HETEROMYS. 369 
horizontal, flat; tail long, exceeding body and head; soles hairy, 
with five tubercles; pouches covered with hair; tail scaly, short hairs 
from between the scales. 
A. *Heteromys. 
ney LO-THE SPECIES AND SUBSPECIES OF THE SUBGENUS. 
A. Pelage harsh; flattened spines present. 
a. Soles hairy, 5-tuberculate. PAGE 
a.’ Above mixed grayish yellow and black....H.trroratus 369 
b.’ Above grizzled smoke gray and yellow...... H. bullert 369 
b. Soles hairy, 6-tuberculate. 
a.’ Above grizzled black and yellowish........ H. saluvint 370 
Dp. Above dark smoke brown............ H. s. nigrescens 370 
e uapave Gark smoke oray.... 2.2. ¥..-..5.5. H. gaumert 371 
Seem bowe DIdCKIcn DIOWN. .. 5-10.25). cose H. annectens 372 
Sa rnawe Teddish DrOWN. 2's. 6-40 4.s. 202. H.hispidus 371 
ec. Soles naked, 6-tuberculate. 
a Above chestnut brown............. H. desmarestianus 372 
Pemmeve Dlackich brown: ....,..0...... H. longicaudatus 372 
c.’ Above mixed dusky, brown, and ochra- 
“os SOG: IO PP aa rn vere ae ra a H. repens 372 
BEERS VOUISIOV OTA 5 ico ye a Soke a vies ks H. goldmant 373 
e.’ Above grizzled with fulvous............ H. g. lepturus 373 
f.’ Above drab grizzled with black............ H. griseus 373 
g.’ Above black, mixed with ochre yellow...H. adspersus 373 
375. irroratus (Heteromys), Gray, Proc. Zodl. Soc., 1868, p. 205. 
La Parapa Spiny Rat. 
Type locality. La Parada, State of Oaxaca, Mexico. 
Geogr. Distr. State of Oaxaca, Mexico. 
Genl. Char. Tail short, hairy; lateral line present. 
Color. Upper parts grayish yellow, mixed with black; lips and 
under parts, inner side of legs, and feet white; faint lateral line pale 
fawn; tail beneath white. 
Measurements. Head and body, 118; tail, imperfect ? 106; 
hind foot and claws, 32.5. (ex mounted specimen in Brit. Mus. O. 
Thomas in litt.) 
376. bulleri (Heteromys), Thomas, Ann. Mag. Nat. Hist., 6th Ser., 
Ei cOO7, P. 330. 
*The arrangement of the members of HETEROMYs under its two subgenera 
Heteromys and Liomys cannot be satisfactorily accomplished, as the teeth of 
the adults in various instanees have no distinguishing characters; hence the 
present separation of the species and races in the keys given may be regarded 
only as tentative. 
