BOTHREMYDID&. 1p) (0) 
both measured at the midline. Neither hypoplastron exhibits either the inguinal region or the 
border for the mesoplastron. 
The hyoplastron overlapt somewhat the hypoplastron, and the latter similarly overlapt 
the xiphiplastron. At the antero-interior angle the hypoplastra are 16 mm. thick; at the 
postero-interior angle, 8 mm. The whole free border of the hinder lobe is acute. The hinder 
notch is 135 mm. wide. and 42 mm. deep. On the upper surface of the xiphiplastron (fig. 118) 
——— 
Fics. 8 119.—T aphros phys molops. 
117. Hinder half of plastron seen from below. 4. No. 1474 A.M.N.H. Known bones inclosed by solid lines. 
118. Upper surface of left xiphiplastron. ><}. No. 1474 A. M.N.H. Shows ischiadic and pubic articulations. 
119. Three neural bones. 4. No. 1470 A.M.N.H. 
are seen the circular scar for the ischium and the elongated one for the pubis. Both are elevated 
and furnisht with sharp ridges. 
The inferior surface of this part of the plastron is rough, due partly at least to erosion. 
The abdominal scutes occupy about the anterior 30 mm. of the hypoplastra. The femorals 
are large, measuring about 135 mm. along the midline; the anals, 75 mm. 
The specimen of this species mentioned by Cope as having come from Birmingham ts now 
No. 1129 of the American Museum. The femur supposed by Cope to belong with the specimen 
is missing. The remaining fragments throw no light on the species. 
No. 1470 of the American Museum is labeled by 
Cope as having been received by him ‘9/8, 1870,” and 
was therefore not mentioned in his monograph. It was 
secured at Barnesboro. The individual was somewhat 
larger than the type. The nuchal bone has a length of 
107 mm., a width anteriorly of 64 mm., and a maximum 
width of 117 mm. The notch in the midline behind, tor 
the first neural, is only 24 mm. wide. Three neural 
bones (fig. 119) accompany the lot, but the exact position 
of none of them can be determined. None shows a cross- 
ing sulcus, and yet two of them were in contact. Figures 
of these are presented. 
The right first costal shows a great pit for the axillary 
oo buttress. A fragment of the right fifth presents the some- 
what eroded ridge and elongated pit for the inguinal 
The latter is 10 mm. wide. The pubic scar is 
Fic. 120.—T aphros phys molops. Por- 
tions of seventh and eighth costal buttress. ! : 
bones and part of suprapygal. No. 53 mm. long and 15 mm. wide, elevated and rough. I he 
1477 A. M.N.H. pubic sear is circular. 
