I 
BANGS: LAND MAMMALS OF FLORIDA AND GEORGIA. 179 
Cranial characters. The skull of G. colonies differs from that 
of either tuza or floridanus in having a very wide palate, between 
molar-form teeth and a wide round palatal notch. The nasals are 
short and strap shaped, not hour-glass shaped (as in tuza). The 
audital bullae are larger (nearly as large as in floridanus). The 
interparietal is notched, much as in mobilensis. Like tuza the old 
males usually do not develop a sagittal crest, and the ascending 
branches of premaxilla are narrow. 
Geomys colonus. Geomys eolonus. Geomys tuza. 
Type, J adult. Type , $ adult. $ old adult. 
Measurements. The type, $ old adult: total length, 280; tail 
vertebrae, 89; hind foot, 34. No. 5,002, $ old adult: total length, 
288; tail vertebrae, 100; hind foot, 36. Average of six adult 
females: total length, 250.33 ; tail vertebrae, 77.83; hind foot, 31.75. 
General remarks. When I was at St. Mary’s, Georgia, in the 
sjn'ing of 1896,1 trapped ten Geomys on the Arnot Plantation, about 
four miles west of the city. The colony from which I took these 
extends for many miles through the pine woods, probably reaching 
north to the Satilla River. This series shows a form very different 
from either G. tuza or G. floridanus and in no way intermediate 
between them, although, occupying the southeastern corner of 
Georgia, it lies geographically directly between the ranges of these 
two species. It is in all probability an isolated, colonial species with 
a very restricted range. At Rose Bluff, on the opposite side of the 
