1. Introduction

   • B. Diane Chepko-Sade

   EditorialNotes Pages: 551 - 551

2. Social boundaries in a Malagasy Prosimian, the Sifaka (Propithecus verreauxi)

   • Alison F. Richard

   OriginalPaper Pages: 553 - 568

3. Spatial structure in Mangabey groups

   • Peter M. Waser

   OriginalPaper Pages: 569 - 580

4. Sociality in a nocturnal “solitary” prosimian:Galago crassicaudatus

   • Anne B. Clark

   OriginalPaper Pages: 581 - 600

5. A preliminary study of kinship and social organization in a semi-free-ranging group ofLemur catta

   • Linda Taylor
   • Robert W. Sussman

   OriginalPaper Pages: 601 - 614

6. Miocene marmosets: First fossil evidence

   • Takeshi Setoguchi
   • Alfred L. Rosenberger

   OriginalPaper Pages: 615 - 625

7. The behavioral development of free-living chimpanzee babies and infants

   • W. C. McGrew

   Book Review Pages: 627 - 629

8. Announcement

   Announcement Pages: 631 - 631