Decisions on time allocation to different food patches by Japanese monkeys (Macaca fuscata) Naofumi Nakagawa OriginalPaper Pages: 459 - 468
Social play and sexual behavior of the bonobo (Pan paniscus) with special reference to flexibility Tomoo Enomoto OriginalPaper Pages: 469 - 480
Group harmony in gibbons: Comparison between white-handed gibbon (Hylobates lar) and siamang (H. syndactylus) Jan O. FischerThomas Geissmann OriginalPaper Pages: 481 - 494
The distribution of baboon species and a new population of gelada baboons along the Wabi-Shebeli river, Ethiopia Akio MoriGurja Belay OriginalPaper Pages: 495 - 508
Playmate relationships of immature free-ranging Japanese monkeys at Katsuyama Shinji Imakawa OriginalPaper Pages: 509 - 521
Parturition and perinatal behaviour in captive cotton-top tamarins (Saguinus oedipus) Eluned C. Price OriginalPaper Pages: 523 - 535
Object concept and mental representation inCebus apella andMacaca fascicularis Gabriele SchinoGiovanna SpinozziLuisa Berlinguer OriginalPaper Pages: 537 - 544
Multidimensional auditory stimulus control in a chimpanzee (Pan troglodytes) Masaki Tomonaga OriginalPaper Pages: 545 - 553
Numerical analysis of the taxonomical status ofCallithrix kuhli based on measurements of the postcanine dentition Masahito Natori OriginalPaper Pages: 555 - 562
Paternity discrimination in a Japanese macaque group by DNA fingerprinting Miho InoueAkiko TakenakaOsamu Takenaka OriginalPaper Pages: 563 - 570
A cytogenetic study on congenital limb malformations in the Japanese monkey (Macaca fuscata) Mitsuru MinezawaKen NozawaHideo Nigi OriginalPaper Pages: 571 - 577
Problems associated with long-term feeding of purified diets in rhesus monkeys Mari S. GolubM. Eric GershwinAndrew G. Hendrickx OriginalPaper Pages: 579 - 588
Inter-population differences in the time budgets of bonnet monkeys (Macaca radiata) Mewa SinghS. Vinathe Short Communication Pages: 589 - 596
Do rhesus mothers suggest friends to their offspring? Frans B. M. de Waal Short Communication Pages: 597 - 600
Vocal communication in captive golden monkeys (Rhinopithecus roxellanae) A. S. Clarke Short Communication Pages: 601 - 606
Avian nest predation by a semi-captive collared lemur (Lemur fulvus collaris) Douglas H. Shedd Short Communication Pages: 607 - 609
Operant conditioning of scratching in lemurs James R. AndersonCatherine FritschBernadette Favre Short Communication Pages: 611 - 615
Sex identification of the phayre's leaf monkey (Presbytis phayrei Blyth, 1847) with the help of facial marks T. BhattacharyaD. Chakraborty Short Communication Pages: 617 - 620
Digging and eating of underground plant-parts by wild Japanese monkeys (Macaca fuscata) Motoi IguchiKosei Izawa Research Report Pages: 621 - 624
A note on the present situation of the primate fauna found from south-eastern Cameroon to northern Congo Masazumi Mitani Research Report Pages: 625 - 634
Case report on the death of a wild chimpanzee (Pan troglodytes verus) Tetsuro MatsuzawaOsamu SakuraYukimaru Sugiyama Research Report Pages: 635 - 641
