IV 



Labium enclosing four stylets in $ , six in 9 . The terminal 

 joint of the palpi is inflated, and the palpi hang down in front 

 of the proboscis. Eyes in $ holoptic (contiguous), occupying 

 most of head area. In ? dichoptic (separate). The male fly 

 does not bite. 



Egg. — Spindle-shaped. They are laid in spherical or flat 

 groups on the stems of grass, etc. 



Larva. — Are aquatic or live in damp earth. They are 

 carnivorous. They are about an inch long. 



Pupa. — Aquatic or terrestrial. Over an inch long. 



The Tabanidae are divided into two divisions, comprising 

 more than thirty genera and over thirteen hundred species. It 

 is only possible to mention here the commonest genera. 



I. Hind tibiae with spurs at the tip ; ocelli in most cases 

 present. Pangoninae. 



1. Hind tibiae without spurs at the tip ; no ocelli (simple 

 £yes). - - Tabaninae. 



>4nlt..M.ii^ Stjltls 



Fig. 91 



I . Pangoninae 

 Genus Pangonia. 



Face and front in ? without tubercles or callosities. 

 Proboscis often long, thin, horizontal. In some, three to 

 four times length of body, piercing, even when the fly is on 

 the wing. Third segment of antenna, eight rings. Species 

 about two hundred and fifty. 



