Life- History. 



21 



some neighbouriny; wall or fence* it climbs till it is well 

 out of the water, and also clear of an\' objects that might 

 touch and injure it during the coming change. Here it 

 remains for a while, perhaps for an hour or two, clinging. 



head upwards, to the support it has chosen 'F; 



■)• 



At this period of its life the thoracic spiracles are often 

 conspicuous, and no doubt it breathes atmospheric air 

 through them, as jjerhaps it did just before lea\ing the 



I'lG. 7. — Ny.^u^h of Likel- 



H'l.A orADRIMACri-ATA, 



ready to disclos1-: 

 Imago. 



Fr;. 8. — I.MAGO OE LnjEI.ULA 

 orAUKIMAClLATA I'AKTLV 



orx OK THE Nymph-case, axd 

 i\ "Resting" Position. 



water, for when the great change is near it likes to keep 

 the fore-part of its body out of the water. 



* In 1897, near Byfleet, several empty nymph-cases of Caloptcryx spleiidens 

 were found on walls, to get to which the nymphs must have crossed the canal 

 path ; and Mr. Bell-]Marley found an emjity case of an ^Eschna (jnolialjly 

 cvaiiea) on a high railing, to reach which the insect must have crawled ten 

 yards or more. The absence of reeds was no doubt the cause of this long 

 journey. Mr. Wattson also noticed the same thing in Richmond Park. 

 In confinement nymphs often become restless, and get out of the vessels 

 in which they are placed, especially when they are nearly full grown. 



