420 J. B. CLELAND AND T. H. JOHNSTON. 



Halteridium of Tropidorhynchus comiculatus (M. 818). 

 We have already described 1 the halteridium present in this 

 bird as H. philemon. We have found it in a bird shot at 

 Eidsvold, Q., in March, which extends its geographical 

 distribution from New South Wales to Queensland. 



Halteridium of Oriolus Sagittarius (M. 850). Halteridia 

 were found in three of these birds obtained at Eidsvold in 

 January, March and April. They contained moderately- 

 sized scattered melanin granules. In two of these birds, 

 'intracorpuscular trypanosomes' were also present, in one 

 of the two, free trypanosomes as well : the third bird had 

 fllarise. 



Trypanosomes in Australian Birds. 



In our previous paper we described the presence of try- 

 panosomes, which we called T. anellobice, in the honey- 

 eater Anellobia chrysoptera, the birds being obtained by 

 Dr. T. L. Bancroft in Queensland. A further study of 

 films from some of these birds, together with a series of 

 specimens from other birds shot near Eidsvold, Q., also 

 forwarded by Dr. Bancroft, has shown us a phase of these 

 trypanosomes that we had previously overlooked. This 

 consists in an intracorpuscular stage, the organism being 

 a parasite (Leucocytozoon ?) of the red corpuscles. That 

 these intracorpuscular bodies are really stages of a trypano- 

 some, we think there can be no doubt. Not only is their 

 body protoplasm stained in exactly the same way as that 

 of free trypanosomes present in some of the films, but the 

 macronucleus is also similar, and in a few favourable 

 examples, the micronucleus has also been visible. It may 

 be well, first of all, to describe the free and encysted forms 

 in general. 



The free trypanosomes varied in form, some being very 

 broad and others extremely narrow. Though the parasites 



1 This Journal, 1909. 



