or black) spot of oval or some such shape, towards the costal margin, a 

 little or considerably beyond the middle of the wing, bounded usually by 

 the auxiliary and 1st longitudinal veins. This is the stigma in the most 

 ordinary sense of the word, as used by systematists. (ii) Four very 

 small apertures, easily overlooked, generally situated each at the bottom 

 of a small pit, are termed the prothoracic and mctathoracic stigmata 

 respectively. The former are placed, one on each side, below the 

 shoulders towards the front ; the latter, immediately in front of the 

 halteres. The prothoracic stigma is by some called the mesothoracic. 

 These stigmata or spiracles serve for the admission of air to the 

 respiratory system. 



Style. Used in two senses : (i) The elongate, conical, blunt or pointed solid 

 appendix to the ultimate joint of the antenna?, as opposed to the arista 

 (q. v.). (ii) Osten Sacken's name for "a single inmovable stylifonu 

 organ," visible im mediately below the genital organs in LIMNOBIINI. Not 

 seen in other groups in the same form, but replaced by the aculeits, "a 

 slender, horny, often curved and pointed piece, which is entirely 

 concealed when the forceps is closed and projected when it is open " 

 (Osten Sack-en). 



Subapical cell. -\ 



Subcostal cell.} See PP . 8 and 13. 



Subcostal vein. Strictly, the vein below the costa, which in the present work 

 is called the auxiliary vein (after Osten Sacken and many recent 

 authors). Verrall and some others apply the term to the 1st longitudinal 

 vein. 



Submarginal cell. See pp. 8 and 13. 



Supra-alar groove. A groove on the mesothorax just above the base of the 

 wing, short and often indistinct. In bristly species, important bristles- 

 are often situated there. 



Suture. A general term for an impressed line. -The principal sutures are the 

 transverse (p. 5), on the thoracic dorsum, and the pleural (p. 5), on the 

 sides of the thorax. 



Tanystoma. Brauer's superfamily name, adopted also by various other 



authors, for the TABANID.E and LEPTID.E. 

 Tarsus. The third and ultimate of the conspicuous divisions of the legs, 



always of live distinct though often closely applied joints, of which the 



first is called the metatarsus, the next is the 2nd, and so on, the 5th 



bearing the feet. 

 Tawny. A pale brownish yellow colour varying in intensity, approximately of 



the colour of a lion. 

 Tegulce.See Squama. 

 Tergite. The plates, or sclerites, on the tipper surface of an insect ; here more 



especially applied to the upper half of an abdominal segment, these 



being numbered in rotation, beginning with that one nearest the 



thorax. 



Tergum. The upper surface of an insect. 

 Testaceous. Technically brick-red, according to handbooks on colour, but my 



personal opinion is that most authors have used it for what may be 



better described as " reddish yellow." 



