BYT. H. JOHNSTON AND J. B. CLELAND. 487 



The parasite in question is seen to be markedly different 

 from //. pseudechis from the allied species of snake, Pseudechis 

 pofphyriacus. 



H^MOGREGARiNA (Karyolysus) hinuli^ Jnstn. ifc Clel. 



This protozoon has again been detected in Lygosoma (Hinu- 

 lia) quoyi, the lizard being found in the Sydney district. 



H^mogkegarina (Karyolysus) pseudechis Jnstn. 

 (Plate XV., figs. 1-5.) 



A black snake, Pseudechis porphyriacus, killed on Milson 

 Island, in the Hawkesbury River, was found to be parasitised 

 by the above-named haematozoon. Most of the forms detected 

 were longer and thinner than those previously figiu'ed(John- 

 ston, 1909, p. 406). 



H^MOGREGARiNA SHATTOCKi Samb. & Selig. 



Films taken from a carpet-snake, Python variegatus, in 

 October, 1910, and from another, in February, 1911, by Dr. 

 T. L. Bancroft, who captured these animals on the Burnett 

 River, showed the presence of hgemogregarines belonging to 

 the above-named species (Johnston, 1909, p. 402). Another 

 haematozoon, H. {Karyolysus) megalocystis, has recently been 

 described from this host in Victoria (Gilruth, Sweet, and 

 Dodd, 1910, p. 683). 



H.«;mogregarina varanicola Jnstn. & Clel. 



(Plate xvi., figs. 11-20). 



We have seen this parasite in films taken from three speci- 

 mens of Varanus varius by Dr. T. L. Bancroft, in October, 

 November, and December, 1910, in the Burnett River dis- 

 trict. The characters of the haemogregarine were similar to 

 those already described by us (1910, p. 683; Gilruth, 1910, 

 p. 36). A goodly number of haemogregarines have been 



