26 RECORliS OF THE AfPTRAl^IAX MTSKCM. 



right parietal bune, and the teeth are imperfect. Otherwise 

 the skull is complete. 



No7-iua verticalis. — The skull is lung, and ovoid iu outline, 

 iucliuiijg, however, to the pentagonal shape on the right side. 

 The triangular ai-ea in fi'ontof the bregma is not well marked, 

 the frontal bone being on the whole uniformly rounded. 

 The frontal eminences are well marked. Between the right 

 eminence and the right limb of the coronal suture there is an 

 oval dent 22 mm. by 15 mm. in size. The temporal curved 

 lines run backwards over the most prominent parts of the 

 parietal eminences. From the stephaniou backwards they 

 are distinctly double. The anterior half of the sagittal suture 

 runs in a narrow groove on the top of a crest, which becomes 

 distinct about 2 cm. behind the bregma. Between the 

 ridge and the parietal eminence on each side is a 

 characteristic flattened area. The flattening stops at about 

 the level of the posterior part of the eminence. The posterior 

 half of the sagittal suture runs in the gradually widening 

 groove, which is more dejiressed in its central part. The 

 maximum widening and depression occur at the obelion. 

 Below the parietal eminences the walls slope slightly outwards. 

 • The zygomatic arches stand out prominently when the skull 

 is viewed from above at a distance of a metre from the eye. 

 There are two parietal foramina. The supra-inial occipital 

 squama is rounded, but not bulging, and the iufra-inial portion 

 is flattened or only slightly rounded. 



Norma lateralis. — (PI. xii., fig. 1). The forehead is rounded. 

 The glabella and superciliary ridges are Avell marked and con- 

 fluent. On each side a shallow groove running outwards from 

 the supra-orbital notch separates them from the orbital margins. 

 The right orbital margin is more rounded than the left. The 

 trigonum on each side is flat; the external orbital processes 

 are thick. The supra-orbital depressions are shallow. The 

 nasion is only slightly de{)ressed ; the inter-nasal suture, 

 measured in a straight line, is 16 mm. long. Both nasal bones 

 are of equal width, and measure 8 mm. at the lowest part. 

 The profile outline of the nose is markedly concave, and the 

 nasal bones form a distinct ridge at their sutural junction. 

 The frontal longitudinal arc is the longest, and the parietal 

 next in length. The mastoids are not well developed, and 



