Hector.— 0« the Fossil Rejitilia of New Zealand. 353 



vertebra of the string has its centrum 2 inches in diameter. There is, 

 however, one detached vertebra of minute size, the centrum being only 

 •75 inch, which would apparently indicate that the diameter of the caudal 

 vertebrae either diminished suddenly, or that the number must have been very 

 great. The length of the centrum is 1-5 to 1-2 inches, while that of the 

 single small vertebra is only "5 inch. 



They are all proccelian, quadrilateral in section, with a small triangular 

 neural canal, enclosed by a stout spinous process 3 inches in height by 1 in 

 width. 



The chevron bones are 5-5 inches in length, the bifurcate processes 1-5, 

 articulating with facets on the lower aspect of the centra, and obliquely 

 directed backwards, in the same way as the first of the series of chevron 

 bones in the Tuatara. 



No. 10 c. — Eight vertebrae from another slab, also from the Amuri Bluff, 

 probably from the cervical portion of the column. They are connected with 

 the foregoing, from the striated character of the spines and the proccelian form 

 of the centra. The inferior sui-face of one is well preserved, and shows a 

 width between the insertion of the lateral processes of 1-7 inches, or about the 

 same as that of the anterior articulations. The excavation on the inferior 

 surface of the centrum, beneath the lateral process, corresponds closely with 

 that observed in 10 J. 



No. 10 g. — Jaws and teeth of a fine specimen, collected by Dr. Haast at 

 the Amuri Blufi^, but still imbedded in the blocks of matrix, appear to belong 

 to this species. 



No. 10 h. — -Lower jaws of both sides, with the tooth sei-ies exposed, but in 

 a veiy broken and displaced condition. The jaws appear to be curved and set 

 at a wide angle, resembling the figure of Mosasaurus ; but the form of the 

 teeth and the other characters place the specimen with the narrow-muzzled 

 Leiodon, so that the apparent width of the mouth indicated in this specimen 

 must be attributed to dislocation. 



No. 10 1. — In the Canterbury Museum are several vertebrae from Waipara, 

 which agree with the characters attributed above to Leiodon, and probably the 

 Teleosaurus, mentioned by Mr Hood as having been sent home in the Matoaka, 

 is to be referred to this genus. 



11. Taniwhasaurus oweni, n. sp. 



I have applied this term to a mass of vertebrae, a skull, and paddle bones 

 from the Amuri Blufi", which, though occvirring in three separate portions, 

 have been identified as belonging to the same species. The dorsal vertebi-ae, 

 of which seven are preserved, are proccelian, and characterized by their bodies 

 having a greater anterior than posterior diameter, the cup end having a 

 much greater diameter than the ball which it receives. The plane of each 



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