1. Initiation and solicitation in male-female grooming in a wild Japanese macaque troop on yakushima island

   • Takahiro Tsukahara

   OriginalPaper Pages: 147 - 156

2. Rates of predation on mammals by gombe chimpanzees, 1972–1975

   • R. W. Wrangham
   • E. van Zinnicq Bergmann Riss

   OriginalPaper Pages: 157 - 170

3. Group size variability in primates

   • Guy Beauchamp
   • Gilbert Cabana

   OriginalPaper Pages: 171 - 182

4. Social behaviour and infant carrying in a group of moustached tamarins,Saguinus mystax (primates: Platyrrhini: Callitrichidae), on Padre Isla, Peruvian Amazonia

   • Eckhard W. Heymann

   OriginalPaper Pages: 183 - 196

5. Comparison of affiliative behaviors between old and recently established pairs of golden lion tamarin,Leontopithecus rosalia

   • Julio César Ruiz

   OriginalPaper Pages: 197 - 204

6. Threat calls in alliance formation by members of a captive group of Japanese monkeys

   • Shoji Machida

   OriginalPaper Pages: 205 - 211

7. Mother-infant interactions of wild-born, individually-caged cynomolgus monkeys (Macaca fascicularis) during the first 14 weeks of infant life

   • Masayuki Nakamichi
   • Fumiaki Cho
   • Tetsuhiro Minami

   OriginalPaper Pages: 213 - 224

8. Sexual preferences during artificial menstrual cycles in social groups of rhesus monkeys (Macaca mulatta)

   • Richard P. Michael
   • Doris Zumpe

   OriginalPaper Pages: 225 - 241

9. Copulatory behavior unaccompanied by ovulation in the Japanese monkey (Macaca fuscata)

   • Hideo Nigi
   • Shin-ichi Hayama
   • Ryuzo Torii

   OriginalPaper Pages: 243 - 250

10. Hour of delivery in cynomolgus monkeys under indoor individually-caged conditions

    • Michihiro T. Suzuki
    • Takahiro Ono
    • Fumiaki Cho

    OriginalPaper Pages: 251 - 255

11. Relative brain size, stratification, and social structure in anthropoids

    • Toshiyuki Sawaguchi

    OriginalPaper Pages: 257 - 272

12. Craniometric allometry in the thicktailed bushbabyOtolemur Crassicaudatus

    • Julius A. Kieser

    OriginalPaper Pages: 273 - 281

13. Neocortical development and social structure in primates

    • Toshiyuki Sawaguchi
    • Hiroko Kudo

    Short Communication Pages: 283 - 289

14. Standing and climbing a pole by members of a captive group of Japanese monkeys

    • Shoji Machida

    Short Communication Pages: 291 - 298

15. Survey and census of the hoolock gibbon in West Garo Hills, Northeast India

    • J. R. B. Alfred
    • J. P. Sati

    Research Report Pages: 299 - 306

16. Announcement

    Information Pages: 307 - 309