36 Proceedings of the Royal Irish Academy. 



external pterygoid^muscle. The lower border of the processus zygoinaticus 

 was deeply grooved. The whole of the area for the attachment of the 

 temporal muscle was strongly marked. The muscles of mastication had, 

 apparently, been more powerful than is usual in modern Irish people. The 

 specimen had been damaged in two places on the frontal bone ; one hole 

 exposed the right frontal sinus filled with loose greyish soil. 



Of the other specimens three showed indications of the grooves produced 

 by the divisions of the supra-orbital nerve. The male specimens all showed 

 strong development of the arcus superciliaris, and, in one particularly, the 

 projection of the glabella and the prominent ridges united to it was 

 striking. 



Two specimens showed portions of the face and some teeth. The larger 

 of these consisted of an almost complete facial aspect of a young skull. The 

 forehead was high and vertical ; the arcus superciliaris feebly developed ; the 

 frontal eminences well shown. Grooves for the supra-orbital nerve were very 

 distinct. The orbits were large, the apertures almost quadrilateral, the nasal 

 orifice narrow with sharp margins and prominent nasal bones. The facial 

 breadth was 115 mm. The palate was high, well arched, and measured just 

 40 mm. transversely between sockets for wisdom teeth. With the exception 

 of the third permanent molars, which apparently had not erupted, the teeth 

 were perfect, the crowns moderately worn, more on the right side than on the 

 left— the specimen was from a young subject. The incisors showed distinct 

 small posterior cusps. The other specimen was from an individual of more 

 gaunt aspect, with prominent malar bones and deeply sunk canine fossae. 

 All the molars on one side were in position, their crowns were well worn, and 

 the third molar smaller than the first. The subject was comparatively young, 

 the wisdom tooth apparently having been erupted only a short time. The 

 palate had been high, and the external pterygoid plate was similar to that 

 described previously. 



Portions of two mandibles were recovered. The larger specimen comprised 

 rather more than half of a powerfully developed jaw-bone, presumably from 

 a male. The mental protuberance was markedly shown, the sigmoid notch 

 deep, and muscular impressions strong. The bone was of a high type of 

 development, massive and well marked. The last molar tooth was in position 

 and showed a well-worn crown. 



The other mandible was of a lighter build ; the sigmoid notch was shallow 

 and wide ; and the muscular impressions were strongly marked. In the first 

 specimen the angle was everted, in the second somewhat inverted. In both 

 cases the angle between ramus and body suggested middle life. 



From the above it will be noticed that there is as much variation among the 



