BY T. HARVEY JOHNSTON, M.A., D.SC. 235 



2. Python spilotes var. variegata, Gray (syn. Morelia 



variegata). The Carpet snake. 



Unlike P. spilotes, this reptile has a very wide range 



over AustraUa. 



a i., Hcemogregarina shattocki. Sambon & Seligmann. 

 Johnston, 1909 b, p. 403; 1910 6, p. 42 (Enoggera, 

 Brisbane) ; Johnston & Cleland, 1911 a, p. 487 

 (Burnett River). 



ii., Hcemogregarina morelice, Johnston, 1909 h, p. 404 ; 

 1910 h, p. 43 (Abrolhos, West AustraUa). 



iii., Hcemogregarina megalocystis, Gilruth, Sweet and 

 Dodd, 1910, p. 234 (Victoria). 



H. megalocystis is very like H. hancrofti from Pseudechis 

 mustralis and P. mortonensis {vide infra), in regard to its 

 detrimental effect on the parasitised erythrocyte. The 

 other two haemogregarines wiU be referred to again {vide 

 infra). 



b i , Bothridium pythonis, Blainville — Johnston, 1910 



d, p. 28 (N. S. Wales), 

 ii. Sparganum sp. in subcutaneous tissues (Hawkes- 



bury River). 

 d Ascaris sp., Krefft, 1871, p. 214. Occurs also in 

 Python spilotes. j 



3. Python amethystinus, Schn. 



a Hcemogregarina amethystina, Johnston, 1909 a, p. 

 257; 1910 b, p. 42. (Port Curtis, Queensland.) 



As a result of having examined haemogregarines from 

 a considerable number of reptiles, it has become evident 

 to me that these haematozoa vary a good deal in form and 

 size. I now regard H. amethystina, H. moreliae, H. shattocki 

 (from Australian pythons) and H. pococki, Sambon (from 

 Python molurus) as being identical, and that they are all 

 (as Dobell suggests in the case of Sambon's forms) synony- 

 mous with H. pythonis (Billet) Labbe. We cannot agree 

 entirely with Dobell' s suggestion that the generic name 

 of the host might be added as a temporary specific name. 

 We have adopted this method where convenient, but we 

 have met with cases where this would be inappHcable. 

 For example from species of Pseudechis, we have described 

 two haemogregarines differing widely in regard to their 



