112 THE ENTOMOLOGIST. 



occasions been indebted to the Rev. E. N. Bloomfield, M.A., of 

 Guestling Rectory, near Hastings. In December, 1881, he kindly- 

 sent me several pupae, from which I bred imagos the following 

 year; and on September 13th, 1882, I further received from him 

 a supply of larvae which he had collected from Salsola kali growing 

 on "blowing sand by the sea-shore at Camber, near Rye, East 

 Sussex." They were of various stages of growth, those apparently 

 full-grown being about three-quarters of an inch long, rather 

 attenuated when crawling, but of fair proportions when at rest. 

 The head has the lobes rounded, is slightly narrower than the 

 2nd, and still narrower than the 3rd, segment ; body cylindrical, 

 and of almost uniform width, tapering only a little at the posterior 

 extremit}^ ; skin smooth, but not at all glossy, except on the anal 

 segment, whereas the head and frontal plate are highly polished ; 

 segmental divisions well defined ; there is also a slight transverse 

 depression on each segment, and a puckered ridge along the 

 spiracular region. The ground colour of the dorsal area varies 

 from pale pea-green to dark green; head gray, more or less 

 marked with intense black, some of the darker larvae indeed 

 having the cheeks and part of the face perfectly black. Dorsal 

 stripe clearly defined, either of a darker shade of the ground 

 colour, of whatever shade of green, or in some specimens purplish 

 brown ; subdorsal lines only faintly discernible, grayish ; there 

 are no perceptible spiracular lines ; usual dots very minute, 

 black, except those on the 3rd and 12th segments, which are 

 larger, and white, encircled with black; spiracles also very 

 minute, brown. Ventral surface uniformly of a paler shade of 

 the ground colour. Another variety, which is evidently much 

 less common than the preceding, has the ground colour dark 

 olive, the dorsal line purple, and between it and the gray 

 subdorsal lines another faint line of a paler purple ; whilst along 

 the spiracular region is a broad irregular stripe, brownish yellow 

 in the centre, but edged above and below with gray; this stripe is 

 really composed of a series of blunt wedge-shaped marks laid 

 longitudinally, and the base of each mark adjoining the apex of 

 the one following it. This variety, too, has the head black, and 

 the mandibles dark sienna-brown. Ventral surface dingy olive- 

 green. The larva spins small silken webs about the tops of its 

 food-plant, Salsola kali; and when full fed descends below the 

 surface of the sand, and forms a small oval cocoon composed of 



