114 



microfil arise in Queensland, and found sixty-seven to be in- 

 fected, the percentage of infected birds in the species thus 

 being nearly sixty. He did not give a list of those species 

 in which microfil arias were not found by him. 



Amongst thirteen specimens of introduced birds belong- 

 ing to six species, plasmodia were found in two birds belonging- 

 to one species. 



ADDENDUM. 



A paper entitled "Notes on Blood-parasites" by Gilruth, 

 Sweet, and Dodd has recently appeared in Proc. Roy. Soc. r 

 Victoria, xxiii. (n.s.), pp. 231-241. A Plasmodium (P. 

 biziurce, n. sp.) is described from a musk duck (Biziura lohata) 

 (pp. 231-4), and microfilariae (M. gymnorhince, n. sp.) from a 

 magpie (Gi/mnorhina tibicen) in Victoria (pp. 236-9). We 

 have refrained from attaching names to the microfilariae ex- 

 amined by us, as a name given to the larva becomes the 

 correct specific name for the adult when found, and, more- 

 over, it is not an easy matter to refer a particular larva to a 

 particular adult. It seems to us that the different types of 

 microfilariae in one host may belong to different species of 

 filariidae, and the naming of all the embryos from one host 

 under one name may thus lead to confusion. 



DESCRIPTION OF PLATES. 



Plate XXV. 

 All the figures have been drawn to the same scale. 



Fig. 1. Normal erythrocyte of Pomatorhinus super ciliosus. 



Halteridium, sp., in red cells of P. super ciliosus. 

 Normal erythrocyte of Melithreptus atricapillus. 

 Infected erythrocytes of Melithreptus atricapillus. 

 Normal erythrocyte of Zosterops ccerulescens. 

 Infected erythrocytes of Zosterops ccerulescens. 

 Protozoa ( ?) from blood of Zosterops ccerulescens. 



Plate XXVI. 

 Normal red cell of Myiagra nitida. 

 Infected red cell of Myiagra nitida. 

 Trypanosoma anellobiaz, from Anellobia chrysoptera. 

 Normal erythrocyte of Owl. 



i Infected red cells of Owl. 



Normal erythrocyte of Ptilotis plumula. 

 Infected erythrocytes of Ptilotis plumula. 



2- o. 



6. 



7-10. 



11. 



.. 12-17. 



18-20. 



^ig. 1. 



2- 5. 



„ 6, 11. 



7. 



8-10. 



,, 12-15. 



16. 



„ 17-22 



