GYMNANCYLA CANBLLA. 247 



them is a broad stripe of glaucous-green, darker than 

 the ground ; just beneath the subdorsal line on the 

 third and twelfth segments is an ocellated spot of pale 

 flesh-colour encircled with black ; the minute spiracles 

 are of the ground colour, delicately outlined with 

 brown ; the tubercular dots are brown, but are scarcely 

 visible without the help of a lens, nor are the fine 

 longish hairs which grow from them, and which seem 

 to be more numerous at each end of the body. 



Varieties occur, in which the whole of the back has 

 a slight pinkish tinge; others are darker, and of a 

 reddish-grey colour ; but when mature, all assume 

 rather a pale ochreous-green tint. 



The cocoon when free in the sand is half an inch in 

 length, ovate in shape, dumpy, irregularly rounded 

 at one end and a little pointed at the other; it is 

 composed of grains of sand spun together, and is 

 smoothly lined inside with silk ; when the cocoon is 

 attached to a stone it is about five-eighths of an inch 

 or a little more in length, but the ends are rounded 

 and of uniform size tapered off close to the surface of 

 the stone. 



The pupa is about three-eighths of an inch in 

 length, rather slender and smooth, but with no 

 peculiarity of form, save that the tip of the abdomen 

 is rounded off and the wing-cases rather long ; it is of 

 a pale greenish-ochreous tint, the wing-covers green, 

 and the whole surface rather shining. (William 

 Buckler, 18th September, 1871 ; E.M.M., December, 

 1871, VIII, 163—165, with additions from Note Book 

 I, 131 and 139.) 



For the opportunity of studying this interesting 

 species I have on two occasions been indebted to the 

 Rev. B. N. Bloomfield, M.A., of Guestling Rectory, 

 near Hastings. In December, 1881, he kindly sent 

 me several pupse, from which I bred imagos the fol- 

 lowing year ; and on the 13th of September, 1882, I 

 further received from him a supply of larvae which he 

 had collected from Salsola kali growing on " blowing 



