THE HAEMATOZOA OF AUSTRALIAN BIRDS. 417 



was present in small amount, either as a few fine grains 

 near the centre, or one end, or as a rounded ball of grains 

 at one end. In the third bird, deep blue granules were con- 

 spicuous, crowded at or near the ends ; and the parasites 

 were elongated, occupying one side and most of the ends of 

 the red cells. Melanin was again scanty in amount, being 

 either in the centre near the nucleus or between it and the 

 end. The special characteristics of this halteridium were 

 the small amount of pigment and the deep blue granules. 



Halteridium of Mieroeca fascinans (M. 433). A series 

 of nine specimens of this bird were obtained from Eidsvold, 

 Q., of which eight, obtained in February, April and May, 

 showed halteridia. In one of these obtained in April, 

 trypanosomes were also present, whilst in two others, 

 peculiar bodies elsewhere described, were present in the 

 leucocytes. The parasites were, as a rule, fairly numer- 

 ous and male and female forms were conspicuous. The 

 melanin appeared as a few small grains or rods. The 

 parasites occupied a large area of the host-cell, occasionally 

 pressing the host-nucleus nearly against the opposite side, 

 thus filling up practically all the available space. In films 

 from two birds, specimens were found in which the parasite 

 occupied one side and one end only of the host-cell. 

 Another parasite, stained a fairly deep blue, showed a 

 rounded nucleus located at one end with a few grains of 

 pigment near it, whilst most of the pigment was located 

 as a ball at the other end. Several oval forms were present 

 in one bird, bulging the host-cell opposite its nucleus. Both 

 blue and pale parasites were noted. 



Halteridium of Petroeca phcenicia (M. 440). In a speci- 

 men of this bird, shot on Mount Kosciusko (at 5,000 feet) 

 in December, 1910, scattered halteridia, containing very 

 little pigment, were seen. This bird is a wanderer, fre- 

 quenting mountainous areas in summer time and plains, 



A 1— Dec. 6, 1911. 



