38 



BidtisJi Dragonflies. 



immediately in front of the mouth, where the formidable 

 maxillae (side jaws, P'ig. i6) make short work of it, 

 struggle as it may and often does. 



Fig. i6.— Mandibles and MAxnx.^'". of Nvmph of Anax imperator. 



(Much magnified.) 



To complete the references to Figs, ii and 12, v is 

 the vertex or crown ; 0, the occiput ; l\ the eyes ; a, the 

 antennae, short and usually consisting of seven joints ; 

 /., the pro-thorax ; -iv.s., the wing-sheaths. Of the legs, 

 f is the femur ; /, the tibia ; t.j., the tarsal joints, 

 usually three in number (Fig. 43) ; r, the ungues, or 

 claws. The ten abdominal segments are numbered 

 accordingly, the first three being almost hidden beneath 

 the wing-sheaths. Of the fi\e anal appendages in 

 Fig. II, u.a.a. is the upper, Idf. act. are the lateral ones, 

 and /.a.a. are the inferior, or lower, ones. In Fig. 12 the 



