PEROMYSCUS, 173 
PAGE 
1, Above cinereous pale brown............... P, texensis 186 
j.. Above dark plumbeous slate............. P,t. arizone 186 
i DOVE Cark TAWH DOWN. 156-0 c eke ev P.t. flaccidus 187 
1.’ Above drab tinged with burnt umber..... P.t.clementis 187 
i AONE CULL WEY ode se ten eens nth yak vty COONEN. 18% 
n.’ Above pale cinereous drab............ P. t. deserticola 188 
B. Size medium, not under 190 mm. nor over 
230 mm. 
a. Tail longer than head and body. 
a, Above lipht broccoli brown...... 0:60.00 as P. tornillo 188 
De Ove DIshie LOW . ua hia au Pua ues P. gymnotis 188 
Or ON OOLIV EG WMD, occur e crcleina sr ace i weds P.r. pinalis 189 
d.’ Above pale yellowish brown and black. 
Rees. all 1 yu ane hes Ree a P. martirensis 189 
b.”” Sides fulvous. 
a." Supraorbital bead well developed. 
Be NSM STM ashiteresy ulsus bose sie ahh P. banderanus 189 
Bb. samibiessooty bide... i) oyu 6: P.b. vicinior 190 
b.’’’ Supraorbital bead obsolete........ P.b. angelensts 190 
 ADOVegrayisn Cheam DUM... 6 kia i.e its P. stephensi 190 
f.’ Above pale yellowish gray and black....... P.eremicus 191 
g.’ Above dark yellowish gray and black....P.e. pheurus 191 
h.’ Above pale ochraceous drab and black...P.e. arenarius 1091 
i.’ Above pale ochraceous buff and black...P.a. pectoralis 192 
j.' Above pinkish buff and dusky........ P. a. eremicoides 192 
k.’ Above mixed black and orange buff; tail 
EEN MUM ARMM a. avai got Kuta ses yn 0 P.metallicola 192 
1.’ Above dark brown tinged with pale fulvous. 
Ge eMGe OCULACCOUB. a uisi wu ves oe ies P. cedrosensis 185 
Pe SeIes DIM CIITAMIOM svc ikis'n sss co ae P. difficitlis 193 
Grr Sies TAWHY OCUTACEOUS . 5. wii nee eo wes P, bullatus 193 
aU Sides eramien prowmand DUT. i. o.aats P, sagax 104 
m.’ Above fulvous and black, lateral line ful- 
fC OM oS DS le Ra a se a P. yucatanicus 194 
n.’ Above darker, lateral line cinnamon ru- 
UOMO TRUER ne Cro eS a ee ee eee P.y.badius 194 
0.’ Above ash gray and black tinged with 
i EMail Pa a ane Wa P. cineritius 195 
Dae Ove SreVisit DIOWD nec ss ales earned wes P.levipes 1095 
q.’ Above mixed glossy brown and pale yel- 
HN Cot lib uf 6 tl eee a Rn ee a P, boylii 195 
r.’ Above drab gray tinged with ochraceous 
VT. . 2 On ey ee rae P.b. penicillatus 196 
