1. Allomorphosis is studied on the relation between the body length at sexual maturity of the females and the body length at birth for 15 species of cetacea. 2. The allomorphosis shows one unit monophasic allometry in ODONTOCETI. 3. The allomorphosis of MYSTACOCETI differs from that of ODONTOCETI. 4. Among MYSTACOCETI, four species of the genus Balaenoptera follow one allometry line. However, Megaptera, Eschrichtius and Eubalaena are distributed between allometries of ODONTOCETI and Balaenoptera. 5. The following allometry formulas are obtained between the body length at sexual maturity of the females (LM, m) and the body length at birth (LB, m) :
Balaenoptera : L_B=0.420 L_M^0.900
MYSTACOCETI : L_B=0.488 L_M^0.866
ODONTOCETI : L_B=0.532 L_M^0.916
6. Allomorphosis between the two body lengths all show negative growth, and the smaller the species, the higher is the sexual maturity of the females.

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From May to December, in 1964, the author has studied the Japanese serow, Capricornis crispus crispus (TEMMINCK) having been kept in captivity for nine years in Omachi Alpine Museum, Nagano Pref.. This specimen was reared in a cage (933m²) which is covered by secondary forest trees (Quercus acutissima, Pinus densiflora, Prunes verecunda etc.) . During resting, the serow prefers a wide open and comparatively dry area. Rest by sitting down and by standing is performed at nearly regular times through every month, although this behaviour is influenced by the weather.Downsitting hours are twice the standing ones. Rumination hours in sitting down increase from spring to summer or autumn. It seems due to the character of food given. Standing rumination is also done, but for a very short time. Sleeping hours indicate the lowest during September, October, and November. It seems to be related to the mating season in natural habitats. Movement distance and hours decrease from spring to summer and increase from autumn to winter. In October, November, and December, the running movement was observed. It also seems to be connected with the mating season. Urination place is inconstant, the defecation place is however constant. Which can not be seen through.

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