XVI. FAMILY TABANID^, 



BY PROF. J. S. HINE. 



Fig. 63. Tabanns lineola; enlarged. After Lugger. 



Head large, the occiput flattened or concave. Antennae 

 porrect, the third joint composed of from four to eight 

 segments or annuli. Eyes large, pubescent or bare, con- 

 tiguous above in the male, and often with some of the 

 facets much larger than the others; in the living insect 

 of either sex usually with green or purple bands or spots. 

 Ocelli present or absent. Proboscis projecting, some- 

 times as long as or longer than the body ; palpi two-joint- 

 ed, that is with one movably articulated joint, which is 

 variable in length and thickness in different genera. 

 Thorax and abdomen clothed with fine hairs, never with 

 bristles. Abdomen broad, never constricted at the base, 

 composed of seven visible segments; genitalia never 

 prominent. Legs moderately stout, the tibiae sometimes 

 much dilated ; middle tibiae always with two spurs at 

 tip; empodium developed pulvilliform, the pulvilli al- 

 ways present. Wings but little variable; two submar- 



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