710 



ORDEE: DIPLOMONADIDA 



experience English cats are commonly infected. Hegner (1924) has seen 

 cysts in the faeces of a wild cat, Lynxruffus. They measured 11-01 to 13-55 

 microns by 6-57 to 8-47 microns. Fantham (1923) gave the name G. suri- 

 catcB to a form in the meercat, Suricata tetradactyla. Deschiens (1925a) 

 has seen cyst of a species of Giardia in the fseces of two lions. 



G. bovis Fantham, 1921, and G. equi Fantham, 1921.— These forms 

 were recorded without details by Fantham, from the ox and horse in 

 South Africa. Later (1923) he states that G. equi measures 20 by 10 

 microns, and the cysts 12 to 15 by 9-2 microns, and (1925) that the cysts 

 of G. bovis measure 11 to 11"5 by 7 microns. Nieschulz (1923) found cysts 

 of Giardia measuring 10 by 5-2 microns in the faeces of a calf in Holland. 



G. caprae Nieschulz, 1923. — This form was discovered by Nieschulz 

 (19236, 19246') in the goat in Holland. The free forms measured 9 to 17 



by 6 to 9 microns. Cysts measur- 

 ing 12 to 15 by 7 to 9 microns were 

 also seen. 



Hegner (1924) has seen the 

 cysts of Giardia in the faeces of a 

 monkey, Atelus geoffroyi. The 

 measurements given are: length, 

 11-01 to 14-40 microns; breadth, 

 6-77 to 9-31 microns. It is stated 

 that they are obviously different 

 from the cysts of the human para- 

 site. The writer has seen cysts 

 of Giardia in a young monkey 

 (Cercopithecus) from West Africa. 

 G. sanguinis (Gonder, 1910).— 

 As pointed out above, this form 

 was found by Gonder in the 

 blood-films of a falcon shot in 

 the Transvaal. In view of the fact 

 that blood-films made from birds 

 which have been shot frequently 

 show contamination with intes- 

 tinal organisms, there is little 

 doubt that Gonder was dealing 

 with an intestinal form which had contaminated the blood through the 

 wounded intestine. Noller (19206) described as G. ardew an intestinal 

 form from the herons, Ardetta miniita and Ardea cinerea. Kotlan (1922) 

 has recorded Giardia from a shrike {Lanius coUurio) and an avocet 

 (Recurvirostra avocetta), while Rudovsky (1923) has found one in a buzzard. 



Fig. 298. — Giardia agilis OF the Tadpole 

 ( X 4,300). (After Hegner, 1922.) 



