322 



Measurements of eight skulls of Felis concolor- 



Locality. 







'73 



,a 



fee 



2 



hi 



^ 



7.40 



5.25 



7.50 



5.05 



7,80 



5.15 



7.75 



4.95 



7.50 



5.00 



8.40 



5.35 



8.50 



5.60 



8.75 



5.50 



Eemark.s. 



3811 



8597 

 3267 

 1148 

 1356 

 1355 

 1895 

 1158 



Essex Cotmty, Ifew York 



Paget Sound 



Oregon , . . . 



Eagle Pass, Texas 



Eio Grande, Texas 



do 



Brazos River, Texas 



Prairie MerKouge, Louisiana. 



Old. 



Quite immature. 

 Do. 



FELIS PAEDALIS. 



Fourteen skulls of Felis pardaUs show a most decided southward in- 

 crease in size. A series of live skulls from the Lower Eio Grande aver- 

 age about an inch shorter than another series of nine from Southern 

 Mexico and Central America. The largest of the Eio Grande skulls has 

 a length of 5.25, while the smallest of the Mexican and Central American 

 series (excluding one rather young specimen) has a length of 5.20, and the 

 largest a length of 6.20. The three largest (6.00 to 6.25) are from Costa 

 Eica, while one other from Panama and another from Surinam are but 

 little smaller. The "smallest of the Eio Grande series (a rather young 

 specimen) is but 4.50 in length ; the smallest of the tropical series (a 

 specimen of corresponding age) 5.35. 



The difference in size with locality is thus as great in this species and 

 in Felis concolor as it is in the Wolves and Foxes ; but the increase 

 is in the opposite direction, — to the nortJiivard in the former and to the 

 southicard in the latter ; the one group being a northern tyj>e, the other 

 a tropical. 



Measurements of fourteen skulls of FE1.IS VARDAU.S. 





Locality. 





n 



.a 



Eemarks. 



1363 







4.50 



4.90 



5.05 



5.20 



5.25-. 



5.60 



5.70 



5.50 



5.85 



6.00 



6.00 



6.20 



5.35 



5.80 



3.05 

 3.35 

 3.35 

 3.50 

 3.40 

 3.75 

 3.55 

 .3.70 

 3.80 

 3.73 

 3.94 

 4.19 

 3.60 

 3.83 



Mature but not very old . 



1362 



....do 





1361 



do 







1359 



do 







1358 



do 







6023 









7080 









13852 









11743 









14182 



Costa Kica 





Very cid. 



14179 



do 





Do. 



14180 



do 





Do. 



14178 



do 





Adult bat not very old. 



13005 







Very old. 









LYNX EUFUS et LYNX CANADENSIS. 



In the subjoined table are given measurements of thirty-four skulls of 

 North American Lynxes, namely, seven of L. fasciatus, ten of D. riifus, 

 eight of L. maculatus, and nine of L. canadensis, representing localities 

 as distant from each other as Alaska and Northern 3Iexico on the one 

 hand, and New York and Fort Tejon, Cal., on the other. Yet the 



