58 FLORIDA GEOLOGICAL SURVEY-EIGHTH ANNUAL REPORT. 
pace is represented. This keel lies considerably above the upper 
edge of the lateral hinge line. 
On the areas of the second, third and fourth vertebral scutes, 
on each side of the midline, there is a deep impression whose sur¬ 
face is irregular. There is left between the two' impressions a 
conspicuous median keel; while outside of each impression, there is 
left a ridge. There appear, therefore, to be a median and right 
and left keels. The whole surface of the carapace is more or less 
undulating. 
The sulci which separate the various scutes, especially the cos- 
tals and the vertebrals, are narrow and deeply impressed. The 
vertebral scutes are of moderate width. The following are the di¬ 
mensions : 
Measurements of vertebral scutes in millimeters. 
Scute 
Length 
Width 
2 
34 
39 
3 
35 
43 
4 
40 
37 
5 
20 
38 
The height of the supracaudals is 13 mm.; that of the tenth 
marginal scute, 16 mm.; that of the eighth, 20 mm. 
TERRAPENE ANTIPEX, NEW SPECIES. 
Plate 4, figs. 4, 5. Plate 5 , figs. 1-5. 
Type-specimen .—A hinder lobe of the plastron, No. 5460 of 
the Florida Geological Survey. 
Type-locality and formation. —Vero, St. Lucie County, Flor¬ 
ida. Pleistocene. 
Diagnosis .—Size large, the plastron attaining a length of 220 
mm. or more; of medium breadth; shell thick and heavy; carapace 
with its free borders curved upwards, keel over the bridges; free 
surfaces mostly uneven. 
From Vero Dr. Sellards has sent many fragments of a large 
box-tortoise which appears to have been hitherto undescribed and 
to which is given the name Terrapene antipex. The type is a 
hinder lobe, No. 5460 (pi. 5, fig. 1), in which all the bones are 
consolidated into one mass. The course of the hypoxiphiplastral 
suture is barely distinguishable. The under surface is concave, 
