XXIV 
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. Wing-structure of Chionts alba ........ 0. sees seen ee eee 156 
24. Diagram of intestinal pattern of Rhynchea capensis .......... 157 
25, Diavram of intestinal pattern of Hydrophastanus chivurgus .... 158 
. Shoulder-muscles of Gtdicnemus scolopav ....... eee veen, 159 
pBicepsior (OA7a7ts) a 10c: iterate elke ffenestr 161 
DS, Wine ners or Claws GL cooacecnnogcndcen00gs2055 05% 166 
} Wileyniart MIGROS aA s eo aso ucokoo cud oes eweBaae OD 3 ea ee 193 
. Diagram of the distribution of 250 Mexican species according to 
WA WRAVECTEN Cn toe cene a eR RENS eSNG tio BLO: O DIG ERO ERS PNP se 39:9 020 "0 229 
. Diagrams to illustrate the contours of Mexico at different geo- 
ios Gell: SYS as ota, cal erecinoip.2.ckaie sean Mibtbhele ohare ReO oe Acre o's 235 
2, Diagrams to illustrate the contours of Mexico at diferent geo- 
logical CEC ah cient tan cen as DIA ee GSS MTOM SO Octo > 236 
. Liver of Gerrhosaurus flavigularis, ventral aspect ............ 259 
. Liver of a second example of Gerrhosaurus flavigularis, ventral 
AGUOGE cooocrongooonaoracaopgnsee000b000 aianeacsasekaroteeaene 259 
. Gastro-hepatic ligament of Gerrhosaurus flavigularis, showing 
COUMNS Ort wemsomllaye lyme, co ceanAcancaccucascasdoauover 261 
36. Pancreas of Lacerta ocellata and of Gerrhosaurus flavigularis .. 262 
. Aortic arches and first part of dorsal aorta of Gerrhesaurus 
LORUTOUNDIOS “a obavccseosecbaasonsaasasccanguvaeconacoar 268 
. Abdominal region of aorta of Gerrhosaurus flavigularis ...... 264 
. Lateral view of brain of Varanus exanthematicus and of Tupi- 
JOCHMOS TOU SUIVOKDUIS. ga got ecg egoeoosoooebensanouaene 268 
. Dorsal view cf brain of Varanus evanthematicus ............ 268 
, Whe ka OP AlGDMOS COUOMUB soo 00cncscedcossbccoucecadan 981 
2), hs jalan Grvslenmays ooo asdpockoaheacoosnnaso ses boo 0G0- 282 
3. A section of a portion of the placenta of Acomys ............ 983 
. A section through the junction between trophoblast and tropho- 
sponpia of Acomys ......... 220 eee eee eee eee ee 284 
. A diagram of a section through the centre of the placenta of 
ACT Gs o one 000 poganeon an sorb de soaedsassaaenoncodeoe 285 
. Supposed clavicula of Diplodocus ..................... 0005 290 
, Seine Ione Git IDG WOCOGNSs onc osc on ns codon cs edooecsopodbor BOO 
. Diagram of penis of Struthio ..... 66. eee eee eee eee 291 
. Os penis of European Otter ................. 0. seen eee 292 
5), Wine Sages cadhens OF Uwlhyms 0. sb sccooocanseaassneccsoccs 299 
51. Early figure of Chimpanzee, from Astley’s ‘Travels’ ........ 301 
52. A, lateral, and B, upper view of the skull of Vulpes ferrilatus.. 304 
53. A, upper, and B, lower right molar series of Mecrotus waltoni.. 307 
Rul, Wing lBlaelke Cineneves (COMO SHUICUS) sob ehoccoeenct dns ses6e 325 
55. The Mantled Guereza (Colobus palliatus) ..................5. 326 
56. Sharpe’s Guereza (Colobus sharpet) ..... 1.60... eee eee eee, 527 
57, The White-tailed Guereza (Colobus caudatus) ........6.++.. 327 
58. The White-thighed Guereza (Colobus vellerosus) ..........45 328 
59, Principal arteries of Hatteria ..........----+++2++s+2 sees 463 
60. Anterior abdominal and portal veins of Hatteria ............ 465 
61, Heart and aortic trunks of Ophisaurus, to illustrate mode of 
OMIM, Oh CAMOUCL A bebgduoe cvcodcodadaceanccannecansaac 469 
