170 THE entomologist's reookd. 



and very large. The abdominal legs on the 7th and 8th segments are 

 rudimentary. The larva loops and assumes a sphinx-like attitude at 

 rest : it falls in a double curve, the anterior coil larger than, and in a 

 different plane from, the posterior. 



During the second week of October some of the larvfB moulted and 

 became glaucous or pale olive-green, with a brown head which was 

 smaller than the 2nd segment. The latter bore a small chitinous plate. 

 Each division now became swollen in the centre, making the insect 

 a2)pear moniliform. Length 3 to 4 mm. The trapezoidal tubercles 

 were distinguishable as faintly marked black sjjots, each with a short 

 hair. The abdominal legs on the 8th segment had become much 

 developed, but not lit for use. 



By the end of October and early in November many had passed 

 through a second moult ; these were 5 to 7 mm. long, and in shape 

 moniliform ; their ground colour was dark glaucous to olive-gi'cen, with 

 a brownish shade in some ; the under surface was almost as dark as the 

 upper. The plate on the 2nd segment had disappeared, but the 

 tubercles were well marked as approximate trapezoidals, two anterior 

 and two posterior to the spiracle. The latter had two hairs, the 



former one. On segments 4 to 11, the lateral tubercles were posterior 

 and inferior to the spiracles, and had each two hairs. The spiracles 

 were })laced at the upper part of the white spiracular line, which was 

 broad and very conspicuous. The dorsal and sub-dorsal lines were pale 

 and distinct, especially the former. The head was pale brown, with 

 darker cheeks and paler central line. The true legs were brown, the 

 abdominal legs pale translucent green with brown extremities, and 

 furnished with many hooks ; all the latter were now fully developed and 

 used for progression. Many rested in a straight line, a few only retaining 

 the sphinx attitude. They held on to the food-plant tenaciously, lying 

 prone along the stem and, when they fell, coiled themselves in two 

 different planes as before. They fed indifferently on Erica vulgaris 

 and Erica cinerea. 



Towards the third and last weeks of November a large proportion 

 had moulted a third time and were about 8 mm. in length. The larvte 

 were now moniliforin and somewhat wrinkled transversely, olive or 

 grass-green in colour, and darker on the lateral area than on the dorsal. 

 The dorsal line was almost pure white, the sul)-dorsal less conspicuous 

 and tinged faintly with yellowish-green. The spiracular line was a 

 little less consi^icuous than before, with a pale yellow blotch in the 

 centre of each segmental section below the spiracles. The post- 

 spiracular tubercles and hairs were distinct — there were no anterior 

 ones. The trapezoidals were much larger on the 2nd segment than 

 elsewhere. The head was pale brown with an olive tint and three pale 

 lines (in one green) with about twenty short hairs scattered over it. 

 The larva, on falling, coiled in a loose flat ring, with its head directed to 

 the abdominal legs, or else rested more or less straight. 



By the middle of December, several had passed through their -Ith 

 moult, and were 1"1 to 1"5 cm. in length. The larva — moniliform — 

 tapered gradually from the 5th segment to the head. The ground colour 

 was brown, with a reddish tinge, most marked on the dorsum, and darkest 

 just above and below tlie spiracular line ; the underside, brownish and 

 paler. The dorsal and sub-dorsal lines were white and very distinct ; 

 the former was widest opposite the centre of each segment, and darkened 



