BANGS : LAND MAMMALS OF FLORIDA AND GEORGIA. 189 
bony ridge of outside frontals is much larger and more conspicuous, 
even in the young, than in 0 . palustris typicus ; the nasals and ros¬ 
trum are longer and the brain case proportionately narrower, giving 
the skull a long, narrow, and less rounded appearance ; audital bullae 
are larger, deeper, and less flattened than in 0 . palustris typicus. 
These cranial characters, though marked in the extreme forms, 
intergrade, as do the external characters. 
Chapman’s rice-field mouse is a common animal, living for the 
most part in both fresh and salt marshes, and in swamps, though 
often found in drier situations. 
I have specimens from Anastasia Island, Carterville, Gainesville, 
Enterprise, Oak Lodge, and Crystal River, Florida. 
Oryzomys palustris coloratus 1 subsp. nov. 
Type from Cape Sable, Florida, $ adult, No. 4,470, collection of 
E. A. and O. Bangs. Collected, April 17, 1895, by C. L. Brownell. 
General characters. Size larger than 0. palustris natatory tail 
large and coarse; color about a lively reddish brown. 
Color. Upper parts, rich reddish brown, about between hazel 
and j ferruginous, most intense on rump and somewhat paler and 
yellower on sides and cheeks; a thick sprinkling of brownish black 
hairs along back and on head; under parts, white, often suffused 
with cinnamon, the hairs plumbeous at base ; tail bicolored towards 
base, unicolor towards tip, dusky, dull whitish below towards base; 
feet and hands whitish; ears reddish brown inside, more dusky 
outside. 
Cranial characters. Skull similar to that of O. palustris 
natator , but slightly larger. 
Measurements. The type $ adult: total length, 301.6; tail ver¬ 
tebrae, 150 ; hind foot, 35. Average of three adult $ ’s from Cape 
Sable: total length, 301.06; tail vertebrae, 148.2; hind foot, 34.93. 
Average of six adults, males and females, from Flamingo, Florida: 
total length, 303.86; tail vertebrae, 152.5; hind foot, 34.7. The 
largest example in above averages is No. 4,460, $ old adult from 
Flamingo, Florida, total length, 309.8; tail vertebrae 160.4; hind 
foot, 33.4. 
General remarks. In March and April, 1895, Mr. C. L. 
Brownell collected eleven specimens of this large, highly colored 
1 Coloratus = imbrowned. 
