60 



THE ANATOMY OF THE HONEY BEE. 



SA), since they are associated with the third axilhiry {SAa)). In this 

 species the siihcosta (/S'c) is entirely normal, but in the related horntail 

 {Sirex ffavicornis, fig. 20 B) the enlarged basal part of the subcosta is 

 almost separated from the shaft of the vein, while the latter (fig. 2.-) A 

 Sc) is short and weak, A study of the venation of this wing leads 

 us to believe that the vein which arises from the radius a short dis- 

 tance from its base is the cubitus (Cu). Therefore the basal part 



Fig. 25. — Wings of nymeuoptera and their basal articular sclerites (lAx-.iAx) : A, Sircx 

 flavlcornis, front wing; B, Pcpsis sp., front wing; C, honey bee, front wing; D, honey 

 bee, hind wing. 



of the media is either gone or is fused with the radius. Since we dis- 

 cover its branches in the distal field of the wing, arising from the 

 trunk of the radius, we conclude that the latter is the case. By this 

 sort of reasoning we may arrive at the Comstock and Needham inter- 

 pretation of the Aving illustrated at .1, fig. 2."). From this it is evident 

 that the branches of both the radius and the media have been bent 

 ]:>ack toward the posterior margin of the wing. 



