Hxcron.—On. the Fossil Reptilia 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 
vertebre 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 procelian, 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 аге 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 vertebre 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 procelian form 
of the centra. The inferior surface 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 10d. 
No. 10 g.—Jaws and teeth of a fine specimen, collected by Dr. Haast at 
the Amuri Bluff, 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 series exposed, but in 
а very broken and displaced condition. "The jaws appear to be curved and set 
ata wide angle, resembling the figure of JMosasaurus ; 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 4. —In the Canterbury Museum are several vertebrz from Waipara, 
which agree with the characters attributed above to Leiodon, and probably the 
T'eleosaurus, 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 vertebrz, a skull, and paddle bones 
from the Amuri Bluff, whieb, though occurring in three separate portions, 
have been identified as belonging to the same species. The dorsal vertebr:e, 
of which seven are preserved, are procelian, and characterized by their bodies 
having a greater anterior than posterior diameter, the eup end having a 
much greater diameter than the ball which it receives. The plane of each 
c2 
