A. Porter 
•23 
views of the Recorder should be allowed access at all. I beg leave to 
bring this 2 ^i'ocedure to the notice of the authorities responsible for the 
issue of the International Catalogue. 
I am not aware that Dr Woodcock has ever published any original 
observations on species of Crithidia or Herpetomonas. It will be 
remembered that Dr Woodcock was the author of a recent article on 
the Haemoflagellates (1909) which was much criticised at the time of 
its appearance. It is quite unnecessary to refer further to this matter. 
Also, I am aware that Dr Woodcock has quite recently (Nov. 1910) 
published a very lengthy paper on “ Studies on Avian Haemoprotozoa,” 
wherein (p. 713) he suggests, but does not prove, that Crithidia 
melophagia is “simply a developmental phase of a sheep trypanosome 
in its alternate, insectan host.” It remains for Dr Woodcock to prove 
this statement experimentally. He will find the researches of Flu, 
Swingle and Porter directly opposed to his view. Surely he is aware 
that Crithidia and Herpetomonas have been described from water-bugs 
and certain flies which are not bloodsuckers. 
Finally, may I again be permitted to state that it is out of place 
for the Recorder to insert his personal opinions in an International 
Catalogue of Scientific Literature, more especially when his opinions 
are extreme and decidedly opposed to the opinions of those who have 
worked personally on the parasites in question. 
REFERENCES. 
Woodcock, H. M. (1910). “Protozoa,” Zoological Record, xlvi. for 1909 ( = Internal. 
Catal. Sci. Lit., N, 9th Annual Issue). See pp. 39, 42, 43, 60. 
-(1910). Studies on Avian Haemoprotozoa. I. On certain parasites of the 
Chaffinch {Fringilla coelebs) and the Redpoll [Linota rufescens). Quart. Journ. 
Microsc. Sci. lv. pp. 641-740. 5 Pis. 
