Among the trichonymphid flagellates inhabiting the gut of Leucotermes tenuis Hagen sent me by Dr. Withycombe from Trinidad is one that I have decided to place in the genus Microspironympha Koidzumi.1

With Plate 7 and 2 Text-figures.

1

The other trichonymphids commonly occurring along with Micros p i r o n y m p h a in this termite are a species of P seudotric hny mpha and a form that I have described as Holomastigotoides hemigym num Grassi (?). See Mackinnon (1926) in the list of references at the end of this paper.

1

As in Holomastigotoides, the ends of the chromosomes have a tendency to be folded back at this stage, which may give the impression of there being more than four.

1

When I published my observations on Holomastigotoideslhad not seen Kirby’s first paper ; my work appeared in April 1926, and Kirby’s second paper in September of that year.

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