THE HAEMATOZOA OF AUSTRALIAN BIRDS. 4 23 



the flagellum, surrounded by the undulating membrane, 

 arose and wound round the body to end in a short free 

 flagellum. 



In addition, two pale oval bodies, about the size of the 

 red corpuscles of the host, were seen with a small purple 

 dot near one end : no macronucleus was detected : in one 

 specimen was a short t apering ' tail.' The bodies suggested 

 small phases of a trypanosome. 



No intracorpuscular bodies were seen in this specimen, 

 though in one out of seven birds obtained in April, one of 

 these bodies, embayed in the nucleus, was noted ; this bird 

 had halteridia as well. Another of these seven birds showed 

 bodies which probably also were intracorpuscular trypano- 

 somes. In two May specimens filarial alone were found. 



Intracorpuscular Trypanosomes of Myzomela sanguineo- 

 lenta (M. 746). In three out of four specimens of this bird 

 obtained at Eidsvold in June, intracorpuscular trypanosomes 

 were present. One of these also contained halteridia and 

 filarise. Pale and deep blue forms were present. 



Free and Intracorpuscular Trypanosomes of Ptilotis 

 fusca (M. 769). Of nine birds of this species shot at 

 Eidsvold in March, one showed free trypanosomes alone, 

 four showed free and intracorpuscular forms, in three, intra- 

 corpuscular forms alone were detected, while in one no 

 trypanosomes but a few halteridia were seen. In an April 

 bird, intracorpuscular trypanosomes and halteridia were 

 present. The free trypanosomes varied from moderately 

 narrow, through a fusiform shape, to broad forms. The 

 macronucleus was a little in front of tiie centre. The 

 micronucleus was in some specimens close to the posterior 

 end, in others decidedly further forward. The undulating 

 membrane wound round the body, ending in a moderately 

 short flagellum. The protoplasm took a deepish blue colour 

 and corresponded in this and in its appearance to that of 



