Vol. 43 No. 4, October 2002

Watts, David P.; Mitani, John C.; Sherrow, Hogan M.: New Cases of Inter-community Infanticide by Male Chimpanzees at Ngogo, Kibale National Park, Uganda ..........263
Key Words: Chimpanzees; Infanticide; Boundary patrols; Cannibalism; Intergroup aggression.

Yiming, Li: The Seasonal Daily Travel in a Group of Sichuan Snub-nosed Monkey (Pygathrix roxellana) in Shennongjia Nature Reserve, China ..........271
Key Words:Sichuan snub-nosed monkey; Pygathrix roxellana; Seasonal daily travel; Food availability; Mean travel distance.

Sicotte, Pascale: The Function of Male Aggressive Displays Towards Females in Mountain Gorillas ..........277
Key Words: Gorilla g. beringei; Male display; Male-female relationships.

Koyama, Naoki; Nakamichi, Masayuki; Ichino, Shinichiro; Takahata, Yukio: Population and Social Dynamics Changes in Ring-tailed Lemur Troops at Berenty, Madagascar Between 1989 - 1999 ..........291
Key Words: Ring-tailed lemurs; Demography; Age of emigration; Survivorship curve; Madagascar.

Kanthaswamy, Sreetharan; Smith, David Glenn: Population Subdivision and Gene Flow among Wild Orangutans ..........315
Key Words: Pongo pygmaeus; Microsatellite polymorphism; Migration; Conservation.

Terao, Keiji; Suzuki, Juri; Ohkura, Satoshi: Circadian Rhythm in Circulating CD16-positive Natural Killer (NK) Cells in Macaque Monkeys, Implication of Plasma Cortisol Levels ..........329
Key Words: Circadian rhythm; Lymphocyte subsets; Natural Killer cells; Macaque monkeys.

Short Communications

Asensio, Norberto; Gómez-Marín, Francisco: Interspecific Interaction and Predator Avoidance Behavior in Response to Tayra (Eira barbara) by Mantled Howler Monkeys (Alouatta palliata) ..........339
Key Words: Howler monkey; Alouatta palliata; Tayra; Eira barbara; Interspecific interaction; Predation.

Asada, Yoko; Kawamoto, Yoshi; Shotake, Takayoshi; Terao, Keiji: Molecular Evolution of lgG Subclass among Nonhuman Primates: Implication of Differences in Antigenic Determinants among Apes ..........343
Key Words: Molecular evolution; IgG subclass; Apes.

Note ..........351

Cumulative Contents, Author Index, Scientific Name Index, and Subject Index for Volume 43 (2002) ..........353