468 REPORT OF THE HARVARD AFRICAN EXPEDITION 
Family TRICHOSTRONGYLIDAE 
OSWALDOCRUZIA AGAMAE, new species 
Specific diagnosis. Oswaldocruzia. 
Male. Length 7.4 mm.; greatest breadth 0.15 mm. near middle of body 
from which point there is a gradual tapering toward the anterior end, where the 
body is 0.03 mm. wide. The head is rounded and bears four inconspicuous oral 
papillae and two amphids. The cephalic cuticle is inflated for a distance of about 
35u. The only occurrence of striae on the cuticle is for a short distance behind 
the cephalic inflation, the cephalic cuticle itself being as devoid of striae as the 
remainder of the body. The oesophagus is 0.84 mm. long, claviform, and en- 
circled by the nerve ring, slightly anterior to its middle. A minute cervical 
papilla is found opposite the nerve ring. The excretory pore is situated just 
anterior to the base of the oesophagus. 
The bursa is slightly longer than broad, and its comparatively narrow sup- 
porting rays, as indicated in the accompanying diagram, are according to the 
plan characteristic of the genus. A small dorsal lobe is easily distinguishable. 
The dorsal ray bifurcates near its end, and each branch is split into three rather 
minute digitations. The spicules are of a light yellow color. They measure 
about 0.175 mm. in length, and at their broadest point, near the anterior end, 
measure 17u wide. They are very slightly ridged, not spirally fluted, and their 
termini are adorned with a few inconspicuous processes. Gubernaculum absent. 
Female. Length from 11.5 to 12 mm.; greatest breadth 0.19 mm. The 
oesophagus is 0.55 mm. long and the cephalic inflation measures about 0.05 mm. 
in length. The vulva is situated 7 mm. from the anterior end, dividing the body 
in the ratio of 3:2. The uteri are divergent, and the anterior ovary extends 
forward almost to the level of the base of the oesophagus where it is reflected 
backward. The eggs, which become embryonated before oviposition, measure 
on the average 86u by 45u. The body of the female tapers gradually to end in a 
conoid tail to which a fine acicular process is appended. 
Host. Agama colonorum. 
Location. Intestine. 
Locality. Du River, Liberia. 
Type. Male and female, Cat. No. 8015, U.S.N.M., Helm. Coll. 
Paratypes. Male and females, Cat. No. 8016, U.S.N.M., Helm. Coll. 
The species described above, which appears to be the first member of the 
genus described from an African reptile, may be differentiated from previously 
described members of the genus on the basis of (1) its unstriated cephalic cuti- 
cular swelling, (2) the narrow and relatively simple spicules, which are also shorter 
than in other species, and (3) the smaller eggs. 
