On a Neiv Cynodont Beptile 377 



apparently formed by the premaxillaries. In front of the large 

 canines are two deep depressions for the lodgment of the lower 

 canines. The region of the anterior palatine foramina is not 

 well preserved. The secondary palate ends on the plane of the 

 sixth molar. 



The dentition of the upper jaw is fairly well shown, though the 

 crowns of none of the teeth can be seen. There are five incisors, 

 the first four being subequal and the fifth -small. The five measure 

 9 mm. Six mm. behind the fifth incisor is the canine, which 

 measures about 4 mm. x 3 mm. Following the canine are eight 

 molars and premolars, all of relatively small size but increasing in 

 size on passing backwards. The whole series measures 20 mm. 

 Though not well preserved the teeth are evidently somewhat, 

 similar to those of Trirachodon, being broader than long. 



A part of the brain case is preserved. The cerebrum is fairly 

 large, and the cerebellum small. The mid-brain is also rather 

 feebly developed. It is too imperfect, however, to enable one to 

 say inuch of its affinities. 



The vertebrae are very imperfect. The atlas is large, and the two 

 halves of the arch apparently unanchylosed. The details of the later 

 vertebrae cannot be made out satisfactorily. There are probably 

 seven cervical vertebrae which measure about 65 mm. The 

 following vertebra which is probably first dorsal has a long rib. 

 ,; From the impressions and remains of the bones of the shoulder 

 girdle the size and shape of both scapula and precoracoid can be 

 made out, but there is no trace of the coracoid seen. The scapula 

 measures about 56 mm. in length and it is probably similar in 

 structure to that of Cynognathus. Ventrally it has a broad arti- 

 culation with the precoracoid, which is large and flat and has a 

 large rounded foramen. 



The humerus is badly preserved but is possibly similar to that of 

 Gomphogriathus. It measures 20 mm. across the proximal end 

 as preserved. The radius and ulna are badly preserved. They 

 possibly measure about 50 mm. in length. 



The carpus, though crushed on both sides, can be restored 

 with some degree of probability. Carpalia 1, 2, 3, and 4, are 

 well preserved. Above carpale 2 is a small element which 

 I regard as centrale 1, and above carpale 2 is a larger element 

 whicti is probably centrale 2. There is certainly a large radiale 

 and large ulnare, and probably there is a fair-sized intermedium 

 between. The bones of the proximal row are displaced in the 

 right maims and imperfect in the left. I have given a restoration of 

 what I believe to be the probable arrangement. 



