Isospora geospizae, a new coccidian parasite (Apicomplexa: Eimeriidae) from the small ground finch (Geospiza fuliginosa) and the medium ground finch (Geospiza fortis) from the Galapagos Islands. Systematic Parasitology, 14(2) 1989: 141-144. 142 [Zoological Record Volume 126]