214 Dr. T. A. Chapman on the 



had to be drawn out. As it does so, the loop which was 

 stretched over the sides of the four segments (2nd, 3rd 

 thoracic, 1st, 2nd abdominal) on one flank, gradually leaves 

 them and becomes stretched over the same line on the 

 opposite side. Then the process of fastening it and 

 spinning various sinuations of silk over the other place 

 of attachment of the loop is repeated. I saw it do this 

 several times, and then at one end it delayed a little, and 

 came up with the head not above the loop, still less the 

 front-legs, but with the loop across the front of the head 

 at the base of the labrum. When about the middle, it 

 made some movements and I thought it was going to 

 throw the loop backwards into place ; this, however, it did 

 not do, but continued to the other side ; so far as I could see 

 it spun no thread this time, it then twice repeated the 

 ordinary process of adding a thread, and again repeated 

 the passage with the thread above the labrum. It was 

 now making a good many contortions with the effect that 

 the anterior segments became decidedly diminished in 

 bulk ; as soon as it reached the end of the loop with it 

 above the labrum, it put the head with little difficulty under 

 the loop so that the loop was across the vertex, and then 

 making the passage across and raising the mouth end of 

 the head, the loop easily slipped backwards. It was not, 

 however, before some little time spent in twistings and 

 contortions, that looked as if intended to push the loop 

 back, but were really effective in again distending the 

 front part of the larva and diminishing the posterior that 

 the loop fell into its place between the 2nd and 3rd 

 abdominal segments, and the larva rested as quite satisfied. 



Though the larva was slow and deliberate in its move- 

 ments this was all done in a very few minutes ; the threads 

 of the girth seem to remain distinct and separate, and do 

 so to much nearer their attachment than in T. cassandra, 

 where the spreading of silk over the attachment includes 

 the lapping of the adjacent portion of the loop. 



It may be noted that the position of the loop in the 

 larva between the 2nd and 3rd abdominal is constant, as I 

 saw it in all specimens, though I did not see it made. In 

 the pupa it is different, viz. just behind the middle of the 

 meta-thorax. 



It sinks into the soft chitin of the newly-moulted pupa 

 which, as it were, flows over it in two places on each side, 

 there is in fact a lappet formed at each of these places, 



