THE PROTOZOA PARASITIC IN ARCHOTERMOPSIS WROUGHTONI 259 
mann is larger than P. pristina, measuring 760-330» by 
60-40 », and in shape it is more elongated, with well-defined 
ectoplasm and endoplasm, the latter divided into internal and 
external zones. As in P. pristina the body is traversed 
with longitudinal ridges from which the flagella takes origin, 
but basal granules are not definitely described, though Hart- 
mann thinks that they may occur. The chief point of differ- 
ence, however, is the centroblepharoplast. In Hartmann’s 
organism it is composed of three distinct regions : (a) a eylin- 
drical tube starting in the ectoplasm and extending to the 
endoplasm ; (b) cap, covering the tube; (c¢) a second semi- 
circular cap covermg the whole of the anterior ectoplasm. 
Hartmann suggests that the cap represents the true blepharo- 
plast, and that the tube is formed of fused basal granules. 
Obviously this ‘ Kopforgan’ is of a more complicated structure 
than its homologue in P. pristina, and the location of the 
basal granules in the ectoplasm and not in ‘the tube’ in this 
latter organism indicates that Hartmann’s suggestion as to the 
origin of the ‘ tube’ is not correct. Grassi’s latest description 
of the Pseudotrichonympha is as follows: ‘ Body 
much elongated and sharpened, with the flagella extending 
over the whole of the body, leaving the posterior region naked. 
The striations from which the flagella arise are seen running 
longitudinally. The nucleus is found in various positions of 
the body, and in its * resting ’ stage is composed of a membrane, 
peripheral clear zone, and a central mass. The food, consisting 
of wood, is not limited to the posterior region of the body, but 
is sometimes found in the region of the ‘ mamella ”’. 
‘The four rods, characteristic of the suspension of the 
nucleus in Trichonympha, are not found, and _ con- 
sequently the position of the nucleus is not fixed.’ 
Grassi distinguishes four species, P. hertwigi var. minor 
in Coptotermes Sjosteddi, P. hertwigi var. 
major in Coptotermes lacteus, P. magnipapil- 
losa nSchedorhinotermes putorius, and P. par- 
ripapillosa in 8.intermedius. 
The above is sufficient to show that the organism described 
NO. 258 i 
