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



often far away, in winter. The locality of infection is not 

 necessarily that where the bird was shot. 



Halteridium of Grallina plcaba (M. 646). Halteridia 

 were found in one bird out of three obtained at Eidsvold, 

 Q. The affected subject was obtained in April. There 

 was a very heavy infection of the red cells, reaching ten or 

 more per cent. The grains of melanin were small ; many 

 of the parasites were of an elongated oval shape, others 

 typical halter forms. 



Halteridium of Aphelocephala leucopsis (M. 689). This 

 bird was obtained on the Murray Flats, 14 miles west of 

 Blanchetown in South Australia, in May, L911. In the red 

 cells, halteridia were detected. The melanin appeared as 

 large rods or granules. There were many rounded pale or 

 deeper blue forms. 



Halteridium of Zosterops ccerulescens (M. 712). In our 

 previous communication, we have already recorded the 

 occurrence of halteridia in birds of this species obtained in 

 Sydney. We have now to record its presence in a bird 

 obtained at Adelaide in May, and at Eidsvold, Q., in April 

 1911. Deep blue and pale forms were present. The para- 

 sites occupied one side and most of the ends of the host- 

 cells. The melanin appeared as small rods and granules. 



Halteridium of Pardalotus melanocephalus (M. 729). 

 Fairly numerous halteridia were present in six out of ten 

 (numerous in four) of these birds obtained in April at 

 Eidsvold, Q. Trypanosomes, but no halteridia, were present 

 in a bird taken in March, and nlariae, but no halteridia, in 

 a specimen shot in May. The parasites were large, occu- 

 pying one side and nearly all the ends of the host-cells. 

 Melanin appeared as a few large grains near the centre or 

 towards one end. The forms were deep blue or pale blue, 

 some being almost colourless. In a bird taken in March, 

 halteridia alone were found, while in two shot in May no 



