ISOTrIKI\lYI)ll>.r . 



S eithei the inguinal iiMjiiin iii the 



both measured at the midline. Neithei hypoplastron exhibit 

 border for the mesoplastron. 



The hyoplastron overlapt somewhat the hypoplastron, and the latter similarly overlapt 

 the xiphiplastron. \t the antero-interior angle the hypoplastic are 10 mm. thick; at the 

 postero-interior angle. 8 mm. The whole tree border of the hinder lobe is acute. The hinder 

 notch is 1^5 mm. wide, and 42 mm. deep. ( )n the upper surface of the xiphiplastron (fig. 1 iS 1 



FlGS. 117 119. Taphrosphys molops. 



11-. Hinder half of plastron seen from below. X 4. No. 1474 A. M. N. H. Known hones inclosed by solid lines. 



1 18. Upper surface of left liphiplastron. X \- No. 1474 A. M. N. H. Shows ischiadic and puhic articulations. 



119. Three neural bones. \ . No. 14^0 A. M. N.H. 



are seen the circular scar for the ischium and the elongated one for the pubis. Both are elevated 



and turnisht with sharp ridges. 



The interior surface ot this part ot the plastron is rough, due partlv at least to erosion. 

 The abdominal scutes occupy about the anterior 30 mm. of the hypoplastra. The femorals 



are large, measuring about 1 ^ mm. along the midline; the anals, 75 mm. 



The specimen of this species mentioned bv Cope as having come from Birmingham is now 



No. 1 1 2Q of the American Museum. The femur supposed bv Cope to belong with the specimen 



is missing. The remaining fragments throw no light on the species. 



Xo. 1470 of the American Museum is labeled by 

 Cope as having been received by him "98, 1870," and 

 was therefore not mentioned in his monograph. It was 

 secured at Barnesboro. The individual was somewhat 

 larger than the tvpe. The nuchal bone has a length of 

 107 mm., a width anteriorlv of 64 mm., and a maximum 

 width of 117 mm. The notch in the midline behind, for 

 the first neural, is only 24 mm. wide. Three neural 

 bones (fig. 1 ig ) accompany the lot, but the exact position 

 ot none ot them can be determined. None shows a cross- 

 ing sulcus, and vet two of them were in contact. Figures 

 ot these are presented. 



The right first costal shows a great pit for the axillarv 

 buttress. A fragment of the right fifth presents the some- 

 what eroded ridge and elongated pit for the inguinal 

 buttress. The latter is 10 mm. wide. The pubic scar is 

 53 mm. long and 15 mm. wide, elevated and rough. The 

 pubic scar is circular. 



/" 



Fig. 120. Taphrosphys molops. Por 

 tions ot seventh and eighth costa 

 bones and part of suprapygal 

 1477 V \I. N. II. 



No. 



