264 THE BATH OOLITE PERIOD. CHAP, 



v 



\ 



In this fine series, probably indicating fifteen or more posterior 

 caudals, the articulating surfaces are nearly circular, and nearly 

 of equal concavity ; the body is contracted round the middle, so as 

 to become hour-glass shaped ; the space covered by the neural arch 

 is about half the whole length (two cases are exceptional), the 

 posterior uncovered part being usually much the largest. In 

 No. 10 the body is distinctly arched. 



Three of the vertebrae presented by Mr. Neate, from the same 

 neighbourhood, have lateral apophyses, and must be regarded as 

 of the anterior half of the tail. The largest has the two articular 

 faces nearly equally concave; the bases of the lateral apophyses 

 much extended horizontally. The others have these bases nearly 

 round, and more elevated on the corpus. 



The dimensions of these vertebrae are given below in inches. 



i I i N 



g I g 3 8 8 



8- J-a. 







ll! 1 



I !i I I 



NO. I . . . 5'0 7'4 6'5 22-0 0'5 3'6 I'5 



Interval unknown. 



2 .... 5-1 6-5 6-1 177 07 2-8 1-5 



3 ... . 5'8 6-4 5-8 19-0 07 2-6 1-5 



The vertebrae from Glympton, all posterior caudals, have both faces 

 in some degree concave (less so than in the Chapelhouse series) ; the 

 posterior most concave; the anterior largest. The neural arch is nearer 



to the anterior face. The following are their dimensions in inches : 



^ ^ P 15 "a f i 



s 's .g 



t-5 UTS -3 



i I ll I 1 i 



3 pq W SM < * (S 



a. . . . . - . 6-3 4-8 5-1 .. ro 3'5 i'7 



6 ...... 6-45 4-4 4'9 ro 3' 6 r8 



Interval. 



c. . . . . . Frustum of anterior part. 



d ...... Frustum of anterior part. 



Three intervals. 



e. . . . Frustum. 



/. ..... Frustum of posterior part. 



g ...... 6-1 2-9 3-0 .. 07 37 1-5 



h ...... 5-85 2-95 2-7 .. 0-8 3-6 1-4 



* ...... 57 2-65 2-5 .. o7 3'6 i'3 



