Mist OF ILLUSTRATIONS OF CRANIA IN THE TEXT. 
Fic. 
ow AN Ww NH 
VOLUME IV. PART I. 
PAGE 
ete lated SIA LIRLTEISIG) 8g ch Sw <a ar A har Screen eS Sense fara pda 2 
_ LEE GE DCSE Tel cht aR oy SAA ee Pg 4 
BME TIS MM SCOOTISCUS 2.2125 ba.cyt cose tee Ge ete Oss cesastie s ene II 
anne UMS NEN SAAT ALOUD 9 = geting ccs 6 ww Bie Eom ws gts eens, bat 20 
Bradypus infuscatus ......... Saat Se aghast ae age ys cK ex le 22 
ERR UE TREN oy faa ctl, Shs SS Sho cid vars mutta D ehdin 20g We Suni she Oe erees we 25 
MMII SEMT CREOLE, aot say te NepaFe arc P Oia BA Gras mils tev chet ln eon 27 
arPOmePMArA ICAehy la. 2)... ..1.: onings ows ok wate so seh ee SA Se 20 
SRR SISICPIE ISIN 3 cS. 5. x 9 oes ava pa Sige mel ayia eG lens sha whee ee 33 
RRR ANCESTRIES AE Nin a oy tice x He eis Me ee BS nae ha ee eh eke ae 39 
NE Rate Reread ATIC EMT ANIG ND 2 oo5 oar! aS ~ pis aed a xa artn ns nas alee ee See 44 
AMET HACIECSE ES PIV OCIIIS 5. 5 5 oan u:'d 5. < Braiden, wim 5 /epl Sve e ys one hi nes Sim en 92 
Petits (MiCEOSCIUIEUS) DFOWDE won assem 1 os esse eee sees Suen es (ere) 
ECE ASORCRALIIS) CELIPIIL «5: ssa «elvis Sr wins anp usa) ex awe ae mals IOI 
Piece (TEOTUNSUCTUS) 22. DOMMAMMI oe ew 6 ole tdi ofa de gta ge 103 
Semmes: (EP POSCIGTUS) NA VATIGSNEIS «oka bee oo de Os kyle Sb a 106 
BEmeHS (AL ASCIULIIS)) 14 TERCMSIS 61h c0e ale iss 6 cio aac Sole ae oe. ai III 
PUSMesn Ita (OCOSCIITIIS), CATA ON i. Sarge 5 eels s acai sn thaepaeedene oe wate) Oe ke 1r2 
Eeiatics (ECOINOSCHITUS) ATIFCIBASLET 3.0 2 os ose aE i ee sme se Se Os oe 113 
SRPMS (ELCSDETOSCLUTUS) PTISEUS 22.06 cis 0 oe was os ee ace heehee a ge a ie 
Memaris: (Patniascsurus) d. SCANS . 2 2. <)..5 sae oe, hee ne oe sie tn 132 
MEINERS ISLES 2, Rah ed ee sy See Le satin g ain Sart & Aa © Fa eiecs hie oe 134 
Gitelias (Animospermophilts) bh. saxicola: . 2.2.5. cee dee ee twee 139 
Citellus (Ammospermophilus) 1. peninsula ....................... I41 
tucelus (Xerospermophilus) microspilotus .......-...2.-05 505003. 144 
Saelus (Callospermophilus )madrensis... 0... oc. ches ee ee wees 147 
Srtcmus (Otospermophilus) variegatus.. .. 2... 656 62. lee ene ene 148 
RU saNCO LUN SH INT CLOMICLATITIS ote us drop ey neat Est aoe A coegishouse +1 29 Gp NG S ices 6 OS kde ys 154 
Rae TERIOR AEG AGT) Ee rcta a. lg cs ck ENS Ee eS AEs So Gane 157 
MES Re EMEMA GIL CR ts Dears Bae ors Suds Wine te a, iS a eetoa nis Sole WN 160 
SE TEE St RS re eg De tes Porat pv aye ete Se ra eee 163 
Deans RETIN CS WCET RUS cca, 22 wg oe Be isha. seiko eee eis ee ans dn Geen oe 166 
(PLAS Seip at gg 0 Rn A big fe 
SCC AU ETEITE GS) CRROTISAGE <a pcs loyaei we Aint Sool geese a ke ane le er eale 2 ets 213 
Rees PREG SELTEEIC TASES 5 102.2 ie Qiaeip hts Ulluis adn ae Sele aed ey aee eh 215 
LESR EPS S00 Ce SEE 1 3 Ur oA RS PR a 218 
UPI CUS ari Gia) ee | 0) i ae Np ae A CD, PA Oe eRe 220 
SCALE G2 2 ora! oy 2 eR a eA oe SEE Oe SRP CR OER aii Petra ar 223 
PMCS GOStAMREDSIS Cl) re pe os een o nia oe Vein es ee 5 Meera tus 233 
Sirgcaies (OUSLY ZOMYS) VESCHUS \ of 2 Sea bl 5 eit aPa ry es ere 249 
Peta OT Ont VS COSTAE OS OL. oe ova as fl star Seb Ss wel Buen ARI oe Cee 251 
RAPT TD TS CEE EE hs, S020 Soy ci eee psc ovakh Eo # fn lolae'D meh, pieyecdip) SNe 252 
IsPrRedoniGnHays MICeAMIONS: .2<. (9s sce dee eels ace ors Lees 256 
PRUE AGI te AO ee ees eh ade ie Be ass I PES ate Wa ealass kG 278 
