BOTHRKMYDID^. 



119 



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) 



FlGS. 117119. Taphrosphys molops. 



117. Hinder half of plastron seen from below. Xj- No. 1474 A. M. N. H. Known bones inclosed by solid lines. 



118. Upper surface of left xiphiplastron. Xi- No. 1474 A. M. N. H. Shows ischiadic and pubic articulations. 



119. Three neural bones. Xj. 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 is now 

 No. 1 1 29 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, for 

 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 



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



FIG. ^.-Taphrosphys molops. l>or- -hat eroded ridge and elongated pit for the , inguinal 

 tions of seventh and eighth costal buttress. The latter is 10 mm. wide. The pub, sea. is 

 bones and part of suprapygal. No. 53 mm - long and 15 mm. wide, elevated and rough. 

 1477 A. M. N. H. pubic scar is circular. 



