| Skull | Length in cm. | Breadth in cm. | Height in cm. | Cranial Index. | Proportion of height to length. |
| A | 17.6 | 14.0 | 12.2 | 79.5 | 69.3 |
| B | 18.2 | 14.1 | 13.2 | 77.5 | 72.5 |
| C | 17.3 | 12.7 | 12.5 | 73.4 | 72.3 |
It will be observed that the lowest of these three cranial indices is a trifle higher than the lowest of those of the head measurements, that the highest of them is much lower than the highest of those of the head measurements, and that their average (76.8) is a little below the average of those of the head measurements.
Dr. Keith had further measurements made of these skulls from the point of view of prognathism and characters of noses and orbits, with the following results:
| Skull. | Basi-nasal length. | Basi-alveolar length. | Height of nose. | Width of nose. | Height of orbit. | Width of orbit. |
| mm. | mm. | mm. | mm. | mm. | mm. | |
| A | 98 | 102 | 48 | 26 | 40 | 35 |
| B | 99 | 96 | 49 | 25 | 42 | 35 |
| C | 97 | 102 | 47 | 26 | 38 | 35 |
Dr. Keith, referring to these skulls, says that they disclose relatively small brains, the cranial capacity of A being 1,230 c.c., that of B being 1,330 c.c., and that of C being 1,130 c.c. He compares these figures with the average cranial capacity of the male European, which he puts at 1,500 c.c.
The eyes of the Mafulu people are dark brown and very bright. I never saw among them those oblique eyes, almost recalling the Mongolian, which, according to Dr. Seligmann, are found, though rarely only, on the coast,[4] and of which I saw many instances among the Kuni people.
Their lips are usually not so thick as are those of the Mekeo and Roro people, and are generally finer and more delicate in shape.
In view of their Papuan language I kept a sharp look out for the curious backward sloping foreheads and projecting brow ridges and Jewish-looking noses which are so often found among the Western Papuans; but, although I saw a few examples of these, they were rare, and I did not observe any noticeable tendency in these directions in the faces of the people generally.[5]
A curious characteristic with them is the big toe, which is usually much developed, and projects outwards at a larger angle than is the case with the Roro and Mekeo people, and is much used for holding on to roots, &c., whilst travelling along their rough mountain paths.
Their general colour is a dark sooty brown, a trifle darker, perhaps, than that of the Kuni people, and contrasting forcibly with the varying shades of chocolate which you find among the Roro and Mekeo people. They are smooth-skinned.