1. Longitudinal changes of dominance rank among the females of the Koshima group of Japanese monkeys

   • Akio Mori
   • Kunio Watanabe
   • Naotsugu Yamaguchi

   OriginalPaper Pages: 147 - 173

2. Social organization in a confined group of Japanese macaques (Macaca fuscata): An application of correspondence analysis

   • A. Lunardini

   OriginalPaper Pages: 175 - 185

3. Dominance among male chimpanzees in the Mahale Mountains National Park, Tanzania: A preliminary study

   • Hitoshige Hayaki
   • Michael A. Huffman
   • Toshisada Nishida

   OriginalPaper Pages: 187 - 197

4. Intergroup calls of male pig-tailed langurs (Simias concolor)

   • Richard R. Tenaza

   OriginalPaper Pages: 199 - 206

5. Serum chorionic gonadotropin, progesterone, and estradiol-17β levels during pregnancy in the common marmoset,Callithrix jacchus

   • Ryuzo Torii
   • Hideo Nigi
   • Yoshikuni Tanioka

   OriginalPaper Pages: 207 - 215

6. Individual identification of non-human primates using DNA fingerprinting

   • Keiko Washio
   • Shogo Misawa
   • Shintaro Ueda

   OriginalPaper Pages: 217 - 221

7. A new species of the genusAustralopithecus (primates: hominidae) from Plio/Pleistocene deposits west of Lake Turkana in Kenya

   • Walter W. Ferguson

   OriginalPaper Pages: 223 - 232

8. Taxonomy and distribution of the françois' langur (Presbytis francoisi)

   • Shilai Ma
   • Yingxiang Wang
   • Frank E. Poirier

   OriginalPaper Pages: 233 - 240

9. Some observations of two kinds of lemuridae (Varecia variegata variegata andLemur fulvus albifrons) in the reserve of Nosy Mangabe

   • Taizo Iwano

   Short Communication Pages: 241 - 248

10. A report of behavioral lateralization in an infant orang-utan (Pongo pygmaeus)

    • Deborah Cunningham
    • Chris Forsythe
    • Jeannette P. Ward

    Short Communication Pages: 249 - 253

11. Twins in free-ranging Hanuman langurs (Presbytis entellus)

    • Paul Winkler
    • Dorothea Wrogemann
    • Hans Prestel

    Short Communication Pages: 255 - 259

12. Macaca fuscata develops thin enamel on lingual sides of lower incisors

    • Mitsuru Aimi
    • Yasuo Nogami

    Short Communication Pages: 261 - 264

13. Morphological variations of the cranium within the genusLeontopithecus

    • Masahito Natori
    • Tsunehiko Hanihara

    Short Communication Pages: 265 - 268

14. Cyclic development of contact behavior in apes and humans

    • Robert H. Horwich

    Research Report Pages: 269 - 279

15. Book reviews

    • Tamaki Maruhashi
    • Tasuku Kimura

    BookReview Pages: 281 - 283

16. Meeting announcement

    Information Pages: 284 - 284