THE GENUS ACROXYCTA AND ITS ALLIES. 223 



3 and 4 and round the posterior trapezoidals of 6.7 and 11, 

 and white or orange markings on the front portion of the 12th. 

 Segment 5 is especially large and black, 11 is small and its 

 tubercles dwarfed, 12 is decidedly humped. Below, the colour 

 is pale brownish, as well as round the sub-spiracular tubercles. 

 The hairs are long and black, from 6 to 12 on each tubercle, 

 except the post-spiracular, which is barely visible. \\''hen full- 

 fed in this skin, the colour is fuscous brown, and the white marks 

 round the trapezoidals, now take the form of a series of orange- 

 yellow spots and patches between the trapezoidals and surround- 

 ing the posterior trapezoidals, most marked on segment 3, 

 especially as regards colour, next on 11, and are wanting on 5, 

 8 and g. The markings round the sub-spiracular tubercles 

 also form a series of yellow patches, amounting almost to a 

 lateral line. 



On entering the 3rd skin, the tubercles and hairs are so 

 abundant and black, that nothing further can be detected, 

 except the presence of a reddish lateral line, and that some 

 pale markings exist, especially on 11, and also on 12 and 13. 

 When fairly grown in 3rd skin, the length is 6-7 mm., it sits, 

 when at rest, in typical riimicis attitude, head pressed flat, with 

 jaws forward, dorsal surface rising thence rapidly to hump on 

 5th segment, then falling with a hollow sweep to 11, and rising 

 suddenly to hump on 12. The hump on 5 is not yet distinct, 

 and results merely from the largeness of the segment itself and 

 its larger tubercles. On segment 12, the large tubercles rest 

 on a surface higher than the general level. All the anterior 

 trapezoidal tubercles are larger, they stand out in a pronounced 

 manner, and give an angularity to the outline. An orange 

 rufous area, forming a lateral band, surrounds the sub-spiracular 

 tubercles ; on 3 and 4 are white marks, between the dorsal 

 tubercles ; on 6 and 7 there is a white double line between the 

 anterior and posterior trapezoidals ; a similar marking forms a 

 continuous line along 10, 11, and on to 12, and 11 has two 

 dorsal white spots ; 13 is paler than the rest of the larva. 



In the 4th skin, the appearance is very much that of the full- 

 grown larva, the 5th segment very large, tapering rapidly to the 

 head; the rz/ ;///«> form is, in fact, almost more pronounced here 

 than in the full-grown larva — a parallel perhaps to the other 

 ViininicB, which have a runiicis outline in the 3rd and 4th 

 skins, which they afterwards lose. The general colour is black, 

 with two somewhat square white marks below and in front 

 of the trapezoidals of 11 and 12, as somewhat conspicuous marks. 



