17(j uri/r.riN ui, umtkd siaiks nationai, .mi-.si;ijm. 



Tliese variclios iin', however, not dilliciilt to ireo^jiiize, csiu'ciiilly as I 

 have observed, the S. r. viontaiius. 



I'iDlioiliiiiKil (liiin unions of yo.:^f''.i7. 



Ili'iiil: 



Lcn^-tli of },Miic oliiHiiitli In ilH widlli alioiit lialf. 



WiilMi l.Miisliiii.- Iiniii sii.mMi.^'iiliirroia idiiliiiii.Ml II (iiiioH. 



Wiillli toilisliiiicc liimi siioiit to M;ioiii alMiiit C tiiiu-H. 



yi. m snmit to ^'iiliir foM coiiliiiiH'd in ilmtaiico IVom smiiit to ;;ioiii 1} ti ,s. 



Distaiicf aiili'iiorl.v lnl wmi ryts in I«'ii},'lli of oiliit 'i orliits. 



Di.staiicf from cyrs to nostrils in icii;,'lli of orl)it 1 orliil. 



Distunci' liclwc.'ii fxtrrniil noslriis in ]cii;,'th of orUit abont 1 orl>it. 



Distantf IntwiTii internal nostrils in !i-nj;lli of orliit ii'ss tlian 1 orliit. 



Limits: 



Fri'c portion of Ioi»<;ost liii;;i'r contairnMl in ilistanci! from cIIhiw to tip. I times. 



Fri'e portion of loiif;ewt toe toiitained in distaiiee from knee to tip l! times. 



Distance lielwei n oiitslrel<lieil toes in hni;tli from snoni to ;;roin oih'-lialf. 



Tail: 



Length iVotn lieliind anns to rest of animal I ■; tnnes. 



I,enf;lli from lieliind .inns to total leii^'tli I wo-liftlis. 



IJod.v : 



Width compared with that of head rather liroader. 



Nnmlier of costal furrows (including' inj^ninal) 1'.. 



M<(inii)'( iiii'iit.i of .\<>. I!"^!!", ill iiiilim, 



L('n;,'lli, measured alon;;: axisof liody : Itody : 



I'roni siioiii to >;ape "JH j ('ircnmferer.ee td' lielly 'J. ir» 



From snont to <;nlar fold 70 > |)ist:ince lietwivn armpit and 



From snoiiMo ainiiiil 1.0(1 i;roin •,'. Ill 



From snout lo j;roin If.OK Tail: 



From smiiil to Ixdiind anns. ... It. .'id llei;;lit of tail where lii;;he.st .. . .15 



From .snout to end of tail -t.W l!re;nltli of tail where |ii;;Iiesl . . .10 



Head: Limits: 



Width of he.id rt.'i i I'ni! portion of lon;;est linj;er.. .10 



Width of lonjiiu' ti'2 \ From 4'lliiiw to tip of louf^est 



Lenj;lh of nrliil .11 lin;;er 10 



Dislaiice lietween eyes ante- Free port ion of lon;;eHl lot- 1.^ 



riciily 'Jt'i From kiu-o to tip of lon<{est toe. ..'if 



DistaiM'c lielweeii outer nostrils. . l.'i 1 Distain'e lietween onlstreteh<'d 



IMstanee lietween in rnostril.H. . I'i I toes l.I'iO 



Spilcrpcs ruber Jia vinxiin us 1 1 allow. 



I'unidotritini lliiriKfiimiis Hallow., Proceed. Ac, Nat. Sci, I'hila., l-'.'iO, i:(0. 



Tlie I'urm and pro[)ortioiis, e.xeeptinfjr about the head, are so .simi- 

 lar to those of IS. ruber, that it i.s uimeeessary to repeat these eharae- 

 ters. The tli},'it8 are rather lowg, as usual in yoiinj; .S'. ruber. The outer 

 ones, hv)wever, appear proiMtrtionall.v l()n<;cr tha!i in the lattei'. The 

 head, viewed from above, is narrower and more triineaie. It is arched 

 imt not wedo:e-shaped, depre.ssed, the mnz/.ie bein^ much hiolier than 



in S. ruber. lOaeh side of the tri' »ted snout is bordered by a vertical 



ridof, which is a little exterior tt ; outer nostrils, and descends a 



I ' . 



/ 



Mead: 



J'eil,:;lll, 



I'roM 



I'loiii 



iw'on: 

 l''i'oni 

 I'roin 

 I'riirn 

 'fail.. 

 lie.id: 



Wi.lth 



