A CIDA LHD. E—A CI DA L I A . 67 



AntennfB of the male simple, ciliated, whitish-brown ; palpi 

 small, curved up, reddish-brown ; eyes black-brown ; face 

 smooth, pale chocolate ; top of the head white ; thorax and 

 abdomen smooth, brownish-white ; lateral and anal tufts 

 small. Fore wings elongated ; costa very faintly curved, but 

 more strongly so towards the apex, which is bluntly angu- 

 lated ; hind margin oblique, almost straight ; anal angle well 

 defined ; dorsal margin straight ; very smooth soft pale 

 brownish-di'ab, or brownish-white ; discal spot small, black ; 

 first line faint and lobscure, very pale brown ; second line 

 pale .brown, more distinct, oblique and rather sinuous, but 

 having no noticeable angle below the costa ; central line 

 similar in colour, more obscure, oblique, and almost parallel ; 

 extreme hind margin faintly edged with black-brown ; cilia 

 concolorous. Hind wings of the same ground colour ; central 

 spot small, black ; just before it is a slender, shaded, pale 

 brown transverse line, and some distance beyond it another, 

 more slender and distinct ; hind margin very faintly edged 

 with brown ; cilia of the ground colour. 



Undersides of all the wings rather paler than the upper ; 

 the fore wings tinged on the costa with black-brown ; discal 

 spot and outer lines alone visible. Body and legs brownish- 

 white ; the third pair of legs short and thickly clothed with 

 scales. 



Very slightly variable in the depth of the ground colour 

 and in the distinctness of the transverse lines, but not in this 

 country to any remarkable degree. Abroad a variety, having 

 much more distinct markings, is well known. 



On the wing in June, July, and the beginning of August, 

 and in confinement a partial second generation has been 

 reared in September. 



Larva much wrinkled and rugose, each segment divided by 

 wrinkles or roughnesses into numerous sections ; also oblique 

 slightly depressed lines on the sides, meeting on the back at 

 an angle at the back of each segment, form a series of obscure 



