Var. /3. Wings nearly immaculate above. 



Var. y. Female with all the wings bearing large black dashes on the upper sur- 

 face ; the anterior beneath with eleven large ocellated spots, three central, tlie 

 rest forming the usual band ; the posterior below with thirteen very large ocelli, 

 four basal, eight in the waved band, and one adjoining the discoidal streak ; 

 all the wings with the two hinder rows of wedge-shaped dots. 



An insect of great rarity, found on commons and pastures in 

 the beginning of July; it was taken by the late Dr. Abbott near 

 Bedford, in the Mouse's Pasture, where Mr. Dale caught a single 

 specimen in ISIJ): it has also been caught near the signal-house 



