510 H. B. FANTHAM. 



long searching of zoological^ medical^ veterinai'y, and even 

 general scientific journals, taking full advantage of the 

 several catalogues of scientific literature now published, and 

 even then allowing a margin for the rapid growth of the 

 literature on this and allied subjects. A full bibliography 

 of Piroplasma canis up to 1904 is given by Nuttall (40), 

 together with references to many papers on other Piroplas- 

 mata. A complete list of papers relating to P. donovani, 

 if it really be a Piroplasma, would also be difficult to 

 compile, and even more diflBcult to collect and read. I 

 only enumerate the more important papers relating to the 

 systematic position of the Leishman-Donovan bodies. Since 

 the intermediate host of P. muris has not yet been deter- 

 mined, I have not given many references to literature on 

 ticks. Nevertheless, I hope that in the following I have not 

 omitted any important papers on Piroplasma, although I 

 have only enumerated the papers more or less directly referred 

 to in the text. 



In conclusion, I would take this opportunity of thanking 

 Professor Minchin for the pleasure and help I have derived 

 from attending his recent course of lectures on the 'Parasitic 

 Protozoa,' which has been of use to me in writing the latter 

 part of this paper, and for general help at all times. 



March, 1906. 



ADDENDUM. 



Since writing the foregoing, there have appeared impor- 

 tant works on Piroplasma by Liihe (33a, 33b), wherein 

 the generic name of Babesia is preferred (see my footnote, 

 p. 504). Having worked recently on P. canis, the largest 

 species of Piroplasma, under a magnification of 3000 dia- 

 meters, Liihe states that the pyriform trophozoites only are 

 endoglobular, and that, in addition to the " principal 

 nucleus," there is a small clu'omatic dot nearer the pointed 

 end comparable to the blepharoplast of a Trypanosomo (cf. 



