xxii 
PAGE. 
Rhithrodontomys c. toluce ...258, 266 
Rhithrodontomys colime . 258, 266, 267 
Rhithrodontomys c. nerterus ..258, 267 
Rhithrodontomys costaricensis . 
Beilin sa Stand e 6 ae ae le 258, 267, 268 
Rhithrodontomys c. jalape ...258, 267 
Rhithrodontomys creper...... 258, 272 
Rhithrodontomys deserti ........ 259 
Rhithrodontomys difficilis ....257, 263 
Rhithrodontomys dorsalis ...:258, 272 
Rhithrodontomys goldmani ...258, 268 
Rhithrodontomys griseiflavus .258, 270 
Rhithrodontomys g. helvolus ..258, 270 
Rhithrodontomys hirsutus 258, 269, 270 
Rhithrodontomys inexpectatus 258, 271 
Rhithrodontomys levipes .258, 270, 271 
Rhithrodontomys 1. otus...... 258, 271 
Rhithrodontomys 1. toltecus ..258, 271 
Rhithrodontomys longicaudus .... 
ery Serre ey 257, 259, 261, 262, 263 
Rhithrodontomys 1. pallidus ..257, 262 
Rhithrodontomys megalotis ...... 
a epnirn borer aiehe 256, 257, 259, 260, 261, 262 
Rhithrodontomys m. obscurus.257, 261 
Rhithrodontomys m. sestinensis . . 
/ 
Rhithrodontomys m. zacatece 257, 
Rhithrodontomys mexicanus . 
Eee ss ticks 257, 264, 265, 268 
Rhithrodontomys m. fulvescens 
Rhithrodontomys m. gracilis . . 
Rhithrodontomys m. intermediu 
n 
Seshs 61a ynYeu 9 tN a Rn), eather TC 2 5 Mean 
Rhithrodontomys microdon ...258, 269 
Rhithrodontomys m. albilabris 258, 269 
Rhithrodontomys orizabe ....258, 266 
Rhithrodontomys peninsule . .257, 263 
Rhithrodontomys perotensis ..258, 266 
Rhithrodontomys rufescens ...258, 268 
Rhithrodontomys saturatus ...... 
Re it = Ae a « 257, 262, 263, 264 
Rhithrodontomys s. alticola ...257, 263 
Rhithrodontomys s. cinereus ..257, 262 
Rhithrodontomys tenuirostris ...... 
URS MRIOE ss ss. os 1 258, 208, 260 
Rhithrodontomys t. aureus ...258, 269 
Rhithrodontomys tenuis ......258, 265 
rhydinorhis. 
INDEX OF LATIN NAMES. 
PAGE. 
richardsonix © (Seirus) . -. Sees. 128 
richmondi. (Didelphys) ....... 14, 16 
richmondi. (Oryzomys) ..... 235, 248 
richmondi. (Sciurus) .....94, 103, 105 
Tigidus. (Gepus) sue... .. >see 419 
Tigidus. -(Spiurds)) ieee... .. sae 127 
ringens. (Eag@assa poy... ... fae 66 
Tingens. (Tawasst ie: . ose 66 
Rodentia. iS esti..<ceeeeeee « <-e ee 89 
Romerolagvsiy... .Geaeee.... . oa 411 
Romerlagus digzi <i7 gee. »..5 2a 412 
Romerolagus nelsoni ......... 411, 412 
Rosmaris ‘sais seen cs Cae 36 
rostratus. (Heteromys p.) . ..375, 378 
rostratus. ~(Gigmys pays... . <i 378 
rostratus. (Oryzomys) ..235, 243, 244 
rostratus. (Perognathus p.) ..357, 359 
rothschildi. (Coendu)........ 400, 401 
rothschildi.. Qaim) aie ee. 744 
rothschildi. (Odontoccelus) ....69, 72 
rowleyi. (Peromyscus) ......... 18Q- 
rowleyi. (Peromyscus b.) ....... 196 
ruatanica. (Dasyprocta) ........ 405 
rufescens. (Rhithrodontomys) ... 
WEEP fe hr 258, 268 
rufescens. (Thomomys) ........ 332 
fufinus. (Cervusysc..... sae . 79 
fufinus. (Orygzomvys j.) .. cae 235, 247 
Tufinus. (Peromiyseus) ...ceen ..: 179 
fufipes. (Sciustis)mee....cmeees ole ee] 
fufiventer. (Sciurws) ... ae. . 2 rts 
fufoniger. (Scitufus).c.2. eee . . os 104 
rufus. (Oryzomys) ...:...234)0me 
tupestris. (Citellus v.)....... I4I, 150 
Eussatus. (Leptus) osm. 417, 420 
SHECOMYS ..., . .sinc ss > Onl 368 
maecophorus . .</ov.) sees >. ae 310 
sagax. (Peromyscus) ........ 173, 194 
salvini. (Heteromys) ........ 369, 370 
sanctidiegi. (Lepus)......... 417, 422 
sarcovienna. (Chironectes) ...... 3 
Sartor: (Cervits)i.c ene - Sees 8o 
Sactori. (Mazaia) ite... san: 79, 80 
saturatior. (Oryzomys Cc.)....234, 239 
saturatus. (Rhithrodontomys)... 
Presi <5) +) ee 257, 262, 263, 264 
saturatus. (Sigmodon h.) ....222, 225 
saxatilis. (Peromyscus m.)...174, 207 
saxicola. (Citellus h.) ...139, 140, 142 
saxicola. (Spermophilus h.) ..... 142 
