Libcllnla. 113 



pressed close to the bod\-, while a strong shudder passed 

 through it. The w ings at the basal part of the costal 

 region had begun to swell out considerabh' before 

 the resting period was over. At 1.54, the insect, 

 without any warning, suddenly swung itself upwards, 

 took hold of the nymph-case, and drew out the rest of 

 its abdomen. Neither wings nor abdomen at first 

 expanded very rapidi}-, and at this period of the 

 expansion of the wings there was not much movement, 

 except that the insect shook itself a little backwards 

 and forwards. At 2.12 the wings were the length of 

 the bod\" (which had not }-et increased much in length), 

 and the\- now seemed to be growing much faster. 

 The insect was also swaying itself from back to front 

 continuous!}-, and, as the wings were approaching full 

 size, more rapidly and strcjngiy. At 2.17 the wings 

 were nearl}- or quite 4-in. longer than the bod\'. At 

 times the swa\'ing ceased, while the end of the 

 abdomen moved forward ; then it contracted, and it 

 ajjpearecl that something was being forced into the 

 wings, but the Dragonfly did not wal4< forward along 

 its support. At 2.26, though a little wrinkled along 

 the hind margin, the wings, which were yellowish- 

 white and opaque, appeared to be nearly of full length, 

 and reached about ^in. beyond the extremity of the 

 abdomen, which had thus far not much increased in 

 length. At 2.35, though still opaciue, the wings seemed 

 to be full)- dexeloped and extended nearly lin. be}-ond 

 the tip of the bod\'. Swa\-ings of the abdomen still 

 occurred at times, but the\- appeared to be nearly 

 over. The wings were still held as in the resting 

 position of the Agrionidcc, with their upper surfaces 



I 



