188 



SATJEOPTERTGIA. 



Cimoliosaurus tenuis (Hector x ). 



Syn. Polycotylus tenuis, Hector 2 . 



Very imperfectly known, being founded upon cervical vertebrae 

 and the following specimen; it probably belongs to the present 

 group, as the vertebrae are deeply cupped. 



Hah. New Zealand. 



It. 838. An imperfect propodial bone (? humerus); from the Cre- 

 {Fig.) taceous of Amuri Bluff, North Island, New Zealand. 

 One of the type specimens ; figured by Hector in the 

 ' Trans. N. Zealand Inst.' vol. vi. pi. xxvii. fig. B. 



By exchange iviih the Wellington Museum, 1880. 



Cimoliosaurus valdensis, Lydekker (n. sp.). 



Of very small size. Both the cervicals and dorsals very short ; 

 the terminal faces of the former less deeply cupped than in 0. 

 bernardi, and those of the latter without a mammilla in the centra ; 

 arches of cervical vertebrae with the oblique zygapophysial ridge 

 indistinct. 



Fig. 61. 



Cimoliosaurus valdensis. — Anterior and left lateral aspects of a cervical vertebra ; 

 from the Wealden of Hastings, f . pr.z, prezygapophysis ; pt.z, postzy- 

 gapophysis ; co, costal facet. 



The small dimensions of this species, coupled with the freshwater 

 character of the beds in which it occurs, indicate the probability of 



1 Trans. N. Zealand Inst. vol. vi. p. 345 (1874). 2 Loc. cit. 



