On a Neiv South African Stegocephalian (Phrynosuchus whaitsi). 7 



Behind the occiput are some crushed bones which may be parts 

 of the clavicles and interclavicles, and by the sides of the neck are 

 some small ossicles which may be the remains of gill arches. 



The body is long and salamander-like. The vertebrae are very 

 imperfectly ossified and represented by paired ossifications, probably 

 representing pleurocentra. The ribs are short as in the Branchio- 

 sauridae and almost straight. 



FIG. 1. Skull of Phrynosuchus whaitsi. Very slightly reduced. 



The shoulder girdle and clavicular apparatus are not well pre- 

 served, but the humerus, radius, and ulna of the right side are seen. 

 The humerus is a short bone with a moderately wide distal end. 

 The length is 16 mm. and the distal end is 9 mm. wide. The radius 

 is a slender rod 10 mm. in length and the ulna is rather stouter. 



Of the hind limb the only parts preserved are a portion of the 

 tibia, five metatarsals, and two phalanges. There are certainly five 

 digits, and the tarsus is unossified. 



There is a complete exoskeleton of thin, ossified scales. 



The type, which has been named after the Eev. J. H. Whaits, has 

 been placed in the South African Museum. 



