﻿PLEISTOCENE MAMMALIA. 





(3) Table op 



Comparative Measurements op Hy;ena Skulls. 









7 



i 



„ 





„ 



e S3 



1 • 



A 





,- 



^ 



J*- 



-2-1 





jig 



in 

 m 





Z u 



1 



So 8 



.-* 3 



£ r 9 o 



II g^ 



"-^ a 

 "is! 



ii s& 



II js§ 



ESS 

 o 



sO 

 II %1 



§1 . 



II ml 

 Is B 



Is 



ii g| 

 ||J 



6 „-^ 



•S »m 



1. Length from inter- 





























condylar notch to 





























anterior end of 





























skull 



200 



24-7 



23-6 



22 55 



22-3 



24-65 



24-7 



22-5 





25*6 







20-1 



2. Extreme width 





























across zygomatic 





























arches 



15-2 



17-6 



17-05 



16-75 



18-05 













19-9 



17-5 



14-8 



3. Vertical height from 





























suture between ba- 





























sioccipital and basi- 





























sphenoid to top of 





























sagittal crest 



7-8 



9-8 



9-95 



93 



9-6 



10-95 



10-35 



9-5 



7-9 



11-6 



10-7 



91 



8-1 



4. Width immediately 





























above lachrymal 





























foramen 



4-6 



61 



6-55 



61 



5-35 



6-65 



675 





5-6 



6-15 



6-6 



5-35 



4-25 



5. "Width between ends 





























of post-orbital pro- 





























cesses 



7-5 



8-0 



8-1 



7-4 



8-6 



8-2 



9-8 





7-2 



9-9 



8-5 



8-55 



8-0 



6. Width measured 





























from alveolar bor- 





























ders immediately 





























above last upper 





























premolars 



8-7 



11-3 



10-95 



10-7 



11-7 





12-6 







12-7 



12-4 



9-7 



8-15 



7. Minimum width be- 





























low foramen lace- 





























rum anterius 



0-9 



1-65 



1-75 



1-7 



1-6 



1-65 



1-65 



2-1 



2-05 



1-7 



1-7 



0-9 



1-25 



8. Diameter across oc- 





























cipital condyles . . . 



4-4 



5-2 



4-4 



5-25 



5-25 



5-6 



5-75 







5-6 







4-35 



9. Transverse diameter 





























of foramen magnum 



1-9 





1-7 



2-25 



2-1 



2-1 



2-2 







2-0 







2-0 



10. Maximtim diameter 





























of anterior narial 





























opening 



2-4 



33 



2-7 



2-8 



2-8 



3-4 



3-2 









3-2 



2-4 



2-15 



11. Maximum length of 





























right mandibular 





























ramus 



16-5 



19-85 



19-85 



18-7 



18-95 





18-85 



17-65 ! 





21-25 





18-45 



1615 



12. Transverse measure- 



ment of one condyle 



3-25 



4-6 



4 6 



4-1 



4-45 





4-4 



3-2 



4-1 1 



5-05 





4-4 



3-2 



13. Height from angle 





























to top of coronoid 





























• process 



6-35 



8-9 



8-7 



8-2 



8-05 





8-75 







9-9 





8-3 



7-05 



I am not aware whether these mandibles belong to the crania measured. 



b. Dentition (Plates IV, V). 

 (1) Distinctive Features of the Teeth in the Genvs Hyana. — The dental formula of 



Ilyeena is i. § c. \ pi 



as compared with i. f c. \ pm. f m. \ in Felis, and 



i. f c. y pm. y m. § in Cams and TJrsus. In the upper jaw the incisor teeth pro- 

 gressively increase in size, so that there is no such marked contrast between i. 3 and c. 



