570 GEOLOGICAL SURVEY OF THE TERRITORIES. 



Tlie teeth are remarkable for tbe extent of tlie exposure of their sleuder 

 roots, as well as their very small size as compared with f "he size of the 

 animal. The tusk is slii^litly turned outwards at the tip and the inner 

 face is worn by attrition with someoi)[K)sing tooth for one- third its length 

 on the posterior third. The superior margin of the enamel on this side 

 is chevron-shaped, the apex being only one-third the length from the 

 extremity. It extends further ui)wards in front and on the outer side, 

 but is worn in an oval patch at the apex of the chevron of this side by 

 contact with the inferior teeth, as above described. The enamel is smooth 

 behind, rugose in front. The ai)ex contracts regularly to a flattened 

 obtuse ])oiiit. The fang is hollow for about half its length. The enamel 

 of the molars is nearly smooth. Each one has a strong ciugulum fore 

 and aft, which is discontinued on the inner and outer faces except in P. 

 M. 1, and iM. 2. In the fon-mer, it is continued on the outer side at the base 

 of the concavity of the exterior face ; on the latter, it is continued 

 round the inner side. The grinding surface of the P. M. 1 is tripodal, 

 and probably composed of a worn crescent and inner tubercle. The 

 others are transverse arrow-shaped ; the P. M. 4 is much more worn than 

 the others. M. 2 is larger than M. 1. Its oblique crests have evidently 

 been worn from before. All the molars have three roots, but the poste- 

 rior pair are united for part of their length in all. 



The vomer does not unite with the sui)erior crest of the palatine bones. 

 The sphenoid flattens out behind the postnareal trough and is co-ossified 

 with the basioccipital. The latter is marked by two oval surfaces at the 

 place of suture, with a slight prominence between. No lower jaw was 

 found with this specimen, butirom the contraction of the parts opposed 

 to it, it was evidently very small. 



• Cranial measurements. 



M. 



Length from end nasals to end occipital condyle, (3 feet 1.5 inches) 0.9o0' 



Width just, behind end nasal shovels 192 



Width in front of horns , 132 



Widtli at base of horns in front 205 



Widtli behind horns at apex of frontal suture 185 



V.'idth above posterior edge meatus audiioiiiis 310 



Width between apices horn-cores 370 



Width basis supraoccipital horn-core — 100 



Width including zygomatic arches, (greatest) 320 



Leugtli of nasal bones to ridge between horn-cores 410 



Length of nasal bones to frontal suture 540 



Length of zygomatic fossa above 230 



Length from angle uares to end shovel 205 



Length from angle uares to end premaxillary 155 



Length from end premaxilhiry to basis of canine 120 



Lengt h from end premaxilhiry to basis of P. M. 1 2TG 



Length of i.'iolar series 1S5 



Length of pahite 450 



Length of ptery go-palatine crest 200 



Length of sphenoid axis 1S5 



Length of basioccipital, (witli condyles) 12S 



Wiilth between tips premaxillaries 070 



■\VidTh at canine alveoli 1S5 



Width l)etween caniue alveoli 080 



V\ idth at diastema 050 



Width between last molars 070 



Width between pterygo-palatiue crests Ot55 



Width of post-glenoid ))rocess 095 



Width between jKist-glenoid processes 095 



Width basiocci[)ital at Iront 073 



^\'idtll l)asiocci[)ital at condyles 200 



Width of spai'e f<ir tympanic chand>er 0)54 



Length tusk on curve, ( 12.7 inches) j*. 320 



