Cones.] 



90 



[Jttne 2, 



animal hardly differs appreciably, if at all, from the wood rabbit. 

 The shortness of the tail, it will be observed, is due mainly to the 

 paucity of the furring, and not to the characters of the vertebrae 

 themselves. 



Nose to end of out-stretched hind feet 22.25 * 



" root of tail 15.00 



" end of tail vertebras 16.75 



" " " hairs 17.50 



" root of ear 3.00 



Length of ear 2.30 



Width " 1.70 



Length of eye (antero-posterior diameter) 50 



Elbow to end of middle finger 4.00 



Heel to end of middle toe 3.40 



Skull. In the following paragraphs the comparative expressions 

 used have reference to the cranium as related to that of L. sylvaticus. 



The skull, as a whole, is strikingly larger, as shown by the follow- 

 ing measurements ; and most of its ridges and sulci are more de- 

 veloped. 



Measurements. 



palus- 

 tris. syh'aticus. 



End of occipital platform to end of nasals . . 

 Anterior border of foramen magnum to incisors 



" " " " " palate . . 



Inter-paroccipital diameter 



Inter-squamosal " 



Inter-zygomatic " 



Inter-molar diameter 



Greatest width of nasals , 



Least width of frontal 



Length of frontal .* , 



" " nasals 



" " malar , 



Vertical diameter of foramen magnum . . . 



Width across occipital condyles 



Antero-posterior diameter of orbit 



Vertical diameter of orbit 



Greatest length of premaxillaries 



Width of upper incisors at base 



Length of anterior palatine vacuity .... 



Angle of lower jaw to tip of incisors 



Condyle of " " " . . . . 

 Height of. condylar process 



1 English inches and hundredths. 



3.081 



2.38 



1.33 



1.00 



1.10 



1.45 



.88 



.55 



.70 

 1.35 

 1.30 

 1.35 



.40 



.33 



.95 



.68 

 1.35 



.30 



.75 

 2.40 

 2.10 

 1.40 



2.80 



2.12 



1.15 



.70 



1.08 



1.35 



.80 



.55 



.70 



1.20 



1.18 



1.15 



.40 



.33 



.88 



.68 



1.30 



.25 



.70 



2.10 



2.00 



1.30 



