27C> 
Intestinal Protozoa in Termites 
tall cone, the posterior or basal part of which is slightly convex. The body 
wall is more or less rigid at the sides, chiefly owing to the character of the 
bands of flagella described below, only the posterior basal part being some¬ 
what metabolic. 
Spiral bands of deeply stained granules, containing the basal granules of 
the flagella—such as are seen in Microspironympha and Holomastigotoides — 
are found over the greater portion of the surface. The number of the bands 
appearing on one side varies from 10 to 20, and their course is rather oblique: 
but this does not represent the true number present, which I have not yet 
succeeded in determining. The disposition of the bands is peculiar in this 
genus: they are not found directly under the periplast, but are situated 
somewhat more deeply in the protoplasm, a portion of the root of each 
flagellum being embedded in it. The above character is especially marked 
at the anterior end, and becomes less distinct towards the posterior; that is 
to say, the basal granules of the flagella lie deeper at the anterior end of the 
body. The flagella are fairly long, measuring 10-16 /x, and run rather sharply 
backwards. The direction of the spiral of the bands is the same as in the 
preceding genus, namely dexiotropic or right-handed; that of the forms 
studied by Grassi is drawn also as right-handed by him. The posterior portion 
of the body is free from any appendages. 
The nucleus is oval, and is found in the middle region of the body. Its 
internal structure is of a type resembling that of Pseudotrichonymphci, con¬ 
sisting of clear and structureless ground substance and chromatic bodies 
arranged in an irregular network or scattered under the nuclear wall and in 
the ground substance. One of the most characteristic features of this form 
is a conical structure at the anterior region of the body, consisting of dense 
and homogeneous protoplasm, and apparently of the same substance as the 
particular protoplasm surrounding the nucleus in Holomastigotoides and 
Microspironympha. It appears most dense in its consistency and most distinct 
in its outline at the anterior part, becoming gradually less dense and less distinct 
towards the posterior. This mass of protoplasm is almost invisible near the 
nucleus, but I think it probable that it there merely becomes thinner, and the 
nucleus is embedded in it. 
As hasbeenpointed out by Grassi (191 land 1917), thegrounds for Hartmann’s 
view that a form closely resembling this was the young of “ Trichonympha 
hertwigP’’ were certainly insufficient. As regards the genetic connexion of his 
“young form” and “male form,” he himself said that all intermediate types 
were not made out—especially as regards the arrangement of the flagella, no 
intermediate forms having been found. As regards the structure of the 
anterior end, he remarked that some intermediate types were observed, but 
neither descriptions nor illustrations of these forms were given in his paper. 
In our organisms, no forms showing characters intermediate between this 
form and Pseudotrichonympha were met with: and as the rows of flagella of 
Spirotrichonympha are in dexiotropic spirals, while those of Pseudotrichonympha 
