i57 
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. dthali. 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 unbanded , thorax with 
abnormal pattern. 
11. 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. bifur catus A —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 unbanded , 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. 
