32 



PLEISTOCENE MAMMALIA. 



Table of Measurements. 





Mounted skeleton 

 72(in in Zool. 



Lett femnr from 

 Whitstable. 



Separate bones 

 mounted in 



Mounted skeleton 

 from Barrington, 



Separate bones 

 from Barrington, 



Femur. 



Dept. of Brit. 

 Mus. 



in Geol. Dept. of 

 Brit Mus. 



Zool. Mn-.. 

 ( Cambridge. 



in Sedgwick 



Mus., Cambridge 



rt., 



in Sedgwick 



Mus., Cambridge 



rt. . 











1. Length measured from head to 















47 (i 



57 75 



16-2 



5035 



540 



2. Transverse diameter at condyle 



13 ."> 



18a 



1505 



17 15 



lliii.-, 



3. Antero-posterior diameter of 













head 



71 



965 



73 



7!i 



9 1 



4. Antero-posterior diameter of 













middle of shaft 



5'85 



SL>5 



61 



69 



77 



5. Transverse diameter at proxi- 













mal end measured across head 













and great trochanter 



1575 



202 



166 



168 



1965 



Tibia. 





311 





33 4 





3775 



2. Right to left diameter at proxi- 













mal end 



1405 





15 35 





170 



3. Antero-posterior diameter at 













proximal end measured from 













notch between articular sur- 













faces for femur to top of crest 



98 





100 





1 17 



4. Right to left diameter at distal 















93 





96 





10-75 



Fibula. 













1. Length 



26-8 





2815 







2. Antero-posterior diameter at 















20 





24 







3. Antero-posterior diameter at 













narrowest part of shaft 



•9 





1-25 







4. Antero-posterior diameter at 



distal end 



65 





77 







Pes. 



1. Length of calcaneum 



18-5 











2. Maximum transverse diameter 











... 



of calcaneum 



7-8 









... 



3. Right to left diameter of astra- 













galus measured at tibial arti- 















71 













95 











5. „ 3rd 



128 











6. „ 4th 



135 











7. „ 5th 



98 





• 







IV. MUTUAL RELATIONSHIP OF THE HIPPOPOTAMID^E. 1 



Although so highly specialised in many respects, the hippopotami, as regards 

 their limbs and grinding teeth, are the most primitive of living artiodactyls. The 

 origin of the Hippopotamidos is still obscure, and the earliest known species differ 

 from the living Hippopotamus amphibius mainly in the slightly more generalised 

 character of the incisors. 



Stehlin, 2 basing his opinion chiefly on certain dental characters, has suggested 



1 For a synopsis of the Hippopotamitla? sec Falconer, ' Palseontological Memoirs,' ii, p. 406. 



2 ' Abh. Schweiz. Pal. (resell..' xxvi. p. 4;J:'>. 



