75 



prairie regions of Canada. The best portion of the skull of one indi- 

 vidual may be seen about three feet long and eighteen inches acrosg 

 with the frontal bones and snout preserved ; also the two horn-cores 

 and port'ons of the upper jaw with several huge molars in situ. The 

 lower jaw of the same individual was also found with the teeth beauti- 

 fully preserved. Some of these teeth are nearly four inches across and 

 three inches in thickness, bemg nearly four inches in length, with 

 lengthened roots and sharply cut crowns. The humerus, femur., tibia and 

 many horn-cores, bones of the pelvic arch, and of various other portions 

 of the skeleton were also found, making in all a beautiful display of 

 fossil bones belonging to as huge and ferocious a beast as any of those 

 which to-day are found in the jungles of an i\lrican or Indian forest. 



Besides this form of Me?iodus, Prof Cope has recognized a number 

 more to which he has given separate specific designations, so that we 

 find that there existed in Canada not only this huge and ferocious 

 individual, but other allied creatures. These included Aienodus syceras 

 Cope; M. Proutii., Cope: M. Americanus, Cope, and M. Selwyni, Cope. 

 They all belong to Miocene Tertiary strata, occuring in the vicinity of 

 Swift Current, N.W.T. These belong to the family of the Titanotherid^ 

 and form a group of animals analogous to the modern rhinoceros. 



Extinct Boar. 

 Elotherium Mortofii, Leidy. Amongst the specimens on exhibition 

 and collected by Mr. Weston, may be seen an almost perfect lower left 

 ramus of this extinct mammal, allied to the modern wild boar and 

 domestic pig, all of which belong to the family of the Chaeropotamidae. 

 This creature was of huge dimensions, the specimen in question being 

 nearly lo inches in length, and the teeth are beautifully preserved in a 

 spotted grey and yellowish coloured lime-rock. This is the first time 

 that this form has been found so far north on the American Continent. 



Extinct Deer. 



Leptomervx mammifer, Cope. This new species, and a member 

 of the family of the Tragulidoi, appears to be one of the ancestors of the 

 deer tribe, baing both a ruminant and ungulate mammal, a very well 

 preserved portion of the lower jaw, with several teeth in situ has per- 

 mitted Prof Cope to establish its relations and affinities, and it forms 



