Description of a New Plesiosaur. 313 



middle line probably with the anterior ends of the pterygoids, though 

 this is not quite clear. 



The premaxilloB (pmx.} which form the narrow muzzle, each 

 bear alveoli for five teeth. Of these the anterior one is small and 

 close to the middle line ; the second is rather larger ; both these 

 teeth seem to have been directed forward. The third and fourth 

 teeth are large, the fifth again smaller. Immediately behind the 

 last there is a short diastema crossed by the maxillo-premaxillary 

 suture. Within the row of alveoli and separated from them by a 

 flattened area there is a row of pits which mark the points at 



Internal to the two posterior 



Owing to a regrettable printer's error a line has been misplaced 

 in Dr. C. W. Andrews' paper, Annals S. Afr. Museum, Vol. VII. Part 4. 



The top line of p. 312 should be the top line of p. 310, 

 and the sentence to which it belongs should read:- 



The parts preserved are-skull, part of the mandible, some teeth, 

 about twenty cervical and fifteen dorsal vertebrae, some imperfect 

 limb bones, including portions of the femora, tibiae, fibulae, &c. 



be seen, however, that the first tooth was small, wnne uie suc- 

 ceeding three were greatly enlarged, the third being the largest. 

 The palatine portion of the bone is in contact with the premaxilla 

 in front ; behind this it forms the outer border of the internal nares ; 

 behind this again it joins the palatine for some distance, but pos- 

 teriorly is separated from it by the narrow sub-orbital vacuity (s.o.v.). 

 Behind this it unites with the transverse bone and posteriorly prob- 

 ably with the jugal. The facial surface is imperfectly preserved : 

 the maxillo-premaxillary suture runs from the alveolar border 

 upwards and backwards, then backwards nearly parallel with the 

 middle line as far as the external nares which form deep notches 

 in the border of the bones, their inner edge being formed by the facial 

 processes of the premaxillse. The relations of the facial region of 



