is:.;. I 31 



ridges o£ the back, thin double slanting lines on the sides, and a margin 

 of yellowish-white along the sub-spiracular region. In about five 

 weeks it is full-fed, and then reaches the length of f inch, and some- 

 times more, when stretched out in crawling ; the figure somewhat 

 onisciform, the head very small and retractile into the second segment 

 beneath ; the second segment, w^hich is the longest, is but slightly 

 convex above, the others are arched on the back, the third, fourth, and 

 fifth being the highest, and thence the others slope a very little to 

 the tenth ; these eight segments, from three to ten, are crested with 

 two ridges of humps, between which lies the sunk dorsal space, broad 

 and hollow on the third and fourth, and flattened and narrowing 

 gradually to the tenth ; on these segments the divisions are deeply 

 cleft through the ridges — thus producing the appearance of humps ; 

 segments eleven, twelve, and thirteen are simply convex, and slope 

 towards the anal end : the sides, although sloping outwards, become 

 almost concave near the projecting rounded sub-spiracular ridge, which 

 continues round the anal segment, and overlaps all the shoi-t legs ; the 

 belly is flattened. 



In colour, there seem to be several varieties : one, a bright yel- 

 lowdsh-green, wdth paler lines as above, the head purplish-brown, but 

 looking almost black by contrast, and with an ochreous streak above 

 the mouth and at the base of the papillse, the spiracles round and flesh- 

 coloured, the whole skin of the body velvety, with its surface thickly 

 covered with yellowish warty granules, each bearing a minute whitish 

 bristly hair. 



Another variety, of the same yellowish-green ground-colour, has 

 dashes of deep rose-pink on each humped ridge of the back and in the 

 dorsal channel continued to the anal end, and an additional dash on 

 each side of the fifth segment ; along the sides, fine double lines of 

 pale greenish-yellow, edged with darker, slanting backwards ; the sub- 

 spiracular ridge itself of a whitish-flesh colour, but deepening above and 

 below with a narrow border of full rose-pink, which again melts into 

 the green ground. 



Another variation, which, from the too rapid development of the 

 example exhibiting it, was but imperfectly noted, is of a very pretty mix- 

 ture of green and black ; the ground colour green, as before, a transverse 

 bar of black across the middle of the second and the beginning of the 

 third segments, a dorsal series of thick dashes from the third to the 

 tenth, on the eleventh, a dash on either side enclosing the green ground 

 as an interruption, with the dorsal marking again occurring on the 



