192 LABYKINTHODONTIA, 



The following specimens were obtained from the reputed 

 Permian of Texas. Purchased, 1885. 



R. 565. Fragment from the anterior extremity of the cranium, 

 showing the broken bases of three large teeth. This and 

 the following specimens of teeth are referred to this species 

 on account of their large size. 



R. 570. Two fragments of the cranium, each with the base of a 

 large tooth. 



R. 570 a. Fragment of a mandibular ramus. This specimen shows 

 the broken bases of three very large and some smaller 

 teeth, internally to which the summit of the inner surface 

 of the bone carries a number of minute knob-like den- 

 ticules. It seems to have belonged to the same individual 

 as No. E. 565. 



Eryops mcgacephalus— -Left lateral aspect of two trunk-vertebrae ; from the 

 reputed Permian of Texas. |. s, neural spine ; pr.z, prezygapopkysis ; 

 pt.z, postzygapophysis ; pi, pleurocentrum : i, inter centrum. 



R. 570 b. Part of a mandibular ramus, which appears to be from 

 the posterior region of the same jaw as that to which the 

 preceding specimen belonged. The inner part is wanting. 



R. 570 C. Fragment of a mandibular ramus with nine imperfect 

 teeth. This specimen, in which the inner lamina is 

 wanting, may have belonged to the opposite side of the 

 jaw to which the two preceding specimens pertained. 



