GENERAL LAWS OF ANIMAL STRUCTURE. 275 



pairs, and these are called hexapods. If it be allowable 

 to pass from one department to another, we might go 



Oni&nuiGb 



^Labium. 





tipictamum 



Tt«\wtar# It..- .11 @>° 



fcwCa 



SVYetatUortyt 



• 1 10 i 

 Sternvte J )0 .. 



Fig. r77.— External anatomy of Caloptenus spretus, the head and thorax 

 disjointed : up, uropatagium ; /, furcula ; c, cercus. (Drawn by J. T. 

 Kingsley.) 



