BOTHREMYDID&. 123 
Henry B. Kimmel. These bones had lain for many years in the basement of the capitol and 
all knowledge of their origin had been lost. Without doubt, they had been obtained from the 
Upper Cretaceous ereensand of New Jersey. 
Of this individual there are large portions preserved, but there are so many parts missing 
that the shell can be only partially restored. Of the carapace there were sec ured a considerable 
part of the anterior and posterior free borders and some fragments of costals. Of the plastron 
some important parts can be identified. The individual is estimated to have had a carapace 
about 700 mm. long. 
Most of the nuchal bone is present (fig. 125), but, on account of the absence of a section of 
it, its exact width can not be determined. It was not far from 120 mm. The hinder portion is 
missing. The thickness near the midline in front is 13 mm.; backward the bone thins to 
6 mm., while at its outer ends it is 18 mm. thick. The whole free edge is obtuse. The first 
peripheral (fig. 125) has a length along the free border of 83 mm., a fore-and-aft extent of 
65mm. The thickness at the suture with the second peripheral is 24 mm.; at the suture 
with the first costal,8 mm. The second peripheral (fg. 125) extends go mm. along the free 
border; 70mm. fore and aft; and is 26 mm. thick where it joined the third. Its hinder 
border somewhat overlapt the first costal. 
Fics. 125-130.—A mblypeza entellus. Portions of the type in State collection of New Jersey. 
125. Nuchal and anterior peripherals of type. }. 127. Section along intermarginal sulcus of peripheral 
nu. p, nuchal plate; mu.s, nuchal scute; per. 1, of fig. 126. Xt. 
first peripheral. 128. Hinder peripheral. x}. 
126. Hinder peripherals (7 ? and 8 ?)of left side of type. x}. 129. Section of peripheral of fig. 128. x}. 
130. Inner surface of fifth costal. x4. Shows surface for inguinal buttress. 
The peripherals behind the bridges were larger and thicker than those in front. One 
whole one and portions of two others are present. The free borders of these are thickened and 
very obtuse, thus contrasting strongly with the corresponding bones of T aphros ph: ys. The 
exact positions of these posterior peripherals can not be made out. Fig. 126 represents portions 
of two; and from the thickness of the bone at the left hand, 27 mm., and the height of the 
costo-marginal sulcus, that peripheral is believed to belong not far from the inguinal notch, 
being possibly the left eighth. Fig. 127 is a section taken along the intermarginal sulcus. The 
upper surface is convex in all directions. On the under side the horn-covered surface rose 
above the free border about 45 mm., descending somewhat backward. Fig. 128 represents a 
complete peripheral, probably the tenth of the right side; fig. 129 1s a section of the anterio1 
end. It measures 104 mm. along the free border aac is 104 mm. high. The thickness near the 
lower border is 21 mm.; at the upper border, 13 mm. On the v jeceral side the surface covered 
with horn is 40 mm. wide anteriorly, but toward the hinder end is only 15 mm. wide. The free 
border is very obtuse. 
A fragment of a costal has a length of 130 mm., a width of 77 mm., and a thickness of 
15 mm. at the sutural border, 20 mm. through the rib. Another freemen is part of the fifth 
