The members of the band are for the most part the near relatives of the leader, brothers and sons and nephews with their wives and children. Each man has usually one wife. We know of no instances of polygyny amongst them; though we know of cases in which a Punan woman has become the second wife of a man of some other tribe. On the other hand, polyandry occurs, generally in cases in which a woman married to an elderly man has no children by him. They desire many children, and large families are the rule; a family with as many as eight or nine children is no rarity.

Marriage is for life, though separation by the advice and direction of the chief, or by desertion of the man to another community, occurs. Sexual restraint is probably maintained at about the same level as among the other peoples, the women being more strictly chaste after than before marriage. The ceremony of marriage is less elaborate than among the settled tribes. A young man will become the lover of a girl generally of some other group than his own, and when she becomes pregnant the marriage is celebrated. There is little or no formal arrangement of marriages by the elders on behalf of the young people.

The ceremony of marriage consists merely in a feast in which all, or most of, the members of the two communities take part. Speeches are made, and the leaders exhort the young couple to industry and to obedience to themselves, making specific mention of the principal duties of either sex, such as collecting camphor and procuring animal food for the man, the preparing of sago, cooking, and tending the children for the woman.

After the ceremony, the husband joins the wife's community and generally remains a member of it; unlike the Kayans, among whom a husband, though he may live for some years with his wife's people, eventually brings her to his father's village. No definite payment is made to the parents of the bride, but some small gift, perhaps two or three pounds of tobacco, is usually presented to them by the bridegroom.

Adverse omens may cause the postponement of a marriage; but beyond this there seems to be no regular method of obtaining or seeking divine sanction for the marriage; an offering of cooked food may be made to Bali-Penyalong, by placing it on a stake beneath the image of the crocodile (which seems to serve as an altar) with some dedicatory words — for like the other peoples the Punans are voluble in speech, both in human intercourse and in appealing to the supernatural powers. On such occasions the words uttered usually take in part the form of a prayer for protection from danger.

Those who are accustomed to all the complex comforts and resources of civilisation, and to whom all these resources hardly suffice to make tolerable the responsibility and labour of the rearing of a family, can hardly fail to be filled with wonder at the thought of these gentle savages bearing and rearing large families of healthy well-mannered children in the damp jungle, without so much as a permanent shelter above their heads. The rude shelter of boughs and leaves, which is their only house, is perhaps made a little more private than usual for the benefit of the labouring woman. The pregnant woman goes on with her work up to the moment of labour and resumes it almost immediately afterwards. She at once becomes responsible for the care of the infant. The only special treatment after childbirth is to sit with the back close to a fire, so as to heat it as much as can be borne. The delivery is sometimes aided by tightly binding the body above the gravid uterus in order, it would seem, to prevent any retrogression of the process. While the mother goes about her work in camp, the infant is usually suspended in a sling of bark-cloth from a bent sapling or branch, an arrangement which enables the mother to rock and so soothe the child by means of an occasional push. When travelling or working in the jungle the mother carries the infant slung upon her back, either in a bark-cloth or a specially constructed cradle of plaited rattan such as is used by the Kayans. The infant is suckled from one to two years, and then takes to the ordinary diet of boiled wild sago, varied with other animal and vegetable products of the jungle.

The children begin to help in the family work at a very early age. They are disciplined largely by frequent warnings against dangers, actual and suppositious, of which they remain acutely conscious throughout life. This discipline no doubt contributes largely to induce the air and the attitude of timid alertness which are so characteristic of the Punan. Harmony and mutual help are the rule within the family circle, as well as throughout the larger community; the men generally treat their wives and children with all kindness, and the women perform their duties cheerfully and faithfully.

The religious beliefs and practices of the Punans are similar to those of the Kayans, but are less elaborated. They observe a simpler system of omens, of which the behaviour and calls of lizards and grasshoppers and of the civet cat (ARCTOGALE) are the chief. They pray to Bali Penyalong, who seems to be the principal object of their trust. This being is probably conceived anthropomorphically, but his human qualities are not so clearly marked as in the case of the gods of the settled tribes. They make no images in human form, and we do not know that Bali Penyalong is supposed by them to have a wife. The only image used in rites is the wooden image of the crocodile, which is carried from place to place with every change of camp. In communicating with the omen-creatures, fire and the frayed sticks are used in much the same way as by the Kayans. Their rites involve no animal sacrifices, and they do not look for guidance or answer to prayer in the entrails of animals. It seems probable that the Punans in each region have absorbed some of their religious and superstitious notions from the settled tribes of the same region; for in each region the Punan beliefs are different, showing more or less affinity to those of the settled tribes. It is an obscure question whether all their religious belief has been thus absorbed from more cultured neighbours, or whether the Punans represent in this and other respects the perpetuation (perhaps with some degeneration or impoverishment) of a more primitive culture once common to the ancestors of all, or the greater part of, the tribes of Borneo.[175] The fact that the principal divinity recognised by them bears the same name (Bali Penyalong) as the chief god of the Kenyahs is compatible with either view.

Beside Bali Penyalong the Punans are aware of the existence of other divinities, which, however, are very obscurely conceived and seldom approached with prayer or rite. As regards the land of shades and the journey thither, Punan beliefs are closely similar to those of Kenyahs and some of the Klemantans. Their account of the journey of the dead includes the passage of a river guarded by a great fish and a hornbill (see Chap. XIV.). But they practice no burial and no funeral rites. As soon as a man dies in any camp, the whole community moves on to a new camp, leaving his body under one of their rude shelters, covered only with a few leaves and branches.

Their view of the life after death seems to involve no system of retribution and to be wellnigh devoid of moral significance. Their religious beliefs probably influence their conduct less strongly than do those of the Kayans; for among the latter such beliefs certainly make strongly for social conduct, I.E. for obedience to the chiefs and for observance of custom and public opinion; but in the Punan community the conditions of life are so simple and so nearly in harmony with the impulses of the natural man that temptations to wrong-doing are few and weak; external sanctions of conduct, therefore, are but little needed and but little operative.