EXPLANATION OF SYMBOLS AND LETTERS. 



141 



1. SYMBOLS. 



A, 



AoGl, 



AGl, 



AGID, 



An, 



ANP, 



ANB, 



Ant, 



AntL, 



AntNv, 



Ao, 



Ap, 



Aph, 



Ax, 



ax, 



A(cG, 



AssM, 



B, 



BG, 



bo, 



BGpx, 



BGl, 



BM, 



Br, 



IBr, 



2Br, 



SBr, 



Brh, 



BW, 



G, 



Cb, 



GG, 



Gd, 



Cer, 



GL, 



CI, Gls, 



Gla, 



Glp, 



Clsp, 



IClsp, 



2Glsp, 



Com, 



Cor, 



Gtl, 



Gu. 



anal vein; XA, first anal. 2.1, second anal, etc. 



accessory gland of male reproductive organs. 



acid gland of sting, opening into poison sac (PsnUo). 



duct of acid gland of sting. 



anus. 



anterior wing process of notum. 



anterior marginal ridge of notuni. 



antenna. 



antennal lobe of brain. 



antennal nerve. 



aorta. 



apodeme, any internal cbitinous process of body-wall. 



anterior pbragma of any tergum, prephragma. 



the axlllaries or articular sclerites of the wing base, designated 



individually as lAx, 2AJ;, 3Ax, and 4A.i: 

 accessory axillary sclerites of irregular occurrence in connection 



with the principal axillaries (Ax). 

 axillary cord, or ligament-like thicliening of posterior edge uf basal 



membrane of wing, attached to posterior angle of scutellnm. 

 axillary membrane, the thin membrane of wing base, containing 



the axillary sclerites and forming in some cases the lobes called 



alulae, 

 bulb (bulb of penis or of sheath of sting). 

 body-cavity, 

 any particular part of body cavity such as that prolonged into the 



mouth parts, legs or pieces of the sting, 

 bursa copulatrix. 

 alkaline gland of sting, 

 basement membrane, 

 brain. 



protocerebrum. 

 deutocerebrum. 

 tritocerebrum. 

 barb. 



body-wall. 



costa, first vein of wing. 



pollen basket or corblculum on hind tibia of worker, 

 crystalline cone of compound eye. 

 eardo. 

 cercus. 



crystalline lens of compound eye. 

 cell, cells, 

 claw, 

 clypeus. 

 clasping lobes of ninth segment of male, ])erhaps equivalent to the 



four gonapophyses of ninth segment of female, 

 upper or outer clasper. 

 lower or inner clasper. 



commissure (of either nervous or tracheal .system). 

 cornea. 



cuticle, the chltinous layer of the epidermis, 

 cubitus, fifth vein of generalized wing. 



