ROEEHTIA (Continued) 



Muridae— Micro tinae 



Arvicola schcrr.an 

 exitus (Arvicola 

 schernan terrestris) 



Sothenomys 

 nielanogaster 



Evotomys 



(Clethrionomys) 

 hedf erdiae 



Evotomys glareolus 



Clethrionomy s 



( Evotomys) rutilus 

 mikado 



Microtus agrestis 

 M. ag. orcadensls 

 M. arvalis 



M. incertus 



36s 18$ (1) X-Yo\ X,Y 



pre. or 

 post, in 

 ratio 50: 

 100* 



Matthey & 

 Renaud '35; 

 Renaud '38; 

 Matthey '38 



C.R.S.3. 120; 

 R. Suisse Z. 45; 

 J.G. 36. 



28^(1) X-Yo* Tcteishi '37 Z.M. (jap.) 49. 



55s 



28^(1) X-Oo" 

 27,28^(11) 



28 



1^(1,11) X-Xo 



Oguma'35a,^ Nippon Gakuzyutsu- 

 Eyokai 10; J.F.S. 

 Hokkaido I.TJ. Ser. 

 VI, 4. 



Makino & Igaku & Seioutsugaku 

 Shigemoro '43 4. 



56 s 



28o\l,ll) X-Yo\ pre Matthey & C.R.S.B. 120; 



Renaud '35; R. Suisse Z. 1*5. 



Renaud '38 • 



28^(1) 



Mpkino '49 Cyt. 15 . 



50s 

 42s 

 46s 



256^1,11) X-Yc*; Matthey '50 



25o.(l) pre; X-Xc_. 



Muldal '48 



23o\l,ll) X-Yc^; pre. Renaud '38 

 or r>ost. 



28-34^(1,11) 



Athias '12 



L.C. 53. 



From Matthey-Chrom. 

 des Vertebres,1948. 



R. S^isce Z. 45. 



Arch. Inst. Pact. 

 Camp. Pest. Lis- 

 honne 3« 



*Pre.=pre-reductional separit?on of X and Y, ^an^ly X disjoins from Y in I division. 

 Post.=post-reductionc.l separation of X and Y, namely X disjoins from Y in II division. 



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