M. Koidzumi 
275 
Hartmann’s statements regarding the division processes of the Brazilian 
species appear very doubtful to me. Basing his opinion upon a small amount 
of material, he concluded that both amitosis and mitosis may occur. As for 
the latter, he figures several stages interpreted as prophases, in which chro¬ 
matin granules are distributed in the nuclear sap in the form of irregular 
threads. They differ strikingly from the prophases of mitosis in our forms. 
As for the amitosis, he described two stages, one interpreted by him as an 
early stage, and the other as a young form just after division. Specimens 
with the nucleus of the same type as that interpreted by him as an early 
stage of mitosis are frequently met with in our species; but these are merely 
forms with resting nuclei of a special type, as mentioned above, and have 
nothing to do with division. The forms interpreted by him as the young have 
a structure so remarkably different from the parental form, that no one can 
recognize their genetic connexion, in the absence of intermediate forms. 
Hartmann, however, neither discovered any forms showing an intermediate 
structure nor gave any evidence to indicate their genetic connexion. I have 
failed to find any forms with a similar organization in the Japanese termites. 
VI. Spirotrichonym'phci. 
The genus Spirotrichonympha was introduced by Grassi (1911) for the 
flagellate originally wrongly referred by him (1892, 1893) to Leidy’s genus 
Pyrsonympha. The type species of this genus is Sp. flagellata, described by 
Grassi in his work with Sandias (1893). It has since been renamed Leidya 
metchnikovi by Fran<?a (1916). (See Fran 9 a, 1918, and Grassi, 1917.) In his 
recent work, Grassi (1917) distinguishes three species of this genus; one of 
them with two varieties. These are Sp. mirabilis (in Porotermes adamsoni 
from Australia), Sp. flagellata var. schedorhinotermitis intermedii (in Schedo- 
rhinotermes intermedins from Australia), Sp. flagellata var. coptotermitis lactei 
(in Coptotermes lacteus from Australia), and Sp. elongata (in Schedorhinotermes 
intermedins). In my former paper (1917), I described an organism harboured 
by Coptotermes for mosanus under the name of Cononympha leidyi , establishing 
a new genus for it, because I could not identify it as a species of Spirotricho- 
nympha, the characters of which genus were given very briefly in Grassi’s 
work of 1911. But his recent work made me clearly understand that my 
organism belongs to this genus. The Japanese species appears to differ, 
however, from all species reported. 
Spirotrichonympha leidyi sp. nov. (Plate XIII, figs. 41 and 42). 
This is the smallest of the forms found in Coptotermes formosanus , and 
measures 15-50 p in length and 8-30 p in breadth; that is to say, the largest 
individuals hardly exceed in size the smallest forms of most other species found 
associated with them. This organism is also clearly distinguishable by its 
shape from the other forms in the same host. It has usually the shape of a 
18—2 
