Tra 228 



length, into which each spiracle sends its 

 particular trachea, sometimes as a single tube, 

 sometimes after a slight ramification. (L. 

 trachea, from Gr. tracJiijs, the rough.) 



Tracheal gills. — Bunches of filaments which contain 

 air tubes, attached in pairs to the various body 

 segments, which permit the insect to breathe 

 the air dissolved in water. (Palmen.) (L. 

 trachea, and Scan. M.E. gille, from Dan. gicelle.) 



Tractile sensillse. — The hairs of the body generally, 

 which are movably articulated to the chitinous 

 integument, and which are provided with fine 

 nerve terminations. CL. tractus, from traho, to 

 draw, and sensilke, from sensilis, endowed with 

 sense.) 



Tramosericeous. — The splendour of satin. (L. 

 trans, and sericus, silken.) 



Trans. — A Latin prefix signifying over or beyond, 

 or denoting a complete change. 



Transverse.— Broader than long. (L. trans, and 

 versus, turned.) 



Transverse. — Running across ; when the longi- 

 tudinal line is cut through at right angles. 

 (L. trans, and versus.) 



Transverse impression or future. — A transverse 

 furrow crossing the central portion of the 

 dorsal surface of the mesothorax of Diptera, 

 and terminating on each side a little before the 

 base of the wings. 



Transverse nerves. — The respiratory nerves. 



