86 HAUSTELLATA. LEPIDOPTEKA. 



Sp. 2. Alsus. Alls supra J'uscis ccEruleo-micantibus, suhtiis cinereis strigd uaicu 

 punctorum ocellatorum, (Exp. alar. 10 lin. — 1 unc. 1 lin.) 



He. Alsus. Fabricius. — Pa. Alsus. Lewin, pi. 39. f. 3, 4. — Po. Alsus. Stvph. 

 Catal. 



All the wings above dusky-brown with a blue gloss, especially at the base : the 

 anterior beneath ash-coloured, with a discoidal black lunule, edged with 

 whitish, and six or seven ocellated dots, with a white iris, placed transversely 

 near the hinder margin : the posterior have a discoidal streak, about seven or 

 eight ocelli, forming a transverse band in continuation of that on the anterior 

 wings near the hinder margin, and four or five scattered ocelli towards the 

 base ; all the ocelli are coloured as before : the cilia of all the wings are white : 

 the body is dusky, with bluish hairs : the antennse are dusky, annulated with 

 gray. The female is very similar, but rather more obscure. 



The number of ocellated dots varies considerably ; I have a specimen with only 

 four on the transverse streak of the posterior wings. 



The caterpillar and chrysalis are not known. 



Not a very abundant species : it occurs in fields and woody places, 

 and has been captured at South Creek, Norfolk ; Brandon Warren, 

 Suffolk; Dartmouth, Devonshire; near Andover, Hants; Birch- 

 wood and Darent-wood, Kent; and near Hertford: at the latter 

 place I have taken it myself. It appears at the end of May and 

 the beginning of July. 



Sp. 3. Acis. Alls supra coEruleis {^ant fuscis) mnrg'ine nigro, suhtus cinereis 

 strigd unicfi communi punctorum ocellatorum. (Exp. alar. 1 unc. 2 — 4 lin.) 



Pa. Acis. Wien. Ferz. teste Ochsenheimer. — Po. Acis. Steph. Catal. — Pa. 

 Cymon. Lewin, p!. 38. f. 6. 



Male with the wings above deep blue, with a narrow black line on the hinder 

 margin, and dusky nervures ; the cilia pure white : beneath cinereous ; the 

 anterior wings, with the base bluish, a central black dot cinctured with white, 

 between which and the hinder margin is a transverse bent series of six round 

 black ocellated dots with white pupils : the posterior wings have also a central 

 spot, and an irregular broken series of ocellated dots between it and the hinder 

 margin, and frequently one or more ocelli towards the base, which is bluish : 

 the ciKa are white : the body is dusky with blue pubescence : the antenna; 

 dusky, annulated with gray. The female is brown above. 



The ocellated dots, as usual in this variable genus, are more or less obHterated; 

 a character which in this species has been erroneously assigned as a sexual 

 difference : in some specimens the transverse series on the anterior wings is 

 composed of four ocelli only, the costal one, and that near the anal angle, 

 being obsolete ; others have five, and I possess one with seven, the anal one 

 being geminated : the continuous band on the posterior wings also varies by 

 the obliteration or confluence of the ocelli, which are sometimes nearly all 



