234 — Bulletin American Museum of Natural History. [Vol. XXXIV, 
abdomen, lateral edges grayish, forming sometimes an ill-defined gray 
lateral line; chin and throat dull buffy gray; fore limbs entirely dark gray, 
the tips of the hairs lighter (whitish or buffy in different specimens); hind 
limbs externally like the body, internally gray like the fore limbs; ears 
colored like the adjoining surface, with a small patch of soft fulvous hairs 
at the posterior base; tail above washed with pale ochraceous, the general 
effect grizzled ochraceous and black, with a broad subterminal band of 
black, but base concolor with the back; under surface of the tail similar to 
the upper, broadly edged with ochraceous. 
“Total length [type] (collector’s measurements), 402; head and body, 
219; tail vertebree, 183; hind foot, 55. Type and 3 topotypes, total length, 
394 (377-411); head and body, 213 (188-225); tail vertebrae, 181 (162-192); 
hind foot, 56 (55-58). 
“Skull [type] total length, 51; zygomatic breadth, 31; interorbital 
breacth, 16; breadth of braincase, 22.7; length of nasals, 15.5; maxillary 
toothrow, 8. Four skulls (type and 3 topotypes, all adult), total length, 
51.2 (50.38-53); zygomatic breadth, 30.6 (30-31); interorbital breadth, 16.1 
(15-17); breadth of braincase, 22.7 (22-23.2); length of nasals, 15.5 (15- 
16); maxillary toothrow, 8.2 (8-8.6).’’ — Allen (1. ¢.). 
Specomens examined, 5.— palomitas Buenavista, 4; Andalusia, 1 (all 
Am. Mus.). 
“The distinctive feature of M. griseimembra is the entirely gray fore 
limbs and the gray inner surface of the hind limbs, in which it differs strik- 
ingly from any of the forms of M. hof'manni. In general coloration some 
specimens closely approach true hof'manni, but the underparts average 
much paler, and the tail is paler and less heavily washed with ochraceous. 
It differs still more in coloration from hyporrhodus, specimens of which have 
been received from nearby localities in the Bogoté district to the northward 
it is also smaller, the skull especially being smaller and more delicate. It 
is very much smaller than quindianus of the Central Andes (the skull 3 mm. 
shorter, and all other cranial measurements in ee and widely 
different in coloration. 
Remarks. — “The four specimens of the type series vary considerably 
in the coloration of the underparts, ranging from a strong wash of ochra- 
ceous yellow (in one specimen) to a slighter wash of ochraceous buff. The 
single specimen from Andalucia is the palest of the five, and the gray of the 
limbs is the deepest and strongest, probably indicating that the extreme 
phase of the species may be looked for to the southward of the type locality.”’ 
Aen ie). 
