348 Proceedings of the Royal Irish Academy. 



and a smaller bony bridge passes from the carotico-jngular crest to the 

 ex-occipital. The right foramen spinosum is in the line of the suture, 

 and the scaphoid fossa is continuous down to the hamular process. 



The nasal bones are prominent, ridged, narrow above and wide 

 below ; the lachrymal has a sharp crest, a middle and inferior process, 

 a short lachrymo- ethmoidal suture 1 cm. long. The malar has a pos- 

 terior temporal process, and the infra-orbital canal is very oblique, 

 looking downwards and inwards, with a sharp crescentic outer edge. 

 The anterior nasal spine is double and prominent. 



The teeth are large, the lower molars with much-wrinkled 

 crowns; the third lower has its fifth hindmost cusp large, and its other 

 cusps divided by secondary furrows. The right third upper molar is 

 nearly as large as the first, and a diastema, 6 mm. long, intervenes 

 between the second premolar and the first molar on the right side 

 above. 



The lower incisors are strongly curved, concave backwards. The 

 alveolar parabola of the lower jaw measures 57 mm. from before back- 

 wards, and 62 mm. transversely across the third molar. The semi- 

 ellipse of the upper teeth is 50 mm. in its semiaxis major and 62 mm. 

 in its axis minor. . 



The mandibles are large, strong, 87 mm. from angle to angle, 

 70 mm. in height at the condyle, which was 29 mm. in transverse 

 breadth; the outer points of the two condyles were 125mm. apart, 

 while the inner were 77 '5 . 



The skull of No. 2 was larger, finer, more massive, prognathous, 

 dolichocephalic, cryptozygous, microseme, platyrhinal, and having the 

 the following measurements: — Greatest length 188-5mm. ; greatest 

 breadth, supramastoid 136 mm., interparietal 132 mm.; greatest height 

 140 mm.; fronto-iniac arch 350 mm.; intermastoid arch 380 mm.; 

 orbital index 75 -5 ; cephalic index 72'3. 



In many respects it resembled that of ]^o. 1, but showed the fol- 

 lowing differences : — 



The coronal suture is uncommonly gyrated on each side, and the 

 spheno-parietal suture is absent, as the squamosal on both sides arti- 

 culates with the frontal. The left occipital condyle is wider and 

 longer, the right narrower and shorter, and both anterior condyloid 

 holes are undivided, both posteriors wanting. The stylohyals are 

 short, while in No. 1 they are very long, ankylosed, and the jugular 

 holes are only imperfectly bridged. The upper band of the pterygo- 

 spinous ligament is ossified, and the scaphoid fossa is small. The 

 nasal bones are typically flattened and nearly of equal width through- 

 out; the lachrymal has a very short ethmoidal suture, 8 mm. long, and 

 a slight trace of a superior process. 



The scapular index of No. 1 is -73°, of No. 2 is -71. In No. 1 the 

 clavicles are markedly unsymmetrical, the right being 150 mm., the 

 left 132 mm. long. The left humerus has an intercondyloid per- 

 foration. The tibise are nearly platycnemic ; and each femur has a 

 well-marked tuberculum colli anterior. 



