The President's Address. By II. G. Plimmer. 147 



it can only be differentiated by the presence of the oval nucleus of 

 the bird's erythrocyte. This parasite is of the greatest interest, 

 because it was Eoss's work on it, and his discovery of the rest of 

 the cycle in the mosquito, which enabled him, on account of the 

 likeness between this and the human parasite, to deduce from the 

 one the etiology of the other, which Grassi confirmed. I liave found 

 P. pj'cTcox in 20 different species of birds, in none of which has it 

 been found before. Geographically the distribution of the 21 birds 

 in which I have found this parasite is as follows : Europe, 1 ; Asia, 

 4 ; Africa, 5 ; Americas, 8 ; Australia, 3. It is a deadly disease in 

 birds, and produces a marked anaemia, and considerable enlarge- 

 ment of the spleen, and changes in the bone marrow. 



I have found Plasmodia in six reptiles of five different species, 

 in all for the first time. They all probably fall under the heading 

 of RcTmoci/stidiuni. They all have pigment, and when large have 

 rather the appearance of Hcvmoproteus. The cells are not altered . 



Plasmodia!; Pasasites found in the Blood of Mammals. 



Plasmodium Kochi. 



Habitat. 



Green Monkey — Cercopithecus sabseus Sierra Leone 



Plasmodial Parasites found in the Blood of Birds. 

 Plasmodium Prsecox. 



Long-tailed Glossy Starling — Lamprotornis senaus W. Africa 



Japanese Hawfinch — Coccothraustes melamura Japan 



2 Crowned Cranes — Balearica regulorum S. Africa 



Orange-cheeked Waxbill — Estrelda melpoda W. Africa 



Small-bill Mynah — Gracula religiosa India 



Bed-and-blue Macaw— Ara macao C. America 



Tamboiirine Pigeon — Tympanistria bicolor W. Africa 



Bed-eared Bulbul — Pycnonotus jocosus India 



Nidcracker — Nucifrago caryocatactes Europe 



Yellow-breasted Tanager — Calliste thoracica Brazil 



Blue Sugar-bird — Dacius cayana S. America 



Brazilian Hangnest— Icterus jamaicai Brazil 



Ox Bird — Textor alector W. Africa 



Fly-catcher — Stoparola mela7iops Australia 



Jay-thrush— Garrulax leucolophus N. India 



Mexican Finch — Carpodacus mexicanus Mexico 



Bainbow Bunting — Cyanospiza leclancheri Mexico 



Blue-tailed Fruit Pigeon — Carpophaga concinnus Aru Islands 



Cuban Finch — Phonipara canora Cuba 



Scaly Dove — Scardafella squamosa S. America 



Plasmodial Parasites found in the Blood of Reptiles. 

 Hxmocystidium. 



BclVs Cinixys — Cinixys belliana Africa 



Three-keeled Terrapin — Staurotppus triporcatus B. Honduras 



Painted Terrapin — Chrysemys picta N.America 



Home's Cinixys — Cinixys liomeana W. Africa 



2 Eroded Cinixys — Cinixys erosa W. Africa 



