50 MR. OLDFIELD THOMAS ON MAMMALS [Feb. 4, 



and therefore nearly a millimetre longer than those of the more 

 northern U. t. hondonis, measured equally on winter specimens. 



Dimensions of the type : — 



Head and body 89 mm. ; tail 34 ; hind foot 15. 



Skull — greatest length 26' 5 mm. ; basal length 22'3 ; greatest 

 breadth 13. 



Hab. Tsu-shima Islands — type from Sasuna, N. Island. 



Type. Adult male. B.M. No. 8.2.26.1. Original number 1243. 

 Collected 16th January, 1907. 



" Fairly common in damp wooded ravines in Tsu-shima, where 

 it was often trapped beneath or beside large stones. Insects are 

 often among the stomach contents, and here no vegetable matter * 

 was recognised in their stomachs, but one example was caught in 

 a trap baited with barley." — M. P. A. 



A renewed examination of the fine series of Urotrichus obtained 

 by Mr. Anderson in the Japanese Archipelago shows that each 

 of the three main islands has a form which may be subspecifically 

 separated from the others, and that Tsu-shima has a fourth. 

 Their characters are shown in the following synopsis : — 



A. Tail comparatively long, averaging: about 33 mm. 



a. Size larger, head and body 90-101 mm. Colour 



dark brown. Kiu-shiu 77. t. talpoides Temm. 



b. Size smaller, head and body 84r-91 mm. Colour 



paler brown. Tsu-shima II, t. adversus (supra). 



B. Tail comparativelj^ short. 



c. Tail averaging just over 30 mm. (range 28-34). 



Colour brown. Shi-koku U. t. centralis {inirk) . 



d. Tail averaging 27 mm. (range 23-30). Colour 



slaty-grey. Hondo U. t. Jiondonis (inirk). 



The series on which these averages are based are from 15 to 

 22 in number, and are therefore large enough to eliminate any 

 material error due to individual variation. 



Details of the Shi-koku and Hondo subspecies : — 



Ueotrichus talpoides centralis t, subsp. n. 



Size averaging rather less than in true talpoides, larger than in 

 adversus (head and body 90-97 mm., the majority of specimens 

 92-95). Tail decidedly shorter than in either talpoides or adversus 

 (average of 22 specimens 30'75 mm,, extremes 28-34). Fur 

 about 6 mm. in length on the back (winter). General colour 

 deep brown, darker than adversus, lighter than talpoides. 



Dimensions of the type : — 



Head and body 94 mm, ; tail 32 ; hind foot 16 ; upj)er tooth- 

 row 11 •2. 



Hah. Island of Shi-koku. Type from Jinrio, Tokushima Ken. 

 Alt. 500'. 



Type. Adult female. B.M. No. 6.1.4.68. Original number 

 289. Collected 14th February, 1905. 



* Cf. P. Z. S. 1905, ii. p. 341. 



f Central as compared to other forms, both in size, colour, length of tail, and 

 locality. 



