8 PROCEEDINGS OF THE NATIONAL MUSEUM vol.75 



minute cervical papilla is found opposite the nerve ring. The excre- 

 tory pore is situated just anterior to the base of the esophagus. 



The bursa is slightly longer than broad, and its comparatively 

 narrow supporting rays, as indicated in the accompanying diagram, 

 are according to the plan characteristic of the genus. A small dor- 

 sal 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 17/i 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 esophagus 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 esophagus where it is reflected backward. The 

 eggs, which become embryonated before oviposition, measure on the 

 average 86m by 45ju. 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. 



T^/^e.— Male and female. Cat. No. 8015, U.S.N.M., Helm. Coll. 



Paratypes. — Male and females. Cat. No. 8016, U.S.N.M., Helm. 

 CoU. 



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 cuticular swelling, (2) the narrow and relatively 

 simple spicules, which are also shorter than in other species, and (3) 

 the smaller eggs. 



NEMATODA 



-'ofc>>- 



Family STRONGYLIDAE 

 COLOBOSTRONGYLUS, new genus. 



Generic diagnosis. — Strongylidae : Comparatively large worms with 

 mouth directed straight forward. Buccal capsule infundibular and 

 with thick walls. An external leaf crown with numerous slender ele- 

 ments and an internal leaf crown of minute elements present. Only 

 the amphids, or so-called lateral papillae, are prominent in the circum- 

 oral region. Cervical papillae very minute or absent. Anterior 

 portion of esophagus bent away from the main axis of the esophagus; 



