1042 REPORT OF THE HARVARD AFRICAN EXPEDITION 
abnormal nodus, it is truncated caudad and distad, the posterior caudal angle 
rounded, triangle 4-sided by reason of the anterior and distal sides not meeting 
each other but each of them ending on the lower sector of the arculus (or 6-sided, 
if one considers the broken proximal and distal sides); rudiment of a cross-vein 
projecting into the triangle from its proximal side, which latter lies a little distad 
of the arculus; the two sectors of the triangle nearly normal, but all the venation 
anterior to them and distad of the triangle abnormal and irregular. Our figure, 

Text Fiagure 26. — Acisoma panorpoides ascalaphoides (Rambur), female, 
Monrovia, Liberia. Malformed left hind wing 
drawn by camera lucida and believed to be correct for each cell and veinlet, may 
be compared with Dr. Ris’ figure 290, loc. cit., p. 455, of the normal venation of 
this genus. 
Apparently the only other West African records for this subspecies are those 
from Portuguese Guinea by Martin (Ann. Mus. Civ. Stor. Nat. Genova, XLITI, 
p. 655, 1908) and from Bukama, Belgian Congo, one female, also collected by 
Dr. Bequaert (Ris, loc. cit., p. 1152). 
Trithemis africana (Brauer) 
Ris, 1912, Catal. Coll. Selys, Libell., p. 780, figs. 444 (wings), 445 (genit. male). 
One male, Lulonga, Belgian Congo, December 21, 1926. 
Only two specimens of this species, both males, have thus far been mentioned 
in the literature, the type from Sierra Leone, the other from near Bolobo, Belgian 
Congo. Both of them lack the last three abdominal segments, the type also the 
sixth and seventh. The following notes are, therefore, given from the present 
example. 
Prothorax chiefly brownish yellow, a transverse blackish brown stripe on each side of the 
middle lobe, posterior prolongation of the hind lobe only one-third as wide as the middle lobe, 
convex on its hind margin. Thorax as described by Ris for the Bolobo male, but the blackish 
brown stripe at the metastigma is fused for a very short distance with the posterior branch of the 
fork of the humeral stripe on the right (although not on the left) side of the thorax. The genital 
hamule is not as slender and the genital lobe is much less pointed at the apex than in the figure of 
