176 Insect Architecture. 



envelope composed of fibres. As may be seen from the 

 upper figure, as soon as the insects have attained their perfect 

 form, they gnaw their way out of the cell and the covering 

 also. The insect is shown as it appears when flying. 



[We will conclude this chapter by a few remarks upon 

 some exotic insects, whose nests are not only remarkable in 

 their form, but are valuable to the entomologist in affording 

 grounds for the reception or rejection of certain familiar 

 theories upon the subject of this volume Insect Architecture. 

 Several of these nests are of comparatively late discovery, and 

 are therefore found in this work. 



[The curious series of cells shown in the left-hand figure 

 is made by a hymenopterous insect belonging to the genus 

 Icaria, and the specimens from which the drawing was 

 taken may be seen in the British Museum. They are made 



