ACRONYCTA STRIGOSA. 11 



sides were of this same colour, but those on the dark 

 markings on the back were black, each emitting two or 

 three longish black hairs ; those on the lower part of 

 the body green hairs ; all the surface of head, body, 

 and hairs very glossy. On the 17th one had moulted 

 the fourth time ; the head was now green in the centre 

 of the face and black from the crown down the side of 

 each lobe to near the pale green upper lip. One laid 

 up for this moult had been badly bitten on the side of 

 the ninth segment and died ; another, a moult younger, 

 had died from part of the twelfth segment being eaten 

 away. Two others also got over this moult, and they 

 now fed by eating pieces out from the edges of the 

 leaves ; by the 20th they had become seven and a half 

 lines long. On the 23rd one had, during the previous 

 night, moulted the fifth time, and eaten up its cast skin ; 

 another had moulted a fifth time in the early morning, 

 its cast skin lying beside it, and another was laid up 

 waiting for its moult. The earliest was feeding well on 

 a hawthorn leaf, and was already nine lines in length ; 

 it was handsomer than before ; on the fifth segment the 

 second or outer pair of dorsal tubercles were promi- 

 nently developed into slight humps, and the back of 

 the twelfth segment was elevated into a very prominent 

 hump, with two apices formed by the second pair of 

 tubercles, from which the hinder slope downward is 

 continued by the thirteenth segment to the end of the 

 anal flap ; the ground colour of the body was a rich 

 velvety yellow green, well relieved by a deep crimson- 

 brown dorsal marking, beginning on the head, where it 

 occupied the full breadth, but on the second segment 

 narrowing towards the third, and then similarly towards 

 the fourth, on which it widened to embrace the rather 

 humped tubercles on the fifth, and then diminished to 

 no more than a broad stripe on the sixth and seventh, 

 but suddenly widened to embrace the area of all four 

 tubercles on the eighth and ninth, and thence was very 

 gradually less to the hump on the twelfth, whence only 

 a narrow dorsal stripe passed to the anal flap ; all the 



