ODONATA COLLECTED IN LIBERIA AND BELGIAN CONGO 1043 
these parts of the type, given by Ris; he mentions a similar shape for the genital lobe of the Bolobo 
male. Abdominal segments 6-10 are blackish brown; 6 and7 have an elongate, ellipsoidal, tawny 
yellow spot on each side of the dorsum, and a similar, but longer, spot on each side of the venter; 
the ventral surface of 8 is colored similarly to that of 7; there is a less distinct, elongate, tawny 
spot on each side of 9 inferiorly. 
Superior appendages 1.72 mm. long, slightly shorter than the combined length of segments 9 
and 10 (2 mm.), slender and sub-cylindrical in the proximal third, gradually thickening, especially 
on the under side, in the second third, thence gradually tapering to an acute apex; there is a row 
of about five denticles on the inferior surface, in the third fourth of the appendage’s length, the 
last denticle distinctly larger than the others on the right appendage, but not on the left. 
Inferior appendage a very little shorter than the superiors; viewed from below, about .65 mm. 
wide at base, thence gradually narrowing to the truncated apex, which is about .2 mm. wide; in 
profile view, the apex is curved upward and ends in two denticles. (The hind end of the abdomen 
has been obliquely compressed and distorted, hence the absence of figures here.) 
All four wings distinctly pale yellow from base to stigma between the costa and the principal 
sector (M;), remainder of the wings pale smoky brown, more pronounced on the front wings from base 
to triangle inclusive, behind the submedian vein (Cu), especially in the centers of the cells and above 
all in the entire length of the submedian space (cu), which last is a fairly dark brown. Hind wings 
dark brown for their entire width from base to fifth antenodal and distal end of the triangle, and to 
slightly beyond this level in the post-triangular (discoidal) area and in the anal loop, and along the 
hind margin as a narrow band to the end of the first sector of the triangle (Cul); many, but not all, 
of the cells in the anal area in general are paler in their centers. In the coloring of the wings also, 
therefore, this Lulonga male is more like that from Bolobo. Front wings with three rows of post- 
triangular cells to the level of the point of separation of the principal (M,) and median (M3) sectors, 
thence followed by four rows. 
Abdomen 29 mm.; hind wing 35 mm.; stigma of front wing (costal margin) 3.6 mm. 
Trithemis nuptialis Karsch 
Ris, 1912, Cat. Coll. Selys, Libell., p. 787, fig. 449 (genit. male). 
One male, Monrovia, Liberia, abdomen 27 mm., hind wing 29 mm., pteros- 
tigma barely 3 mm., has the frons and vertex metallic violet, no pruinosity on 
thorax or abdomen; abdomen black, segments 2 and 3 with yellowish marks 
on the sides and inferiorly, 4 and 5 unspotted, 6 and 7 with a narrow, longi- 
tudinal, yellow stripe on each side of dorsum, reaching neither base nor apex of 
the segments; wings uncolored, excepting the apices of all very narrowly brown- 
ish and a very minute yellowish tinge in the submedian space (cu) of the hind 
wings, from wing-base to the level of only one-half of the first juxtamembranu- 
lar cell and not bordering the membranule. Front wings with 11 antenodals, 
9-10 postnodals, hind wings with 7-8 and 10-11 respectively. The genital lobe 
of abdominal segment 2 is more like that of 7’. dichroa, as figured by Ris (loc. 
cit., p. 796), than his figure of nwptralis, in that the apical half is more slender 
and its hind margin crenulate, while the hamule also resembles his figure of 
dichroa in its straighter anterior margin and more widely opened inner branch. 
In both of these structures, however, this male approaches the original figure 
of the genitalia of nuptialis published by Karsch in 1894 (Berl. Ent. Zeitschr., 
XXX IX, p. 13): 
One female, Du River, Camp No. 3, Liberia, probably belongs to this species, 
but requires some discussion. Dr. Ris (loc. cit.) says of the female of nuptials: 
‘Von stictica kaum zu unterscheiden und von uns im ganzen nach der Herkunft 
der einen oder andern Form zugeteilt.’”’ His description of stictica gives its 
