Charles L. Boulenger 
101 
As in Triodontophorus the bursa has a denticulated margin, the dorsal 
lobe measures about 0-2 mm. in length, the lateral lobes are narrower than 
those of C. longicauda and do not completely embrace the genital cone. The 
external branch of the posterior ray is deeply bifurcated (Text-fig. 2, c). 
The spicules are long (about 1*1 mm.) and rather stout, they have hook¬ 
like terminations recalling those of Triodontophorus. 
Cylindropharynx longicauda Leiper, 1911. 
Four specimens of this species occur in the Nairobi material, two males 
and two females, the former measuring 4-7 and 5*8 mm. in length, the latter 
6-2 and 7 mm. respectively. The greatest breadth of the body is about 
0-45 mm. 
The head has a breadth of 0-14-0-15 mm. The mouth-collar and the leaf- 
crowns resemble those of the type species. 
Fig. 2. Cylindropharynx longicauda Leiper. A. GenitaJ cone of the male. B. External branch 
of the dorsal ray. C. C. brevicauda, external branch of the dorsal ray, x about 125. 
The mouth-capsule is smaller and considerably shorter than that of 
C. brevicauda, measuring 0-18-0-2 mm. in length, with a breadth of 0-07- 
0-09 mm. 
The oesophagus is almost as long as in the type species (0-42-0-45 mm.), 
but much more slender, the greatest breadth being 0-08-0-1 mm. 
Few,ale. In the specimens before me the vulva opens 1-1 and 1-2 mm., 
: the anus 0-28 mm. from the posterior extremity. The tail is long and pointed. 
Male. The bursa is broader than in C. brevicauda, measuring nearly 
0-5 mm. in a lateral view. The lateral lobes enclose the genital cone which is 
shorter and more globular (Text-fig. 2, a) than in that species. Leiper describes 
, the external branch of the posterior ray as undivided, in the Nairobi specimens 
a small branch is given off close to the termination of the ray in the same 
position as the much longer branch of C. brevicauda (Text-fig. 2, b). 
The appendages of the genital cone consist of a single pair of rather stout, 
finger-shaped processes. 
