268 LEPIDOPTERA. 



a third with grey-red hind wings ; and two which have, in 

 each case, one fore wing uniformly black-brown, in one 

 case the right, in the other the left. Mr. C. A. Briggs 

 has a specimen with the fore wings of a pale yellowish-brown 

 without markings except a few brown spots in the central 

 area, and Mr. J. A. Clarke one ha vie g in the left hind 

 wing a stripe of the colour of the fore wings. Mr. 

 Sydney Webb possesses a specimen with the pale markings 

 of the fore wings tinged with rosy, another with a fore 

 wing on one side unicolorous brown, the opposite wing 

 being normal, but its hind wings are nearly uniformly deep 

 black ; another with all the markings of ordinary shape but 

 only faintly indicated in pale buff in the fore wings, in faint 

 blackish on the hind ; and in Mr. Bond's collection one having 

 the fore wings buff without markings, and the hind wings with 

 only yellow indicatiops of the usual black spots ; others with 

 white fore wings, or wholly brown, or smoky black. It is 

 indeed hopeless to attempt to convey in words a definite idea 

 of the gorgeous array of variations, extreme and inter- 

 mediate, to be seen in some of these large collections. The 

 vast majority of these strange forms are obtained in Lanca- 

 shire, the West Riding of Yorkshire, and adjacent districts. 

 For some reason totally unknown to us these curious sports 

 of nature are there frequent, though in other districts 

 nothing extraordinary is obtainable. 



On the wing in July aud the beginning of August. In 

 confinement a partial second generation is sometimes 

 obtained in August, September or October. 



Larva stout, very hairy, anterior segments slightly taper- 

 ing ; head black. From the fourth to the twelfth segments are 

 dorsal and subdorsal rows of white raised spots from which 

 arise long pale hairs, while the remaining numerous spots 

 produce bunches of red-brown hairs of similar length ; on the 

 front segments are black hairs with whitish tips upon the 

 back ; rather pale ones below, legs black ; prologs pinkish grey. 



