THE ENTOMOLOGIST. 81 



death, and rolls itself in a ring ; but soon unrolls, and begins 

 to crawl with considerable rapidity : it hybernates early in 

 September, and feeds again in the spring, being generally 

 full-grown by the 1st of May. Head slightly narrower than 

 the 2nd segment ; body with the segments well marked, and 

 each having a transverse series of twelve warts, from each of 

 which issues a dense fascicle of long bristles. Colour of the 

 head, body, legs and claspers black ; bristles also black, ex- 

 cept on the dorsal surface of the 5th, 6th and 7th segments, 

 where they are red-brown, forming a conspicuous brown 

 patch : when full-fed it spins a loose cocoon among the 

 plaintain-leaves or blades of grass, and changes to a dark- 

 coloured glabrous pupa, the moth making its appearance in 

 June. I am indebted to Mr. Brown, of Cambridge, for a 

 supply of these larvae. — Edtvard Newman. 



Descripiioii of the Larva of PericalUa syritigaria. — The 

 eggs are laid in July and August, on the twigs or leaves of 

 Syringa vulgaris (garden lilac) or Ligustrum vulgare (privet) ; 

 the young larvae emerge in August, and by the middle of 

 September, when they usually cease feeding for the winter, 

 have attained a length of three-quarters of an inch : they 

 then invariably rest on the margin of a leaf in an arched 

 posture, the ventral surface of the 4th and 5th segments 

 being brought into contact with the ventral surface of the 8th 

 and 9th segments, the two extremities forming no portion of 

 the arch, but being extended on the margin of the leaf, the 

 claspers, but not the legs, being firmly attached : when an- ^ 

 noyed it rocks itself to and fro, the posterior segments, 

 anchored as it were by the ventral claspers, alone remaining 

 stationary ; the rocking or oscillating motion is also ob- 

 servable when the larva is crawling. The head is prone, 

 rather wider than the 2nd segment ; the face flattish and the 

 crown slightly notched : the surface of the body is singularly 

 uneven, being both humped and indented, and emitting a 

 number of hairs and bristles ; the principal humps are three 

 dorsal pairs transversely seated on the 6th, 7th and 8th seg- 

 ments respectively ; the pair on the 8th segment are the 

 longest, and the most approximate at the base ; towards the 

 apex they separate, being slightly curved outwards and back- 

 wards ; those on the 7th segment are the shortest, and most 

 distant at the base ; on each side of the body, exterior to the 



