320 PLATOGEOMYS. PAPPOGEOMYS, 
NEGLECTED PocKET GOPHER. 
Type locality. Mount Cerro de la Calentura, eight miles northwest 
of Pinal de Amoles, State of Queretaro, Mexico. Altitude, 9,000 feet. 
Genl. Char. ‘‘Size small for a Platygeomys; general appearance 
and characters as in P. planiceps, but color paler and duller (less 
chestnut) ; size smaller; rostrum and nasals shorter; frontal flat inter- 
orbitally (not elevated on each side over the orbits); zygomatic 
arches parallel (instead of strongly divergent anteriorly); jugal light 
and slender, its faces not strongly developed.” 
Measurements. Type. “Total length, 310; tail vertebre, 96; 
hind foot, 42.’ (Merrs, 172) 
65. Pappogeomys. Ancient Pocket Gophers. 
lL; P=; ee 20. 
Pappogeomys Merr., Mon. Geomyide, N. Am. Faun., No. 8, 1895, 
p. 145, pls. and figs. Type Geomys bullert Thomas. 
Molars with enamel pattern of Geomys, and the incisors unisulcate, 
as in some other genera, 1. e., Cratogeomys, etc. Sphenoid fossa 
shortened by the orbitosphenoids; mesethmoid higher than long, and 
with the lower edge extending between wings of vomer posteriorly; 
zygomata slender; upper premolar with but three enamel plates; 
first and second upper molars with two enamel plates each; last 
upper molar has a single exterior sulcus; upper incisor with a single 
deep median sulcus. 
KEY TO SPECIES. nice 
A. Size small; tail naked; occiput extending con- 
siderably beyond lambdoidal suture. 
a. Above rusty chestnut, beneath paler........... P. bullert 320 
b. Above pale plumbeous tinged with chestnut; 
beneath paler : Afar... meet cos, ot Sea P. albinasus 321 
320. bulleri (Geomys), Thomas, Ann. Mag. Nat. Hist., 6th Ser., x, 
1892, p. 196, August. 
nelsont Merr., Proc. Biol. Soc. Wash., 1892, p. 164, September. 
BuLLER’s Pocket GOPHER. 
Type locality. Near Talpa, west slope of Sierra de Mascota, State 
of Jalisco, Mexico. Altitude, 8,500 feet. 
Geogr. Distr. State of Jalisco, Mexico. 
Genl. Char. Size small; tail naked; occiput extending consid- 
erably behind lambdoidal suture; nasals narrow; premaxille short, 
rounded posteriorly, and just reaching plane of orbits. 
Color. Above rusty chestnut; under parts paler. 
