51 



Measurements. 



c. cm. 

 Capacity 1325 



W7n. 



Length 168 



Breadth 144 



Breadth of frontal « 119 



Height 135 



Frontal arch 319 



Parietal arch 346 



Occipital arch 234 



Longitndiual arch 359 



Circumference » 508 



Length of frontal 123 



Length of parietal 134 



Length of occipital 160 



Zygomatic diameter ' 144 



Sicull Xo. 2.— Plates 25, {Fig. 2,) 26, a7id 27. 



According to its features, the skull designated by No. 2 is that of a 

 woman, and is, with the exception of the zygomatic bones, which are 

 broken, well preserved. If, among the Indians, the eruption of the 

 last molars takes place at the same time as in our race, the skull in 

 question cannot have belonged to a person much younger or older than 

 seventeen.* In general, the skull is delicately built, being rather small, 

 showing smooth surfaces and weak muscular insertions. 



Viewed from above, it presents outlines similar to the skull previously 

 described, but while the latter is deformed on its left side, the one in 

 question is compressed on its right and is asymmetrical in a far higher 

 degree. 



In a profile view we notice above all, highly developed prognathism, 

 a rather low forehead, and the outline of the occiput to be nearly straight. 

 This latter fact is brought to view more strikingly if we look upon the 

 right side of the skull, where we can lay almost a straight line from near 

 the tuber over the surface of the parietal to the mastoid process, touch- 

 ing within a few millimeters thelambdoidal suture. If we measure the 

 distance from the glabella to the left superior curved line of the occiput, 

 it will be 1'^'".3 greater than if measured between the same points on the 

 opposite side, thus showing clearly the asymmetry of the skull. 



A view from behind exhibits this less than one trom the base, 

 the latter revealing a distortion extending from the right side of the 

 occipital to the narrow and elongated palate process of the maxilla, 

 which is pressed forward. As in almost every instance of prognathism, 

 the loramen magnum is thrown backward. This is, however, not only 

 due to the protruding position of the upper maxilla, but also to a great 

 extent to the tlattening of the occiput, causing the occipital bone to turn 

 upward almost abruptly within about half a centimeter from the posterior 

 margin of the foramen magnum, that is on the right side of the skull, 

 there being a little more space on the left. Both pos!^erior condyloid 

 foramina are well developed, the right one being larger than the left. 

 The muscular insertions on the left side of the uccii)ital are more 

 strongly marked than those of the right, especially the places of inser- 

 tion of the complexus and the rectus capitis. The protuberance is 



*A8 pnlierty takes place sooner among Indians than among white men in general, 

 we may conclude that the eruption of the last molars occurs eaalier with the former 

 races than with the latter. 



