THE HAEMATOZOA OF AUSTRALIAN BIRDS. 431 



the anterior region being a little wider (4 /x) than the 

 remaining portion, which gradually tapered to end in a 

 sharply-pointed tail. In some specimens there was also a 

 narrowing anteriorly, the rounded head end being not quite 

 as wide as the succeeding portion. No distinct " spots" 

 were recognisable, nor were annulations detected. 



The parasites present in a film made by Mr. Launcelot 

 Harrison from a specimen shot near Gladstone stained 

 rather better. They were slightly longer (68 to 100 /*) and 

 showed the presence of annulations. The anterior clear 

 area was larger than that seen in the Burnett River speci- 

 mens. The forms from both districts were of the same 

 shape and probably belong to the same species of nematode. 

 The spots were situated at about 25 to 28, 34 to 38, and 80 

 per cent, of the body length respectively. (Figs. 38, 39.) 



(4) Microfilaria sp. from the Frogmouth, Podargus stri- 



goicles, Lath. (Dr. Bancroft, Eidsvold, Dec. 1910). 



Length 90 to 100 /*, breadth about 5 /*. The parasites 

 were relatively short and thick, with a rounded anterior 

 end and a short rapidly-tapering tail. Delicate transverse 

 markings were present. The spots lay at about 27, 53 and 

 80 per cent, of the body length distant from the head end. 

 (Figs. 53, 54). 



(5) Microfilaria sp. from the Roller, Eur y stomas pacificus. 



Lath. (Dr. Bancroft, Eidsvold, Dec. 1910). 



Length 130 /^, breadth 3*5 ft. The head end was slightly 

 rounded, the posterior end tapering to a fine point. The 

 specimens did not allow of further examination. (Fig. 59.) 



(6) Microfilaria sp. from the Coachwhip, Psophodes crepi- 



tans, Vig. and Horsf. (Dr. Bancroft, Eidsvold, April 

 1911). 



Length 200 /*, breadth 5 /*. Very few specimens of this 

 large Microfilaria were detected. The worms stained fairly 



