Palpi three white bands. Markings vary according to 

 season. Larva : frontal hairs simple. Antennae have 

 no spine. Egg-floats do not meet in middle. Sporo- 

 zoits found in this species by Patton. Arabia. 



10. A. dtbali. Costa, four black spots, the basal 

 the longest. First long vein four black spots, other 

 veins pale. Wing fringe, no spots. Palpi, pale with 

 two white bands. Larva : frontal hairs simple. 

 Antennae have a spine. Egg-floats almost meet in 

 middle. Arabia. 



aaaa. Wings unspotted, legs unhanded, thorax with 

 abnormal 'pattern. 



n. A. corethroides. Resembles A. bifurcatus, but 

 differs in (a) thorax being pale brown with a large 

 median anterior dark area, and a long lateral dark 

 area behind this as in Corethra. S. Queensland. 



12. A. bifurcatus * Abdomen with golden hairs, 

 thorax with two broad bare lines in front. Europe. 



13. A. algeriensis* Abdomen with brown hairs, 

 lateral scales of veins longer and finer than in A. bifur- 

 catus. Anterior and posterior cross veins in same line 

 in both sexes. In A. bifurcatus the posterior is internal 

 in ? , the anterior in $ . Africa. 



14. A. barberi. Differs from previous two in 

 having stalk of first fork cell equal to instead of greater 

 than one-third length of cell. The larva lives in holes 

 in trees. Maryland, U.S.A. 



aaaaa. Wings unspotted, legs unhanded, thorax with 

 normal pattern, second fork cell exceeds half 

 length of the first, palpi banded. 



15. A. smithi. Wing scales very dense. Sierra 

 Leone. 



Transmits malaria. 



