﻿FELIS LYNX. 



175 



b and c, are increased in size, and the former defined from the primary, a, by a cleft ; and 

 from the cingulum by a notch ; a also is more trenchant and broader in the antero- 

 posterior direction. 



The sectorial molar presents absolutely no points of difference when compared with 

 that of F. borealis and F. cervaria, but, as before mentioned, it is differentiated from that 

 of the Canadian Lynx by the presence of the small accessory cusp, c, which is adherent to 

 the posterior base of the posterior blade, a. In the latter animal, moreover, the anterior 

 blade, b, is shorter as compared with the posterior, a. 



§ 4. Measurements. In the following tables we have arranged the measurements, in 

 inches and tenths, of the skulls and lower jaws most closely allied to our fossil. The dif- 

 ferences in size and proportions can be seen at a glance. In the last column of the 

 measurements of the lower jaw we have inserted those of the teeth, from a jaw marked 

 and found by Senhor Delgado 1 in the Casa da Moura, a cave in the Jurassic Limestone of 

 Cesareda. in Portugal, that had been inhabited by a tribe of cannibals, probably of the 

 Bronze Age. They agree exactly with those of our fossil, and therefore, although the jaw 

 to which they belong is smaller in every dimension than the fossil from Derbyshire, both 

 probably belong to the same species. The difference of size is not greater than that existing 

 between two skulls of Norwegian Lynxes in the British Museum. 



Measurements of Skull. 



Maximum height of occiput 



„ „ occipital foramen 



„ ,, exoccipitals 



Transverse extent of occiput 



Transverse measurement of occipital foramen 



Antero-posterior extent of condyles 



„ „ basi-occipital 



„ ,, zygomatic articulation 



Transverse ,, „ ,, 



Meatus auditorius to meatus auditorius 



Glenoid articulation to glenoid articulation 



Tutertympanic space 



Antero-posterior extent of tympanic bulla 



Encroachment of sur-occipital on parietal surface 



F. lynx, 

 P1.XXIII. 



F. lynx 

 {borealis), 

 Brit. Mus., 



1230 A. 



F. lynx 

 {cervaria), 

 Brit. Mus., 



1156 A. 



F. lynx 



{cervaria), 



Coll. Surg., 



4587. 



F. Lynx 

 {Canada), 



Oxford 

 Museum. 



1-81 



1-6 



1-62 



1-45 



1-35 





86 



•65 



•68 



•6 



•55 



1 



05 







•85 



•8 



2 



02 



2-0 



2-0 



2-17 



2-2 





79 



•7 



•66 



•65 



•6 





57 



•55 



•57 



•5 



•55 



1 



05 



1-08 



1-02 



1-02 



•85 





42 



•4 



•42 



•35 



•28 





98 



1-0 



•78 



•78 



•9 



2 







1-99 



2-0 



1-89 



1-6 



1 



88 



1-82 



1-86 



1-62 



1-6 





85 



•7 



•64 



•46 



•52 





92 



•95 



•96 



1-05 



•95 



■35 



•3 



•26 



•2 





' Commissao Geologica de Portugal. Estudos Geologicos. Da Existencia do Homem no nosso solo 

 em Tempos mui remotos provado pelo estudos das cavernas. Primeiro opusculo. Noticia acerca das 

 Grutas da Cesarada. Par J. F. W. Delgado. Com a versao em Francez, par M. Dalhunty. This jaw is 

 alluded to in the text as belonging to species n, and is figured in pi. ii, fig. 1. See also Bone Caves in Portugal, 

 ' Quart. Geol. Journ.,' No. 94, Translations and Notices, p. 9. 



