224 



THE SCOTTISH NATURALIST 



these have been carefully measured by Mr Hinton, so that 

 the figures given below are strictly comparable with the 

 earlier data. 



MEASUREMENTS OF SKULLS OF APODEMUS HEBRIDENSIS. 



In the upper half of Part I. of the above table, 17 dimen- 

 sions of each of the skulls from Barvas are recorded : these 

 dimensions are numbered as follows: — (i) condylo-basal 

 length ; (2) occipito-nasal length ; (3) zygomatic breadth ; 

 (4) interorbital constriction ; (5) cranial width ; (6) cranial 

 depth (median) ; (7) post-molar length, i.e. from condyle to 

 m^ ; (8) condyle to anterior surface of bulla ; (9) length of 

 nasals; (10) width of nasals in front; (11) palatal length, 

 from spine of premaxilla to posterior edge of palate ; 



