/O FLORIDA GEOLOGICAL SURVEY-EIGHTH ANNUAL REPORT. 
eleventh peripherals of the left side, Nos. 4418 and 5485. which, 
while differing slightly from each other, preserve the essential 
characters of the species. 
At Vero was obtained a right sixth costal bone which is re¬ 
ferred to T. sculpt a. The sculpture of the surface is identical with 
that shown by figure 9, plate LIV, of the writer’s Fossil Turtles 
of N. A. 
TRACHEMYS EUGLYPHA (LEIDY) ? 
Plate 4, fig. 6. 
From Ellenton Dr. Sellards has sent a portion of a nuchal bone 
which has the number 5775 and which it seems must be referred to 
Leidy’s species named above. Most of the bone is missing behind 
the sulcus which runs between the first marginals and the first 
vertebral. Although differing in some respects from the type de¬ 
scribed and figured by Leidy (Trans. Wagner Inst., Vol. II, p. 27, 
pi. IV, fig. 1) it possesses many of the striking characters of that 
type specimen. It is extremely thick, 21 mm., at the suture with 
the first peripheral of each side. Just behind, at the rear of the 
nuchal scute, the thickness is 18 mm. The upper surface is 
strongly sculptured. The sulci form deep and sharp cuts. The 
nuchal scute area is 26 mm. long and 9 mm. wide. It ends in front 
in a sharp point, instead of being obtuse as in the type. 
While the sculpture of the upper surface resembles somewhat 
that of T. sculpt a the bone differs in being much thicker. 
The type was found in Peace Creek deposits, which formerly 
supposed to belong to the Pliocene are now regarded by Dr. Sel¬ 
lards as undoubtedly Pleistocene. 
TRACHEMYS? NUCHOCARINATA, NEW SPECIES. 
Plate 6, fig. 5. 
Type-specimen .—The anterior portion of a nuchal bone, No. 
4437 of the collection of the Florida Geological Survey. 
Type-locality and formation ,—Florida Coast Line Canal, 20 
miles north of St. Augustine. Pleistocene. 
Diagnosis .—Nuchal bone furnished with a strongly developed 
median keel. 
The portion of a nuchal bone which is taken as the type of this 
species lacks the hinder part, but it is so peculiar that it can hardly 
be confused with any other nuchal. 
The length cannot be determined, but it was cpute certainly 
