112 
Habitus: The body is elongated with its middle part of even 
breadth. The anterior end is rounded, while the posterior is very 
slightly extended, narrowing, and terminally rounded, not pointed. 
The figures 11 —16 on Plate III show the characteristic shape, 
which mostly resembles that of the genus Limnostylochus. Thus it 
decidedly differs from that of the genus Stylochus. However, this 
shape possibly still more resembles the one characteristic for 
Leptoplanidae except for the faet that the post^pharyngeal part is 
shorter and less compressed. This has, of course, a direct connec- 
tion with the considerable elongation of the pharynx. 
For being that of a Styloehid, the body is very thin and the 
consistency is more similar to that of Leptoplanidae than that of 
Stylochidae. 
Tentacular protuberances are present, but are so feebly deve- 
loped that they can hardly be detected even with a lens. Conse- 
quently, the are merely small, barely noticeable swellings. 
Pigmentation and pattern are also lacking on the dorsal side. 
Therefore, the preversed specimens have a whitish colour both on 
the dorsal and the ventral sides. 
The pharynx is mueh more than a half of the entire length of 
the animal and is moved sligthly caudalwards. The pharyngeal 
pocket is very narrow, and has numerous shallow side-pockets 
(Plate III, Fig. 16). The mouth is situated at the border between 
the second and the last third of the body. Thus it is a little in 
back of the beginning of the last third of the pharyngeal pocket. 
(Plate III, Fig. 12). 
Measurements: The longest specimen is 26 mm and its 
greatest breadth is 10 mm. The tentacles are in this case located 
4 mm avay from the anterior edge of the animal and the distance 
between the tentacles is about IV 4 mm. The pharynx is HVs 
mm long. The genital pores are about half way between the mouth 
and the posterior edge of the body; the female gonopore is at a 
distance of 3 V 2 mm from the posterior edge of the body. Thus 
the genital pores lie very close to the pharyngeal pocket, as visible 
in text-fig. 11. The distance between the two pores is not more 
than Vs mm. 
Arrangement of the eyes: Marginal eyes are present only 
in the anterior half of the body. Forming one or two indistinet 
