HRDLifKA] SKELETAL. REMAINS OF EARLY MAN 331 



There is every indication that the parietals were of normal 

 modern-human shape and size. The horizontal length of what 

 remains of them is actually 6.3 cm. There is absolutely no evidence 

 that the parieties of the skull were parallel or that the maximum 

 biparietal did not exceed the greatest frontal diameter. 



The orbits were of ordinary dimensions. The breadth of that 

 on the right, from the lowe? extremity of the fronto-nasal suture to 

 the point of meeting of the orbital border and the fronto-malar 

 suture, is 39 or at most 40 mm., which is about the Indian average. 



So far as can* be judged from their upper portions, the orbits also 

 were of no unusual form. The arching of the superior border is 

 moderate but not subnormal, especially for a male. If a line is 

 drawn from the nasion to the point of intersection of the fronto- 

 malar suture and the limiting line of the orbit, the maximum 

 elevation of the upper border of the orbit above this horizontal is 

 9 mm.; in a Peruvian male (No. 266023, U.S.Nat.Mus.) and in a Pata- 

 gonian (No. 262149), neither selected for lowness of orbits, it is 

 equally 9 mm., in the before-mentioned Piegan it is 9.5 mm., and in a 

 Patagonian from San Xavier it is 8 mm. From a line connecting 

 the orbital extremities of the two fronto-malar sutures, the highest 

 point of the border is distant 16 mm. 



The roof of the orbits, which received prominent attention in the 

 original report on the Di'prothomo, presents, when the skull is 

 properly posed, no unusual feature. What appeared to be a peculiar 

 inclination was due to the same cause as the apparent slope down- 

 ward of the sagittal region, namely, the tilted position of the speci- 

 men. If a piece of an ordinary Indian skull corresponding in size 

 to that of the Diprothomo be laid by the side of the latter in a similar 

 position, or if the casts of the orbits from this and other skulls be 

 compared, we find that the roof is similarly inclined in both, and 

 also that in most masculine Indian crania which do not show more 

 massive or protruding supraorbital arches the concavity of the outer 

 part of the roof is somewhat shallow. Such shallowness was found in 

 a number of the crania in the Museo Nacional, especially in No. 25, 

 as well as in Nos. 3, 13, 23, and 42, and in numerous specimens in 

 the United States National Museum. There is therefore no ground 

 for an assumption that the eyes were bulging. 



Finally, there is no indication, nor any probability, that the lower 

 orbital borders protruded forward, so that they would have been 

 visible from above with the skull in a standard position. 



As to the vault sutures, the coronal is ventrally all obliterated 

 but dorsally well traceable so far as the bone is preserved. The 

 sagittal suture is patent both ventrally and dorsally. The serration 

 of both the coronal and the sagittal is wfell-developed and actually 

 more complex than usual in the Indian. The breadth of the serration 



