22 
SOME REMAEKS ON THE GENERA CRITHIDIA, 
HERPETOMONAS AND TRYPANOSOMA. 
By ANNIE PORTEB, D.Sc., Bond. 
Quick Laboratory, Cambridge, and University College, London. 
In this brief note it is not my intention to enter into detailed 
criticism, but merely to express my surprise and that of other proto¬ 
zoologists, that the personal opinions of the Recorder should be allowed 
insertion in the Zoological Record (1909) which is also the International 
Catalogue of Zoological Scientific Literature. Against this procedure 
I beg to record an emphatic protest. 
The facts are as follows: On page 60 of the Division Protozoa of 
the Zoological Record (International Catalogue) we find “ Crithidia ” 
hystricliopsyllae, Mackinnon; “(7.” melophagi, Swingle'; “G." nycterihiae, 
Chatton; “C.” simidiae, Georgewitch; “G.” tabani, Patton, all described 
as “parasites [which] are most probabl}^ really trypanomonad phases of 
a Trypanosome.” 
Again, on the same page we find “ Herpetomonas” ctenophthalmi 
Mackinnon described as “ probably really a phase of a Trypanosome,” 
and on page 42 as “ probably really Trypanosome phases from the 
mole.” The inverted commas enclosing the generic names Grithidia 
and Herjoetomonas are those of the Recorder, Dr H. M. Woodcock. 
At the present time there is not a particle of definite evidence that 
any of the above-mentioned flagellates (species of Grithidia and 
Herpetomonas) are developmental phases of a Trypanosome. Before 
making remarks in an International Catalogue, the Recorder should 
bring forward evidence in support of his statements, and it should be 
unnecessary to remind him that caution in making or even suggesting 
general statements is one of the marks of the exact thinker. In¬ 
cidentally, it is rather extraordinary that in a Catalogue the personal 
