464 DR. p. CHALMERS MITCHELL ON LONGEVITY AND 



MARSUPIALIA. 



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



MACROPODID^. I„div. i„ months, in months. 



Macrojius, whole genus 200 



M. agilis (Agile Wallaby) 5 



M. hennetti (Bennett's „ ) 35 



M. hillardieri (Red-bellied ,, ) 7 



M. brachiurios (Short-tailed Wallaby) .. 15 



M. derhianus (Derbian ,, ) ... 19 



M. dorsalis (Black-striped „ ) . . . 8 



M. giganteus (Great Kangaroo) 30 



M. melanops (Black-faced Kangaroo) ... 13 



M. parryi ( Parry's Wallaby) 1 



M. rohustus (Great Wallaroo) 15 



M. ruficoUis (Rufous-necked Wallaroo) . 6 



M. rufus (Red Kangaroo) 30 



M. thetidis (Thigh-striped Wallaby) 4 



M. ualahatus (Black-tailed „ ) 12 



Petrogale, whole genus 44 



P. hrachyotis (Short-eared Kangaroo)... 1 



P. jt*e?WCT7^«i{a (Brush-tailed ,, ) ... 15 



P. xanthopus (Yellow-footed Rock 28 



Kangaroo). 



Onychogale frenata (Bridled Wallaby) ... 12 



O.unguifera (Nail-tailed „ )... 6 



Dorcopsis hictuos'us (Mourning Kangaroo) 1 



Z>. miiZ^eri (Muller's Kangaroo) 1 



Dendrolagus inustus (Brown Tree Kan- 1 



garoo). 



D. hennetti (Bennett's Tree Kangaroo) . 4 



jEpyprymmis rufescens (Rufous Rat- 19 



Kangaroo). 



Bettongia, whole genus 24 



B. cuniculus (Tasmanian Rat-Kangaroo). 3 



B. gaimardi{Ga,iviiSivdiH „ ,, ). 15 



B.lesueuri (Lesueur's „ ,, ) . 3 



B. penicillata (Ogilby's ,, ,, ) . 3 



Potorous tridactylus (Common Rat-Kan- 5 



PHALANGERIDiE. garoo). 



Dromicia nana (Dormouse Phalanger) . 4 



Petau7-us, whole genus 48 



P. australis (Yellow-bellied Phalanger). 2 



P. hreviceps (Short-headed „ ). 32 



P. scmreus (Squirrel-like ,, ). 14 



P seudjOcMrxis peregrinus (Ring-tailed 1 



Phalanger). 



Trichosurits, whole genus 71 



T. canimts (Short-eared Phalanger) 1 



T.fuliginosus (Sooty ,, ) 7 



T. orientalis (Oriental ,, ) ,. 1 



T, vulpemla (Vulpine ,, ) 62 



Phascolarctos cinereus (Koala) 3 



