Vol. 36, No. 4 October 1995

Kuester, Jutta; Paul, Andreas; Arnemann, Joachim: Age-related and Individual Differences of Reproductive Success in Male and Female Barbary Macaques (Macaca sylvanus )..........461 Key Words: Barbary macaque, DNA-fingerprinting, Paternity, Age, Reproductive success.

Hashimoto, Chie: Population Census of the Chimpanzees in the Kalinzu Forest, Uganda: Comparison Between Methods with Nest Counts..........477 Key Words: Chimpanzee, Population census, Nest count, The Kalinzu Forest, Uganda.

Yamakoshi, Gen; Sugiyama, Yukimaru: Pestle-pounding Behavior of Wild Chimpanzees at Bossou, Guinea: A Newly Observed Tool-using Behavior..........489 Key Words: Chimpanzee, Pestle-pounding, Oil-palm, Tool use, Nutritional compensation.

Forster, F. C.: Explaratory Behavior and Learning in Lavoratory Marmosets (Callithrix jacchus jacchus ): Comparisons Between Experimental-cage and Home-cage Activity..........501 Key Words: Common marmoset, Exploration, Learning, Novelty.

Nicholson, India S;,Gould, Jay E.: Mirror Mediated Object Discremination and Self-directed Behavior in a Female Gorilla..........515 Key Words: Mirror mediated object discrimination, Self-directed behavior, Captive gorilla, Mirror use.

Senturia, Sam J.: Morphometry and Allometry of the Primate Humerus..........523 Key Words: Allometry, Multivariate analysis, Humerus, Locomotor behavior, Primate evolution.

Bassoff, Trina B.: Behavioral Changes Across the Menstrual Cycle in Isosexual Group of Bonnet Macaques (Macaca radiata )..........549 Key Words: Menstrual cycles, Behavior, Hormones, Follicular, Luteal, Bonnet macaque.

Murayama, Yuichi; Shibata, Hiroaki; Nagashima, Takeyuki; Takuwa, Miki; Terao, Keiji; Noguchi, Atsuo: Chromosome Sorting of Primates: Isolation and Idenification of Y Chromosome in Green Monkeys..........563 Key Words: Flow karyotype, Chromosome isolation, Y chromosome, SRY gene, DYZ1 locus, Green monkey.

Short Communications

Takahata, Yukio; Koyama, Naoki; Huffman, Michael A.; Norikoshi, Koshi; Suzuki, Hisayo: Are Daughters More Costly to Produce for Japanese Macaque Mothers ?: Sex of the Offspring and Subsequent Interbirth Intervals..........571 Key Words: Interbirth interval, Offspring sex, Japanese macaque, Female rank.

Yeager, Carey P.: Does Intraspecific Variation in Social Systems Explain Reported Differences in the Social Structure of the Proboscis Monkey (Nasalis larvatus )..........575 Key Words: Proboscis monkey, Brunei, Intraspecific variability in social systems, IVSS.

Swindler, Daris R.: Canine Root Development and Morphology in Macaca nemestrina..........583 Key Words: Canine root number, Pig-tailed macaque, Yellow baboon.

Researach Report

Marchesi, Paul; Marchesi, Nathalie; Fruth, Barbara; Boesch, Christophe: Census and Distribution of Chimpanzees in Cote D'Ivoire..........591 Key Words: Chimpanzee, Census, Distribution, Côte D'Ivoire, Method, Conservation.

Book Review..........609

Information..........611