312 Proceedings of the Royal Irish Academy. 



the mastoid process. From this it would seem, that the fusion between 

 the squamosal and periotic is incomplete, and further, that a scale of 

 bone has grown down over the mastoid from the post-auditory process 

 of tlie squamosal. 



Indications of a similar peculiarity are to be seen in specimens C 

 and F ; and in K and L it is almost as well marked as in A. I have 

 also seen it in other Irish Crania. 



The facial measurements are as follows : — 



j^asio-alveolar length, 71. Bi-zygomatic breadth, 123 ? Bi-niax- 

 illary breadth, 91. Bi-dacryc breadth, 23. Basio-alveolar length, 89. 

 Aurieulo-alveolar radius, 95. Bi-malar breadth, 91. Naso-malar line, 

 104. IS'asal length, 50. I^asal breadth, 24-5. Orbital breadth, right, 

 39, left, 38. Orbital height, right, 36, left, 37. Palato-maxilLaiy 

 length, 47. Palato-masillary breadth, 57. 



This is the only specimen in which the bones of the face are 

 present ; it may be described as being a small, well-formed cranium, 

 which is mesaticephalic (77"4), metriocephalic (73"4), leptoprosopic 

 (58), distinctly orthognathous (93-7), prosopic (114), mesorhine (49-0), 

 megaseme (92'3 right orbit, 97'4 left orbit), brachyuranic (121), 

 phsenozygous and barely mesocephalic (1350). 



B. — Calvarium, probably female ; left squamosal and base of 

 cranium wanting ; glabella, jS'o. 1 ; sutures : the central median 

 portion of the coronal has a complication of JS'o. 2 ; the sagittal, Nos. 

 3 to 4 ; and the lambdoid, jS'o. 5 ; the pterion on the right side is in H. 

 There are two epactal bones, the lower measures 37 mm. by 28 mm.> 

 and the upper 18 mm. by 10 mm. ; numerous large wonuian bones in 

 lambdoid suture. 



C. — Calvarium, evidently an old male ; left squamosal and base 

 of cranium wanting; glabella, IS'o. 3 ; the coronal sagittal and lamb- 

 doid sutures obliterated. 



D. — Calvarium, probably a young male ; many of the sutures are 

 gaping ; glabella, jS'o. 2 ; coronal suture, IS'os. 3 to 4 ; sagittal, No. 3 ; 

 lambdoid, jS'o. 4 ; pterion in H, the suture being 13 mm. long ; there 

 is a wormian bone 23 mm. by 15 mm. in the right occipito-mastoid 



suture. 



E. — Calvarium, old male; base of cranium wanting; glabella, 

 1^0. 3 ; sutures : coronal, Kos. 3 to 4, half effaced : the sagittal. 



