1044 REPORT OF THE HARVARD AFRICAN EXPEDITION 
“ Unterlippe hellgelb; Oberlippe gelb, in der Mitte schmal bis ziemlich breit 
schwarz....Stirn gelb mit breiter, schwarzer, blaumetallischer Basislinie. 
Scheitelblase gelb.”’ In all of these parts the present female differs, but agrees 
with Ris’ description of nuptialis, male, viz.: ‘Unterlippe in der Mitte schwarz, 
die Seiten ziemlich breit bis sehr schmal gelb. Oberlippe schwarz. ... Stirn 
und Scheitelblase glinzend blauviolett.”’ It does, however, agree with Ris’ 
description of the thorax and abdomen of stictica female. The wings are almost 
colorless except for a diffuse pale brown edging at the apices and a mere trace 
of yellow at the bases, which, on the hind pair, does not reach even halfway to 
the submedian cross-vein (cuq) and is much smaller on the front pair. Abdomen, 
24 mm.; hind wing, 29 mm.; stigma of front wing, costal margin, 3.27 mm. 
Trithemis arteriosa (Burmeister) 
One male, Gbanga, Liberia, September 1926. Midges of the subfamily 
Ceratopogoninae were found by Dr. J. Bequaert attached to the wings of this 
specimen. (See page 846.) 
A widely distributed species throughout Africa, from Algeria to Natal, also 
known from Syria, the Canary Islands, Socotra, and the Comoro Islands. 
