394 ENTOMOLOGICAL NEWS [Nov., '15 



br, brain. 



cf, connective tissue and fat. 



die, transverse tracheae connecting the dorsal and lateral longitudi- 

 nal tracheae. 



dim, dorsal longitudinal muscles. 



drf, dorsal rectal fold. 



dv, dorsal vessel. 



e, eye, mesal outline. 



fr, frontal ganglion. 



h, heart. 



ict, inferior cephalic trachea (to ventral muscles of head). 



il, ileum. 



leg, left caudal gill. 



Icgt, left caudal gill trachea. 



Idrti, anterior or chief left dorsal rectal trachea. 



Idrtii, posterior or secondary left dorsal rectal trachea. 



Idt, left dorsal trachea. 



llpa, left lateral pigmented area of rectum. 



llrf, left lateral rectal fold. 



llrti, anterior or chief left lateral rectal trachea. 



llrtii, posterior or secondary left lateral rectal tracheae. 



lit, left lateral trachea. 



Imcgt, left median caudal gill trachea. 



Ivs, left visceral trachea. 



w, muscle. 



mg, midgut (stomach). 



mssp, mesostigma (mesothoracic spiracle). 



mt, Malpighian tubes. 



tnvpa, midventral pigmented area of rectum. 



ti, nerves (in PI. XVII, fig. i, running caudad from last ganglion) 



olm, oblique lateral muscle. 



r, rectum. 



ragt, right anterior gastric trachea. 



rcgt, right caudal gill trachea. 



rdrti, anterior or chief right dorsal rectal trachea. 



rdrtii, posterior or secondary right dorsal rectal trachea. 



rdt, right dorsal trachea. 



rlpa, right lateral pigmented area of rectum. 



rlrf, right lateral rectal fold. 



rlrti, anterior or chief right lateral rectal trachea. 



rlrtix, posterior or secondary right lateral rectal tracheae. 



rlt, right lateral trachea. 



rmegt, right median caudal gill trachea. 



TVS, right visceral trachea. 



sa, superior appendages of imago ("cercoids"). 



set, superior cephalic trachea (to antenna, brain, optic lobe and eye). 



