128 MR. H. G. PLIMMEK ON 



birds were acute. The great majority of the cases were of 

 varying degrees of chronicity and were associated with other 

 old-age changes. 



16. These cases of cancer occurred as follows : — epithelioma of 

 neck in a Wolf and in a Gerbille ; cancer of liver and glands in 

 a Bear, and of pancreas in a Marmot. 



17. Of the sarcomata, one was in the testis of an old Dingo, 

 another, an angiosarcoma, in the liver of a Barbary Sheep, and 

 the third, an adeno-sarcoma, in the kidney of an Ouakari. 



18. Under the term malaria are grouped 12 cases due to 

 Hmnoproteus danileioskyi and 3 due to Plasmodhom prcecox : see 

 section on blood -parasites below. 



19. 20, 21, 22. See the section on blood -parasites below. 



23. The number of cases of atheroma indicates that a large 

 number of old birds have died. 



24. One case in an Otter, the other in a Wallaby. Both were 

 uric acid calculi. 



25. The number of rickety animals in the Gardens has greatly 

 decreased. 



Blood-Parasites. 



During the year the blood of every animal which died has been 

 examined, with the result that parasites have been found in 70 ; 

 in 30 species for the first time. 



They have been distributed as follows : — 



Filarice. In 5 mammals ; in 3 species for the first time. 

 19 birds; in 6 species for the first time. 

 3 reptiles; in 3 species for the first time. 

 Trypanosomes. In 2 birds ; in both for the first time. 

 1 reptile. 

 f Hcemoproteus danilewshyi. In 12 birds; in 8 species 

 I for the first time. 



aria. <; pi asmoc n um prcecox. In 3 birds; in all for the 

 I first time. 



Leucocytozoa. In 3 birds ; in 2 species for the first time. 

 Toxoplasma. In 1 mammal and 1 bird ; in both for the first 



time. 

 Babesia. In 1 mammal. 



Hcemogregarines. In 19 reptiles; in 3 species for the first 

 time. 



The following Tables show the occurrence of the blood-parasites 

 in detail : — 



Embryo Filarial found in the blood of Mammals. 



Habitat. Type. 



TPound in the following for the first time: 



2 Squirrel Monkeys (Saimiris sciurea) ... Brazil. Long, thin. 



2 Canadian Porcupines (Erithizon dor- N. America. Long, pointed. 



satiis). 



Marmoset (Leontocebus myvtcut) S. America. Long. 



