hi 



PLEISTOCENE MAMMALIA. 



Mian in the cave bear, and is as a rale rather more contracted posteriorly. The 

 surface of the crown tends to be ridged rather than tuberculated. 



It proved impossible to obtain anything approaching a complete series of milk- 

 teeth, and it therefore seemed best not to attempt a description of them. 



(2) Table of Measurements of the Series of Permanent Teeth from Torbryan, near Torquay, 

 figured on Plate VI. 



jl 



.11 



*1 



B 

 p. 





1 



t 



"1 



[j 



1] 



l'l 21 



075 



20 



25 



395 



09 



0-9 



105 



1-6 



055 



1-5 



1-8 



1-9 



05 



30 



37 



89 









... 





29 



1. Anteroposterior extent at base of 



crown i 1"0 



2. Maximum transverse measure 



ment 09 



3. Maximum length measured along ) 



a straight line from root to I 

 crown 29 



09 0-95 

 075' 1-05 



1-55; 27 

 095 1-2 



c. The Veetebeal Column (Plates VII, VIII). 

 The vertebral column of bears shows few characters distinguishing it from that 

 of other Carnivora. Probably the most noteworthy feature is the tendency to 

 ankylosis in the sacral region in old animals, which may have as many as five 

 sacral and pseudo-sacral vertebras (see Text-fig. 1, p. 19). There are fourteen thoracic 

 and six lumbar vertebras as compared with thirteen thoracic and seven lumbar in 

 Felis, Ganis and Viverra, and fifteen thoracic and five lumbar in Meles. 



(3) Tables of Comparative Measuhements of Bear Veutebr^e. 



Atlas. 



1. Maximum width 



2. Median dorso- ventral diameter 



;;. Kx( reme width of the condylar articular 



surfaces 



4. Maximum width of neural canal 



Axis. 



l. Length from anterior end of odontoid 

 process to pi istei'o- ventral extremity 

 of centrum 



'J. Height from roof of neural canal to top 

 of neural spine 



3. Transverse diameter across prezygapo- 



physes 



I. Transverse diameter across postzygapo- 

 physes 



5. Length from anterior end of neural 



spine to notch between postzygapo- 

 physes 



U. speliEus, 



Banwell 



(Taunton Mus.). 



89 

 635 

 8"4 

 7-65 



XT. horribilit, 

 Sandford 



Taunton Mus. . 



U. horriUli», 

 No. 854(College 



of Surgeons). 



8-1 

 3-55 



815 > 

 3-55 

 6-85 



17-3 

 4-4 



No. 218 <«' 

 i lint. Mus.). 



19-6 



535 



8-2 

 4-0 



l'l 

 6-8 

 59 



