ANTHROCERA TRIFOLII. 493 



each of the successive segments. Each of the supraspiracular warts 

 forms a large boss or cushion with from 10-13 small black points, each of 

 which bears usually a short, white, spiculate hair. A few of these 

 hairs, however, are black (mesothorax, 10 hairs, of which the five 

 upper are black ; metathorax 10, the upper one only black ; 1st and 

 2nd abdominals 10, no black ; 3rd, 4th, and 5th abdominals 13, upper 

 one black ; 6th abdominal 12, no black ; 7th abdominal 15, no black ; 

 8th abdominal 10, no black ; 9th abdominal 13, upper one black ; 

 anal, large lateral boss, 20 hairs, three black). The prothorax has the 

 subspiracular tubercle modified into a prespiracular wart or cushion ; the 

 meso- and metathorax have supra- and subspiracular warts. The 

 supraspiracular boss extends narrowly behind the spiracle, and is 

 united posteriorly with a somewhat similar subspiracular boss, carry- 

 ing eight minute dark points, each bearing a short, white, spiculate 

 hair, seven of which form an outer ring, enclosing one centrally. Just 

 above the level of the spiracles, and placed between the supraspiracular 

 warts, is a series of small brown patches, partly covering that portion 

 of the two segments between the supraspiracular warts. This gives a 

 distinctly dark appearance to the supraspiracular line. At the base of the 

 prolegs is another series of tubercular cushions, rather smaller than, but 

 otherwise similar to, the subspiracular warts. Each marginal wart con- 

 sists of eight tubercular points, bearing white hairs. There are no black 

 hairs below the spiracles. The spiracles consist of a black circular ring 

 with a distinct white central orifice. Ventrally : The skin is glassy- 

 looking and transparent, pale yellowish in the incisions. The legs 

 and prolegs are of the same pale colour, the former bearing a minute 

 whitish hook, the latter with an inner flange bearing about 12 small 

 black hooks. The head is smoky-black (a little slaty) in colour, with 

 a white labrum, and white ring at the base of the antennae, the ocelli 

 black. [We are indebted to Mr. South for the larvas from which these de- 

 scriptions were made on Jan. 2oth, 1897.] Hellins also has described the 

 larva at the commencement of the liybernatiny instar. He says that it 

 is then of a green tint with rows of black spots, and that this colouring 

 is not affected by the variation in size which was found to exist in 

 different years, when hybernation commenced. During the hybernating 

 period, however, the larvae become semi-translucent and dirty white 

 in colour ; their rows of spots are changed to reddish-brown, a pair 

 of small dots only on each segment being black, and their bristles 

 seem more prominent. They commence feeding again in February, 

 and, after their first spring moult, are of a greenish-grey colour, with a 

 row of pale primrose spots on each side of the dorsal rows of black 

 X-like spots. When full-fed the ground colour becomes much 

 brighter, and is then of a bluish-green or of a rich yellow-green ; but the 

 two dorsal rows of black spots retain their X-like character. Briggs 

 gives a much fuller description of the adult larva, which he describes 

 as having " the body with short white hairs scattered over it, and 

 with a very few black hairs on the back. The head and prolegs black ; 

 the transverse upper lip and membrane at base of antennae white. The 

 ground colour pale yellowish, arranged in five lines, one mediodorsal, 

 and two lateral on either side. On each side of the dorsal line is a 

 row of large black spots, two on each segment, confluent, or nearly so, 

 but each coming to a point on the back, which makes the dorsal line 

 look like a row of transverse lozenge-shaped spots on the middle of 



