LÖNNBERG, TAXONOMIC NOTES ABOUT PALEARCTIC REINDEER. 17 



The lachrymal fossa is very shallow in R. t. sihiricus. 

 The upper molar series is a little, but not much shorter than 

 in the typical race. 



Although these differences are not so great as those be- 

 tween the typical Rangifer tarandus and R. t. fennicus as 

 shown above, they appear, however, to be quite sufficient to 

 justify the maintenance of R. t. 5?'&mcw<9 as a separate geogra- 

 phic subspecies. With regard to its dimensions it appears 

 that its smaller size depends mostly on its being more short- 

 legged than the Lapland Reindeer to judge from some mea- 

 surements of the leg-bones recorded by Nordqvist, for its 

 skull is, as may be seen from the table of measurements, 

 not smaller than that of the typical R. tarandus. 



Table of measurements. 



Basicranial length 357 



Distance from crista occipitalis to tip of pre- 



maxillaries ' 397 



Distance from crista occipitalis to tip of na- 



sals 302 



Length of nasals I 125 



Width of a single nasal at os supramaxil- | 



lare accessorium 



Width of a single nasal at the middle . . 

 » > » » » just in front of 



lachrymal vacuity 



Combined width of both nasals at os supra- 



maxillare accessorium 



Combined width of both nasals at the middle 



or at the narrowest place 



21 

 23,5 



36 



36 



33 



334 



374 



291 

 116 



14 

 13 



36 



27,5 



24 



Arkiv för zoologi. Band 6. N:o 4. 



