TESTUDINATA. 
47 
gopher of Florida. The width at the front of the bone is 60 mm.; 
the length along the midline, 38 mm. From a line at right angles 
with the midline and proceeding from the front of the notch the 
lateral processes extended backward 29 mm. 1 his is, therefore, 
the depth of the notch. Its width behind was 60 mm. At the inner 
front angle of the bone the thickness is 8 mm. This increases rap¬ 
idly, especially near the outer border, where the thickness is 20 mm. 
From the top of the ridge thus formed the outer border descends 
steeply. At the furrow between the femoral and the anal scutes 
the border is acute and the wall slopes less steeply and has a 
height of 11 mm. The terminal process is triangular. Its lower 
face is convex. On its upper surface a sharp ridge runs from its 
base to its apex. From the summit of the ridge the surface slopes 
in each direction to the free borders of the process. The greatest 
thickness at the base is 12.5 mm. The area for the anal scute is 
43 mm. wide, 39 mm. along the outer border and 8 mm. at the 
midline. This scute differed from that of the existing gopher 
(Gopherus polyphemus ) in being much shorter at its median end. 
With this xiphiplastral are associated provisionally the fol¬ 
lowing specimens found at Ocala: A left seventh peripheral and 
a part of an eighth, No. 4286; a right seventh peripheral, No. 4297; 
a hinder right peripheral, No. 4305; a part of a left sixth costal, 
No. 4295 ; and a part of a bridge peripheral of the left side. The 
peripherals are remarkable because of their lack of curvature from 
the upper to the free border. As the xiphiplastral bone is sug¬ 
gestive of relationship with Gopherus polyphemus , so too are the 
peripherals. However, these peripherals are in one way quite dif¬ 
ferent from those of the existing land tortoise oil Florida. In this 
species the free border is prolonged somewhat where crossed by 
the intermarginal furrows; while in the peripherals here assigned 
to T. incisa the border is there notched. In both species the border 
is scalloped, but in T. incisa the notches are in the peripherals; 
in Gopherus polyphemus, between them. 
The height of the left seventh peripheral, taken in front, is 
75 mm.; taken behind, 65 mm. The thickness at the front and 
near the upper end is 8 mm. As will be seen from the illustration 
(pi. 3, fig. 6), the lower border is notched, where crossed by the 
intermarginal furrow. This indicates that the hinder free border 
of the carapace was scalloped. The furrow just mentioned, as it 
ascends, comes nearer and nearer to the front border of the bone. 
