442 DR. p. CHALMEllS MITCHELL ON LONGEVITY AND 



small size be considered. The apparent low viability of many of 

 these animals may be attributed partly to their fierce and active 

 disposition, from which it comes about that captured animals are 

 frequently young or feeble, and that after capture there is heavy 

 mortality from fighting and injury. But there is a marked efi^ect 

 of the mode of housing ; the ratels and badgers have been kept in 

 open-air enclosures, whilst a majority of the other forms have been 

 housed in small cages in dark, warmed and badly-ventilated 

 houses. 



Capt. Stanley Flower has no higher records. 



13 No. of Av. dur. Max. dur. 



rUGCYGNID^. j,j^j^,_ jjj months. in months. 



Procyon cancrivorus (Crab-eating 10 68 190 



Raccoon). 



P. Zotor (Raccoon) 24 50 165 



Nasua narica {White-uosedi Cod,ti) . 35 14 46 



i\^. TO/a (Ring-tailed Ooati) 63 12-5 62 



Cercolejites caiidivolvxdiis(JLh^ka>\o\\) 30 30 75 



^«ssaWs «si^i^« (Cunning Bassaris) . 5 10'6 29 



Bassaricyon alleni (Allen's Bas- 1 66 66 



saricyon). 



The Procyonidfe are another group regarding the potential 

 longevity of which we have no information. The record of nearly 

 16 years for a Raccoon shows that the group in this respect 

 resembles the larger mustelines. It is noteworthy that the 

 average longevity of the Raccoons, which have been kept out of 

 doors, is very much higher than that of the Coatis, which have 

 been kept indoors. 



TE'-r -,^-otTMi^ No. of Av. dur. Max. dnr. 



^aiiLURlDA. jj^^^j^_ in months, in months. 



JElxiriis fulgens (Panda) 2 32 64 



Ursid^. 



Ursus, whole genus 75 



U. americanus (Black Beai-) 12 



(J. arctos (Brown ,, ) 



U. horrihilis (Grizzly ,, ) 



U.isabellmus(l.ii&he\\\ne ,, ) 



U. japonicus (Japanese ,, ) 



U. inalayanus (Malay 



Cf. maritiTnios (Polar 



U. ornatus (Spectacled 



f7. j»i"scaior (Hairy-eared 



U. syriacus (Syrian ,, ) 



IT. tibetanus {KimRlajan ,, ) 



Melurstts ursitius (Sloth Bear) 9 



The duration of over 33 years attained by a Polar Bear may 



