The Spilocuscus maculatus minor is a small animal dwelling island of Manus and belongs to carnivorous suborder of placentalia. We dissected an adult, male Cuscus of 2 yars old died from marasmus and ulci in radix of tail and palmus of legs, etc, . Clinical findings showed the diarrhoea and depression of appetite and died with spasm of legs. The results obtained were as follows ; 1) Marasmus. 2) Ulci in radix of tail, palmus of legs and lower abdominal wall. 3) Eczema in perineum, glabella and lateral part of neck. 4) Hemorrhage or softning in central nervous system. 5) Degeneration of nervous cells and nervous fibers in central nervous system. 6) Stagnation, bleedings and small foci of necrosis in liver. 7) Gromerulonephritis and haematuria. 8) Catarrh in stomach and intestine. 9) Oedema in lungs. 10) Heamorrhage in heart. 11) Stagnation and bleedings in spleen. 12) Anisocolis. 13) Cicatrigation in conjunctiva. 14) Microbiologically, blastomyces-like organismus were cultivated from lesion of ulcer in radix of tail. 15) There were micro-histologically blastomyces-like micro-organismus in subdral parts, medulla, subependimal parts of encephalon and liver.
