I BRITISH ASSOCIATION MEETING. 445 
I regard the above described parts of tlie New Zealand fossils as being homo- 
il logous bones. But a more decided evidence of the plesiosaurian nature of this 
I antipodeal fossil is afforded by the vertebral centrums. They have flat arti- 
cular ends, with two large ana two small venous foramina beneath. The neura- 
I pophysial surfaces, showing the persistent independence of the neural arch, 
. are separated from the costal surfaces by about half the diameter of the latter. 
; These are of a fuU oval figure, one inch three lines in vertical, and one inch in 
1 fore and aft diameter. On one side of one of the centrums the rib has coalesced 
\ with the costal surface. The following are dimensions of this centrum : — 
\ Length, one inch nine lines ; depth, two inches two lines ; breadth of articular 
end, three inches six lines. The non-articular part of the centrum offers a fine 
silky character. The shape and mode of articulation of the cervical and dorsal 
ribs, the shape and proportions of the coracoids, concur with the more decisive 
evidence of the vertebrse in attesting the plesiosauroid character of these New 
Zealand fossils, and, pending the discovery of the teeth, the author provi- 
sionally referred them to a species for which he proposed the name of Plesio- 
saurus AustraUs. The specimens had been presented by Mr. Hood to the 
British Museum. 
ON THE GEOLOGY OF KNOCKSHIGOWNA OR FAIRY HILL, CO. 
TIPPEllARY, IRELAND. 
By a. B. Wynne, F.G.S. 
In this paper the author described Knockshigowna as a conspicuous hill, 
rising to a height of 701 feet above the level of the sea, and 400 above the 
average level of the surrounding hmestone plain, and being situated at a dis- 
stance of six miles S.S.W. of Parsonstown, wnich is well known on account of 
Knockshigowna Hill— from the West. 
beino-the place where Lord Rosse has erected his great telescopes. The hill 
is a narrow ridge about three miles long, in a S.S.W. direction ; its base in- 
creasing in width towards the S., at which end its most elevated point occurs. 
