189G.] J--'^ [Cope. 



externally, while the three principal elements of the other leg lie on the 

 interior side of the carapace. Both legs are extended in the same direc- 

 tion, i. e., forwards. 



The shaft of the femur has a triangnlar section, the external face con- 

 cave owing to the prominence of the anterior crest. The external con- 

 dyle is produced further posteriorly than the internal, and is a continu- 

 ation of the general distal surface and is not reflected on the posterior 

 face as in so many of the Pelycosauria. The anterior fiice is flat above 

 and shallowly concave at the condylar border below. Tlie head of the 

 tibia is expanded and the shaft narrowed, as in Pelycosauria. It is 

 straight, while the flbula presents towards it a concave outline ; and the 

 two extremities of the latter are about equally expanded. 



The surfaces of the vertebral centra are slightly concave anteroposte- 

 riorly. The intercentra are somewhat swollen and knob-like on the in- 

 ferior face. It is probable that the ribs are less closely adherent to the 

 carapacial bars posteriorly than anteriorly. As already remarked, ante- 

 riorly the ribs emerge between the bars to form part of the surface ; 

 medially the ribs are below the bars but touch them. Further poste- 

 riorly a cross section displays a rib which does not touch a bar, except 

 perhaps at the extremity, as the curvature would indicate ; but this part 

 is broken off. The superior surfaces of the carapacial elements are of 

 dense bone marked with coarse and fine fossae and intervening ele- 

 vations irregularly distributed. 



Tlie size of this animal is about that of the adult of the larger Japanese 

 salamander, Megalobatrachus. 



Measurements. 



MM. 



Width of skull between meatus auditorius To 



" " " " orbits ol 



" " " " orbit and meatus 15 



• • orbit, transversely 27 



Length of skull above posterior to orl)its fio 



Depth of malar bone at middle of orbit 13 



" "mandible " " " " 14 



Length of tooth exterior to alveolus o 



" " clavicle (chord) 78 



/ liroximal 22 



Widths of clavicle •■ median 4 



^distal 21 



m Til ^ head 35 



Transverse diameters humerus •' 



( shatt o 



Length of femur C)7 



. ^ , • T * ce ^ proximally 23 



Anteroposterior diameter ot temur -] \. 



^ i distally 20 



Length of tibia 51 



