RELATIVE VIABILITY IN MAMMALS AND BIRDS. 431 



CeRCOPITHECID^ (cOWf.)- ^°;°^ .Av.dur. Max.dur 



\ ' Indiv. Ill months. in iiioiitlis. 



Cercojnthecus sahceus 109 7 43 



(= callitrichus) 



C. (ethiops {= griseo-vmclis) 24 14 60 



C. cynosurus 59 13 87 



0. tantalus 5 15 37 



G. jyygerythrus {= lalandii) 146 8'6 59 



C.talapoin 15 13-8 34 



C.patas 40 6-9 27 



C. 2Jyrrhonotus 9 5"5 16 



C er cocebus, vf]\o\Q genns 85 12"2 48 



(Mangabey.) 



C. cethiops 15 7-5 48 



C. albigena 15 10*3 42 



C. atemmus 1 5 5 



C. coUaris 15 12 38 



C. chrysoga^ster 1 12 12 



C.fidiginosus 36 16 40 



C. hagejibecki 2 8 10 



The Cercopitheques and Mangabeys for the very large number 



of individuals recorded thus show an average duration of about 

 one year; the best record, about ten years, must be taken as far 



below the potential longevity of the group, and it is clear that the 

 conditions of captivity press hardly on them. Throughout the 



period in question, they were treated as animals which must be 



protected against cold, and they were allowed no access to the open 

 air, 



- No. of Av. dur. Max. dur. 



Indiv. in months. in months. 



Macacus, whole genus 910 14 143 



(Macaques.) 



M. assamensis 1 5 5 



M.brunneus 5 12-8 22 



M.cyclo2ns 2 20 26 



M.cynomolgus 328 16-5 130 



M. lasiotus 3 28-6 41 



M. leoninus 7 18 27 



M. nemestrinus 58 20 62 



M.2)elops 3 10 16 



M.pileatus 21 10 27 



M. rhesus 212 16-6 143 



31. tcheliensis 3 5*3 7 



M.siUnus 16 30 119 



M.sinicus 203 13 75 



M. speciosios 4 41 104 



M. maitrus 7 18 73 



M. arctoides 2 16-5 19 



M. rvfescens 2 8 15 



M. ocreatus 9 11 28 



M. inuus 24 12-3 38 



