62 VARIETIES OF 



dark basal streak close by the thorax is followed by another basal 

 streak in which the claviform is outlined in a darker colour ; the orbi- 

 cular small and outlined in paler, as is also the reniform ; a very 

 indistinct pale line just beyond the reniform, and another pale line 

 parallel to the hind margin. Costal area from base to apex very dark 

 brown ; also dark on hind margin. Hind wings dark grey, no lunule " 

 (' Sarnmlung europaischer Schmet.' fig. 145). The hind wings of all 

 the varieties are practically alike, those of the males being grey, and 

 those of the females but little darker in colour. 



A. Ground colour whitish-grey. 



a. var. clavigerus, Haw. This is described by Haworth as 

 follows : " Bombyx. Thorace albo griseoque, alis griseo-pallidis, 

 stigmatibus intus griseis extus atris, alis posticis cinereis." " Antenna 

 f erruginaa, stigma anticum griseum atro late cinctum ; stigma reniforme 

 ad strigam posticam attingens. Thorax fuscescens. Alas posticas cine- 

 rascentes lunula media, venisque saturatioribus " (' Lepidoptera 

 Britannica,' p. 114). He also adds a var. p., of which he writes: 

 " Stigmate antico subocellari, seu annulari, puncto atro pro pupilla." 

 The pale whitish-grey varieties included in this name, vary slightly 

 inter se. Although equally pale, some of the specimens have quite 

 distinct basal and angulated lines, whilst others are completely with- 

 out them. All however, with scarcely an exception, have fairly 

 well-developed stigmata, although there appears to be an endless 

 variation not only in shape but in the way they are outlined and filled 

 up with a darker shade. All my specimens of this variety have been 

 captured at Deal. 



P. var. irrorata-pallida, mihi. This variety has the same pale 

 greyish ground colour as the last, but is irrorated with blackish scales, 

 so that it appears to be slightly darker. The typical transverse lines 

 are generally more distinct than in clavtgerus, and the stigmata well 

 marked, there are often also traces of a series of short dark dashes 

 near the outer margin. The hind wings grey as in the type and the 

 other varieties. A sub- variety of this form occurs, in which the costa 

 is intensely black, the inner margin being of the typical coloration. 

 This I would call costa-irrorata. 



y. var. mrgata-pallida, mihi. With the ground colour of the 

 anterior wings pale greyish, but with the basal and outer areas black ; 

 the central area thus shows up as a pale central band containing the 

 stigmata. This is a very rare variety. My specimens, as is the case 

 with most of my best varieties, have come from Deal. 



8. var. sincerii, Frr. This is precisely the opposite in the arrange- 

 ment of colour to the last. The pale ground colour in this remains at 

 the base and outer margin, leaving the central area irrorated with 

 black scales, so as to give it the direct appearance of a dark central 

 band. Freyer's description is as follows: "Colour like that of 

 A. corticea ; fore wings, body and fringes, light-brown, tending towards 

 grey. The central area is much darker, and enclosed by two semi- 

 curved bands ; another darker, suffused band runs from the tip, near 

 the outer margin to the inner margin ; stigmata scarcely visible, the 

 orbicular being the darkest. Hind wings whitish, with darker shades 

 near the outer margin " (' Neuere Beitrage ' &c., p. 101). 



