178 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
Under parts: pale Isabella color to dull white ; large irregular white 
markings under chin, on under side of legs and arms, on belly and 
along lower sides; hands, feet, and tail nearly naked, the scant hairs 
whitish. 
* Cranial characters. Skull similar to that of G. floridanus 
typicus , but slightly narrower with less spread to zygoma, and with 
rather shorter straighter rostrum. 
Measurements. The type $ adult: total length, 308.5 ; tail ver¬ 
tebrae, 93 ; hind foot, 36.8. An adult 9 from Tarpon Springs, No. 
69,473, coll. U. "S. dep. agric.: total length, 251.5; tail vertebrae, 
78.8; hind foot, 31.8. 
Remarks. G. floridanus austrinus is the form Dr. Merriam 
referred to when he said under G. floridanus , “specimens from 
further south on the peninsula are somewhat different.” Dr. 
Merriam has told me that he came very near giving the form a 
name, which it certainlv deserves. G. austrinus has an extensive 
range covering the western part of the Florida peninsula. All 
through central Florida, where salamanders are so very numerous, 
an intermediate form between G. floridanus typicus and G. aus¬ 
trinus occurs. Specimens from Orlando and Gainesville are very 
good intermediates. G. floridanus typicus occupies the eastern side 
of the peninsula and G. floridanus austrinus the Gulf side. 
G. austrinus can always be distinguished from G. floridanus 
typicus by its different coloring, being paler and redder above and 
much more extensively marked with wdiite below'. 
Geomys colonus sp. nov. 
Type from St. Mary’s, Georgia, $ old adult, No. 5,001, collec¬ 
tion of E. A. and O. Bangs. Collected, March 21, 1896, by O. 
Bangs. 
Genercd characters. Size of G. tuza ; color much darker (being 
darker than G. floridanus and even darker than G. mobilensis ). 
Skull different. 
Color. Upper parts betw r een seal-brow r n and sepia, slightly 
washed along lower sides with russet and cinnamon; under parts: 
hairs plumbeous at base tipped with cinnamon, shading into fawn 
color about vent; no wdiite marking under chin; hairs of feet, hands, 
and about wrists whitish. 
