1871.] 



319 



[Wilder. 



exists, even with species of the same family and genus, as is shown 

 by the following table of the thoracic and lumbar vertebrae. The 

 conflicting statements of different authorities may be due to a differ- 

 ent interpretation of facts, but I am quite prepared to suppose that in 

 some cases, really individual differences existed between the speci- 

 mens examined. 



Table showing the number of trunk-vertebra loith Mammalia. 1 



LEMUR IDJS. 





D. 



L. 







Tarsius spectrum 



13 



6 



19 



Owen. 



Perodicticus Potto 



16 



6 



22 



" (or 15-7,-22). 



Stenops gracilis 



15 



9 



24 



" 



" tardigradus 

 Otolicnus peli 



m 



8 



24 



" 



13 



7 



20 



" 



" crassicaudatus 



13 



6 



19 



" 



Lichanotus Indri 



13 



8 



21 



" (or 12-9— 21). 



Loris 



14 



9 



23 



Miv. (or 15-9—24). 



Cheiromys madagascariensis 



13 



6 



19 



Owen. 



Arctocebus 



15 



? 





Mivart. 



Nycticebus 



16 



8 



24 



" 



Hapalemur 



12 



7 



19 



" 



Microcebus pusillus 



13 



7 



20 



" 



Cheirogaleus millii 



13 



7 



20 



" 



Lemur ( ?) 



13 



6 



19 



Owen. 



CARjSIVORA. 





D. 



L. 









Canis (lupus, rufus and familiaris) 



13 



7 



20 



Owen. 





Ursus (generally) 

 " labiatus 



14 



6 



20 



" 





15 



5 



20 



" 





Hyama vulgaris and crocuta 



15 



5 



20 



" 





Felis (generally) 



13 



7 



20 



" 





Procyon lotor 



14 



6 



20 



Flower. 





Nasua 



14 



6 



20 



" 





Meles 



15 



5 



20 



" 





Phoca groenlandica. 



15 



5 



20 



Owen (or 14, 5, 



-19). 



Stenorrbyncbus serridens 



15 



5 



20 



" 





Otaria 



15 



5 



20 



Flower. 





Crystophora 



15 



5 



20 



" 





Callorrbinus ursinus 



15 



5 



20 



Allen, J. A. 





Eumetopias Stelleri 



15 



5 



20 



" 





Putorius erminius . 



14 



6 



20 



Owen. 





Mustela zibellina 



14 



6 



20 



" 





Tricbecus rosmarus 



15 



5 



20 



" 





Mepbitis 



16 



6 



22 







Mebivora 



14 



4 



18 







1 Tbe materials are drawn cbiefly from four works; Owen, 63, 2; Flower, 71; 

 Mivart, Osteology of tbe Insectivora, Journ. of Anat. and Pbys.; and Mivart, Ost. 

 of Lemuridas, Proc. Zool. Soc, Dec. 12 1867. 



