18 



The cranium is represented by nasal, maxillary, malar, occipital bones, 

 etc. The first named has a half conic apex, and an oblique compressed 

 tuberosity, which forms the lateral border behind it, and is directed ob- 

 liquely upwards. The apex of each nasal is vertically compressed acute, 

 and is deeply pitted and rugose for muscular or ligamentous attachments. 

 The inferior lateral marginal ridge is contracted, and encloses a concave 

 median space. The tuberosity sinks to the level of the median suture. 

 The posterior part of the nasal rises to the apex of the middle horn-core, 

 forming its inner face. The postero-superior angle of the premaxillary 

 reaches to near the base of the horn, and is not drawn out to a narrow 

 apex as in L. cornutus. The horn is compressed antero-posteriorly at 

 the base; at the apex obliquely inwards and forwards. The outer face is 

 concave on the lower half, the inner convex. The posterior face is con- 

 cave and the anterior convex when viewed from the side. 



Measurements of Nasal Bone. 



M. 



Width of both at tuberosity 0.124 



11 base of distal cone 060 



Depth of suture at front of tuberosity 030 



Length of suture from premaxillary to horn-core 035 



" horn-core (in front) (6 in.) 150 



Diameter (externally) 080 



11 of apex 048 



TJie occipital region is furnished with an enormous transverse crest 

 which extends upwards and backwards. Its margin is gently convex, 

 and its supero-anterior face concave. The posterior is narrowed by the in- 

 ferior crest-Uke margins of the temporal fossa which extend from the squa- 

 mosal part of the zygoma and gradually contract, terminating abruptly 

 in a low knob where it joins the transverse crest. The posterior face 

 between the former is divided into two planes by a low vertical ridge, 

 which terminates some distance below the summit. The- transverse crest 

 is continued in a curve forwards on each side as the superior margin of 

 the temporal fossa. The specimen does not indicate whether these sup- 

 ported horns, but they are very stout. 



Measurements of Occiput. 



* M. 



Elevation from, foramen magnum 0.180 



Width between inferior temporal crests 250 



" of condyles with foramen 180 



Elevation above internal sinuses at angles 180 



The mastoid tuberosity is short and stout ; the mastoid foramen is large 

 and not piercing a crest. The ex-occipital suture is obliterated. The A- 

 shaped crest behind the meatus in Loxolophodon cornutus is little marked 

 here. The surface of the bone has various muscular impressions. The 

 basi-occipital exhibits a low median crest dividing lateral concavities ; 



