MUSTELA 397 



6, 2 ?. Graftonbury, Hereford- W. E. de Winton (p). 11. 1. 3. 178-180. 



shire. 

 2 ?. Tring, Hertfordshire. Hon. N. C. Roths- 11. 1. 3. 182-183. 



child (p). 



6. Felden, Hertfordshire. 11. 1. 3. 184. 



1. Nr. Hounslow, Middle- W. Phillips (p). 60. 1. 23. 2. 



sex. 

 ?. Guildford, Surrey. G. Dalgleish (c &p). 4.4.3.1. 



S st. Horsham, Sussex. Sir E. G. Loder, 6. 7. 14. 1. 



Bart, (c & p). 

 (5,9. Mayfield, Sussex. C.H.B.Grant(c&p). 11. 1.3. 186-187. 



6. Selborne, Hampshire. Dr. E,. Bowdler 2. 11. 29. 1. 



Sharpe (c & p). 

 9. Whitchurch, Hampshire. W. E. de Winton 11. 1. 3. 185. 



(c & p). 

 S, 9. Buckland, Somerset. R. Hooper (c & p). 11. 1. 3. 190-191. 



9. Blandford, Dorset. J. C. Mansell Pley- 98. 5. 13. 2. 



dell (c & p). [Type of subspecies.) 

 2 9. Blandford, Dorset. W. T. Blanford' 11.1.3.188-189. 



(c & p). 



MuSTELA ERMINEA RIOIN^ Miller. 



1904. Putorius erminea Barrett-Hamilton, Ann. Scottish Nat. Hist., v, 



p. 203, October, 1904. 

 1907. Putorius erminea ricinx Miller, Ann. and Mag. Nat. Hist., 7th ser., 



XX, p. 395, November, 1907. 

 1910. Putorius ermineus ricinie Trouessart, Faune j\Iamm. d'Europe, p. 80. 



Type locality. — Islay House, Islay Island, Scotland. 



Geographical distribution. — Islands of Islay and Jura, off coast 

 of south-west Scotland. 



Characters. — Size a little less than in M. erminea stahilis and 

 about equal to that of M. e. sestiva : condylobasal length of skull 

 in adult male, 47 to 50 mm. ; mandible in adult male, 27 to 

 29 mm. ; zygomatic arches unusually wide-spreading ; posterior 

 extension of palate relatively wider than in any of the other 

 known forms. 



Measurements. — External measurements of type (adult male) : 

 head and body, 254 ; tail, 105 ; hind foot, 43 ; ear from meatus, 

 22. Two other males from the type locality : head and body, 

 270 and 270; tail. 111 and 114; hind foot, 47 and 46. Two 

 adult females from the type locality : head and body, 231 and 

 234 ; tail, 95 and 105 ; hind foot, 38 and 39. Two adult males 

 from Jura : head and body, 220 and 225; tail, 120 and 125; 

 hind foot, 45 and 46*5. 



Specimens examined. — Thirteen, six from Jura and seven from Islay 

 (B.M. and Cambridge). 



Remarks. — ^While readily distinguishable from the large true 

 stahilis of England, the Islay and Jura stoat will probably prove 

 to be more nearly related to the smaller form occurring on the 



